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Free sample · Productivity, from the June 2026 run. Subscribers get every category in every run as it lands, monthly or weekly. See plans →

◇ App Store OpportunitiesJune 2026

Where the next app actually wins.

13 indie-lens app ideas across 1 App Store categories and three storefronts, mined from June’s chart movement and live reviews. Every idea is scored for what a small team can win and monetize. Going head-to-head with a giant is penalized and flagged.

13Scored ideas
1Categories
2Prime · 75+
3Markets
JuneChart window
Score distributionmedian 66 · top 76
40526275100
75+ prime62–74 strong52–61 workable<52 long shot
Top 10 ideas to buildthe best overall bets for an indie dev in June 2026
13 / 13 ideas
CategoryProductivity
All categories

Productivity

13 shown · median 66 · 2 giant-guarded
Market snapshot: movers, entrants & grossing leaders across all three storefronts
🇺🇸 US
Movers

Chatbot AI Assistant - Genie 80→51 (+29); Mighty Cleaner: Clean up Space 79→63 (+16); Documents: File Manager & Docs 93→78 (+15); Office Word: Edit Document 87→73 (+14); TeraBox: 1TB Cloud & AI Space 56→43 (+13)

New entrants

#34 HarmoWave

Top grossing

ChatGPT · Claude by Anthropic · Grok - AI Assistant · Dropbox: Cloud File Storage

Churn

9 of top-100 rotate in per week

🇬🇧 UK
Movers

Chat Smith: AI Chatbot & Agent 90→60 (+30); Opal: Screen Time Control 69→46 (+23); Office Word: Edit Document 61→45 (+16); TeraBox: 1TB Cloud & AI Space 57→44 (+13); Translator GO: AI Translate 50→39 (+11)

New entrants

#15 Workcloud Shift; #22 HarmoWave; #31 EquateAccess

Top grossing

ChatGPT · Claude by Anthropic · Grok - AI Assistant · Dropbox: Cloud File Storage

Churn

8.8 of top-100 rotate in per week

🇹🇷 TR
Movers

Mighty Cleaner: Clean up Space 83→28 (+55); Teleprompter - VILO 93→52 (+41); TeraBox: 1TB Cloud & AI Space 66→33 (+33); Chat Smith: AI Chatbot & Agent 87→60 (+27); PDF Reader - OCR Scan Edit 35→13 (+22)

New entrants

#19 Kimi - Kimi K2.6 is Live

Top grossing

ChatGPT · Claude by Anthropic · Grok - AI Assistant · VPN - Super Unlimited Proxy ™

Churn

10 of top-100 rotate in per week

⚑ Review opportunities · 15where users are leaving the leader, and what a new app could take

_The TR trio (Claude, Perplexity, Gmail) is the most indie-actionable set this month: highest anger, lowest localization bar, weakest incumbent attention._

Claude by Anthropic (US) — 42 recent 1–2★ (42% of 100) · Top Grossing #2
  • Users hurting on: credits burned on failed/unwanted output (6, med) — "It's programmed to burn through credits"; launch-crash loop on the July build (5, high); bans with no explanation (3, med).
  • Asking for and NOT getting: account switching (2 requests), project-file viewing on iOS (1), read-only Cowork on mobile (1), working in-app search (1).
  • Your opening: a fading #2 whose paying users publicly count wasted tokens — any AI-workspace tool that shows exactly what each request will cost before it runs wins their trust by default.

cross-checked: kept 3, cut 0

Dropbox: Cloud File Storage (US) — 38 recent 1–2★ (38% of 100) · Top Grossing #4
  • Users hurting on: unauthorized charges and un-cancellable plans (6, med) — "Dropbox charged me around 180USD"; paywalls on viewing shared/own files (4, med); files deleted without consent (3, high).
  • Asking for and NOT getting: in-app delete/empty-trash (1), granular/wildcard search (1), fix photo downloads failing (1).
  • Your opening: a steady giant whose recent reviews are about billing trust, not features — simple honest storage/transfer with one cancel button undercuts it.

cross-checked: kept 3, cut 0 (single-user-plan claim removed; insufficient distinct evidence)

Speechify – Text to Speech (US) — 29 recent 1–2★ (58% of 50) · Top Grossing #7
  • Users hurting on: the scan-a-book ad promise vs page-by-page reality (12, high) — "the ad is an outright lie, in order to listen to a book you have to scan every page"; $140/yr price revealed after a signup quiz (9, high); free voices that "sound terrible" (2, med).
  • Asking for and NOT getting: diverse narrator voices (1), a monthly plan (implicit in 9 pricing complaints), continuous playlists (1).
  • Your opening: 58% of recent reviews are 1–2★ at a steady #7 — a TTS reader with honest onboarding, a monthly tier, and decent free voices converts its refund-seekers directly.

cross-checked: kept 3, cut 0

Yahoo Mail - Organised Email (US) — 25 recent 1–2★ (50% of 50) · Top Grossing #9
  • Users hurting on: post-update freezes/blank screens (5, high); spam that 3,500 blocks can't stop (4, high); vanished folders/contacts (5, high).
  • Asking for and NOT getting: spam control without the $4.99/mo tier (1), deletions that stick (1).
  • Your opening: a fading legacy inbox charging for spam relief — a lightweight mail client whose spam filter just works picks up 30-year veterans already announcing their exit.

cross-checked: kept 2, cut 0

ChatGPT (UK) — 54 recent 1–2★ (27% of 200) · Top Grossing #1
  • Users hurting on: image generation dying midway (7, high) — "Starts creating the image, then stops, provides no information"; environmental backlash (7, high) — "I've switched to EcoGPT because this is one of the main ai systems that is destroying our planet"; ads served to paying subscribers (5, high) — "You either serve ads OR you charge. You don't do both"; shrinking free limits (5, high) — "Free version used to be great but the limit reset time is ridiculous now"; app broken/frozen (6, med).
  • Asking for and NOT getting: ad-free experience for payers (1), more free image credits (2), consistent faces across edits (1).
  • Your opening: still a wall (3.82★), but the ad rollout is the first crack, and the UK eco-boycott cluster is absent from US reviews — position against "ads in your AI" before the resentment matures.

cross-checked: kept 3, cut 1 (consolidated quality/moderation into app-broken cluster)

Claude by Anthropic (UK) — 68 recent 1–2★ (45% of 150) · Top Grossing #2
  • Users hurting on: quality/instruction-following collapse (12, high) — "Claude is now unusable for simple work tasks. It ignores you, hallucinates, loses content easily"; broken app shell (9, high) — "Whenever I open the app it says something went wrong and doesn't load"; limits even on paid plans (8, high) — "paid for a subscription after three messages it tells me to upgrade"; guardrail paternalism (8, high) — "Never in my 49 years have I been told \"now shoo, go to bed\" at 8am in the morning!".
  • Asking for and NOT getting: the newest model at parity with the US (3 region-gating complaints, med), voice/TTS that doesn't cut off (2), mobile project sync (1).
  • Your opening: fading hardest of its three storefronts (0.37) while gating UK users behind ID checks and model delays — any assistant that treats the UK as a first-class region inherits its leavers.

cross-checked: kept 3, cut 1 (removed rolled-back Sonnet claim; insufficient evidence)

Grok - AI Assistant (UK) — 74 recent 1–2★ (37% of 200) · Top Grossing #3
  • Users hurting on: weekly/paid rate limits (16, high) — "Barely generated 20 \"speed\" images and 8 quality images before being rate limited"; free tier gutted + upsell pushiness (12, high) — "for free users, prompts went from 30, to 20 and now 10"; Imagine quality regression (7, high) — "Why has the intelligence dropped so badly, it cant separate people from backgrounds"; UK moderation overreach (6, med) — "this app rejects all images of clothed people because UK laws".
  • Asking for and NOT getting: character consistency in video (2), transparent limit meters (1), the daily-limits switch reversed (multiple).
  • Your opening: a fading #3 that changed the deal after purchase at every tier — an image/video tool with published, fixed quotas takes its cancelling subscribers.

cross-checked: kept 3, cut 1 (removed voice-personas claim; marginal evidence)

Dropbox: Cloud File Storage (UK) — 121 recent 1–2★ (60% of 200) · Top Grossing #4
  • Users hurting on: billing traps (15, high) — "I had £90 removed from my account for an upgrade I neither asked for or wanted"; sync/reliability regressions (13, high) — "it's become very unreliable syncing across devices"; storage upsell blocking access to own files (9, high) — "Won't let me look at my photos without tell me I've ran out of storage!!!"; UX complexity (8, high) — "It's turned into a corporate tool to sell".
  • Asking for and NOT getting: a usable free tier (2), a 500GB/1TB mid plan (1), per-account colour themes (1).
  • Your opening: 60% negative at a fading #4 — the single widest file-storage opening in this report; win on cancel-anytime billing and a mid-size plan Dropbox refuses to sell.

cross-checked: kept 3, cut 1 (removed unreachable-support claim; count below threshold; iPad-feature gap removed; insufficient distinct evidence)

Microsoft Word (UK) — 89 recent 1–2★ (45% of 200) · Top Grossing #6
  • Users hurting on: subscription wall / entitlement failures (14, high) — "I've been paying for this for months and when I need to make a document it's asking [me to buy]"; keyboard-vanishing, crash and lag bugs (13, high) — "Update has made keyboard disappear when using Edit mode - fix ASAP please!"; iPad/iPhone UX inferior to desktop (10, med) — "It feels way harder to use than it should be"; data loss despite autosave (5, med); Copilot/AI intrusion (5, high) — "Word has hijacked my ability to control what I write by inserting words I have not chosen".
  • Asking for and NOT getting: an off switch for Copilot/correction bubbles that actually works (1), an iPad UX that matches desktop (10 complaints).
  • Your opening: a fading staple whose mobile editor is paywalled and buggy — a fast, reliable, one-price document editor for iPhone/iPad meets 89 reviewers' stated need.

cross-checked: kept 3, cut 0

Surfshark VPN (UK) — 27 recent 1–2★ (27% of 100) · Top Grossing #8
  • Users hurting on: VPN IPs detected/blocked by websites (11, high) — "their VPN IP addresses are constantly misidentified by websites"; new UI removed features — favourites, double-hop, safe search (4, high) — "The option for double hop vpn has disappeared from the app".
  • Asking for and NOT getting: restore favourites ordering (1), fix auto-connect issues (1).
  • Your opening: surging (0.69) and mostly loved — not a target to attack, but its feature-stripping redesign shows even winners shed users when they delete power-user features; the opening is narrow and time-limited.

cross-checked: kept 2, cut 0

Perplexity - AI Search & Chat (UK) — 52 recent 1–2★ (52% of 100) · Top Grossing #9
  • Users hurting on: credit system gutted Pro (14, high) — "Clicked on free trial, they took £20 & within an hour of playing I need to add credits"; accuracy/quality decline (9, high) — "It gets stuck in loops. It ignores what you say"; iPad app frozen for a week+ (8, high) — "iPad app has been frozen and unresponsive for nearly a week"; ads/upsell inside a paid product (3, med); phone-number wall on existing subscribers (3, med).
  • Asking for and NOT getting: stop Computer popups (1), option not to auto-open Computer (1).
  • Your opening: steady on chart but 52% negative — an answer-engine with flat, honest pricing and a working tablet app flips its Pro refugees.

cross-checked: kept 3, cut 1 (removed refund-refusals claim; insufficient distinct evidence; lost-history claim merged)

Microsoft OneDrive (UK) — 45 recent 1–2★ (90% of 50) · Top Grossing #10
  • Users hurting on: file operations broken since update — move/multi-select/delete crash (12, high) — "Since the last update you can't move files on iOS"; MS Lens shutdown fallout — no document scanner replacement (5, high) — "Wanted to use MS Lens but I cannot scan anymore w/o this app"; sync/upload failures + corrupt files (5, high) — "photos videos just disappear, can't play videos can't save files to devices".
  • Asking for and NOT getting: duplicate-photo finder (2), delete more than 20 images at a time, whole-folder download (1 multi-item plea).
  • Your opening: 90% negative at a fading #10 — the Lens shutdown orphaned a scanning use-case worth targeting directly with a simple scan-to-PDF-to-cloud tool.

cross-checked: kept 3, cut 1 (removed notification/photos-app-nagging; Copilot intrusion; Account/Vault access claims; below confidence threshold)

Claude by Anthropic (TR) — 28 recent 1–2★ (56% of 50) · Top Grossing #2
  • Users hurting on: app won't open / "Something went wrong" (5, high) — "Hata veriyor Something went wrong" (gives the error — same loop as US/GB); no Turkish UI (4, high) — "Uygulama arayüzünde dil seçemiyoruz büyük bir eksiklik" ("we can't pick a language in the app UI, a major gap"); limits/pricing (4, high) — "Free den pro geçtik free kadar soru soramadım hemen limit doldu" ("upgraded free→Pro, couldn't ask even as many questions as free before hitting the limit"); unexplained bans, appeals ignored (3, med) — "hiç bir sebeb yok iken ban yedim … 200 dolara claude pro almıştım" ("banned for no reason … I'd bought Claude Pro for $200"); quality — superficial/erroneous answers (4, high).
  • Asking for and NOT getting: Turkish interface language (3 — the dominant request), Cowork on iPad (1).
  • Your opening: a fading #2 grossing app in TR with no local language — an indie AI assistant that is Turkish-first (UI, prompts, support) attacks the exact gap its own reviewers spell out; this is the cleanest TR-only opening in the category.

cross-checked: kept 4, cut 1 (removed under-18-age-gate claim; only 2 supporting reviews, below threshold)

Perplexity - AI Search & Chat (TR) — 25 recent 1–2★ (50% of 50) · Top Grossing #9
  • Users hurting on: credit system + price hikes (10, high) — "1 aylık pro paketi aldım 4000 kredi verdi,3 gün demeden kredi bitti" ("bought 1 month of Pro, got 4,000 credits, they ran out in under 3 days"); paid accounts suspended, refunds refused (3, high) — "Suspended paid access, refused refund or human review"; quality (5, med) — "Verdiğiniz paraya değmez" ("not worth the money you pay"); crash/freeze since last update (1, low).
  • Asking for and NOT getting: cheaper regional tier (1 explicit request: "$5-7 a month"), account deletion support (1).
  • Your opening: 50% negative and TR purchasing power makes the credit model radioactive — a lira-priced, flat-fee AI search tier wins this storefront on pricing alone.

cross-checked: kept 3, cut 1 (removed mandatory-phone-verification as standalone; news-notification-spam claim too marginal)

Gmail - Email by Google (TR) — 108 recent 1–2★ (72% of 150) · Top Grossing #10
  • Users hurting on: account-switch freeze since last update (18, high) — "Son güncellemeden sonra hesaplar arasında geçiş yapılmıyor, donuyor uygulama" ("since the last update you can't switch accounts, the app freezes"); login/app won't open — endless spinner (13, high) — "Dönüp duruyor ama açmıyor" ("it just spins and never opens"); attachment/compose bugs incl. Turkish-encoding failure (9, high) — "ISO-8859-9 Türkçe karakter kodlamasıyla gelen ekler aç[ılmıyor]" ("attachments with Turkish ISO-8859-9 encoding won't open"); app bloat — 700+MB weekly updates (6, med) — "Neden Haftada 2 devasa güncelleme (700+mb) neden neden neden…?" ("why two giant 700+MB updates a week?"); storage-full paywall blocking mail even after paying (5, high) — "İki defa ücret ödediğim halde mail alamıyorum" ("I paid twice and still can't receive mail").
  • Asking for and NOT getting: unread-only filter on All Inboxes (2), bulk delete (2) — "10 yıldır yorumlara sadece toplu silme yazı[lıyor]" ("for 10 years these reviews have asked only for bulk delete").
  • Your opening: 72% negative at a fading default — a lightweight Turkish-first mail client (fast account switching, unread filter, bulk delete, correct TR encoding) answers a decade of ignored requests on this storefront.

cross-checked: kept 5, cut 1 (removed iOS-version-gating; only 4 supporting reviews; notifications-not-arriving merged to connectivity category)

76/100Prime75 and uptop 8%

On-Device Minutes — private meeting notes

Crowded🇺🇸 US·Productivity

The consultant/clinician who wants meeting transcripts but can't send confidential audio to a cloud note-taker adopts a recorder that transcribes and summarizes entirely on-device. Demand is climbing now and privacy is the single feature the accelerating leaders don't offer.

Wedges into no charted leader · about a month to build · under $25 a month · sold subscription

Wedges into no charted leader in a lane pulling 114.4M installs a month across 150 charted apps. Built solo in about a month for under $25 a month and sold subscription, it could plausibly reach 114k916k installs a month.

114.4M a month
×10 on the first tenth
114k916k could be yoursdivisions = tenths
The lane
150 apps chart here
no giant guards this lane
75/100Prime75 and uptop 15%

Read Aloud — honest book-to-speech

Crowded🇺🇸 US·Productivity

The reader who bought Speechify to listen to a PDF/EPUB, then discovered they must scan every page and pay $140/yr revealed only after a quiz — they refund and search "text to speech" again this week. On-device voices, import a whole book at once, pay once.

Wedges into Speechify – Text to Speech · about a week to build · nothing to run · sold one-time

Wedges into Speechify – Text to Speech in a lane pulling 114.4M installs a month across 150 charted apps. Built solo in about a week for nothing to run and sold one-time, it could plausibly reach 114k916k installs a month.

114.4M a month
×10 on the first tenth
114k916k could be yoursdivisions = tenths
The lane
big dot · Speechify – Text to Speech
no giant guards this lane
73/100Strong62–74top 23%

Focus Lock — local-first screen-time control

Crowded🇬🇧 UK·Productivity

UK demand for screen-time control is spiking (Opal's fast climb), but users want a blocker that works fully on-device with no account and no cloud — a privacy angle Opal's subscription model doesn't lead on.

Wedges into no charted leader · about a month to build · nothing to run · sold subscription

Wedges into no charted leader in a lane pulling 14.9M installs a month across 146 charted apps. Built solo in about a month for nothing to run and sold subscription, it could plausibly reach 15k119k installs a month.

14.9M a month
×10 on the first tenth
15k119k could be yoursdivisions = tenths
The lane
146 apps chart here
no giant guards this lane
72/100Strong62–74top 31%

Scan2PDF — the MS Lens replacement

Crowded🇬🇧 UK·Productivity

Every OneDrive user who wrote "Wanted to use MS Lens but I cannot scan anymore w/o this app" after Microsoft killed Lens — they have no scanner and need capture → clean → PDF → cloud, today.

Wedges into Microsoft OneDrive · about a week to build · nothing to run · sold one-time

Wedges into Microsoft OneDrive in a lane pulling 14.9M installs a month across 146 charted apps. Built solo in about a week for nothing to run and sold one-time, it could plausibly reach 15k119k installs a month.

14.9M a month
×10 on the first tenth
15k119k could be yoursdivisions = tenths
The lane
big dot · Microsoft OneDrive
no giant guards this lane
69/100Strong62–74top 38%

Meter — bring-your-own-key AI chat

Crowded🇺🇸 US·Productivity

The Claude/ChatGPT power user who publicly counts wasted tokens ("It's programmed to burn through credits") switches to a client where they paste their own API key, see the exact cost of a request before it sends, and keep history locally. Not another model — a transparent front-end.

Wedges into Claude by Anthropic · about a month to build · nothing to run · sold one-time

Wedges into Claude by Anthropic in a lane pulling 114.4M installs a month across 150 charted apps. Built solo in about a month for nothing to run and sold one-time, it could plausibly reach 114k916k installs a month.

114.4M a month
×10 on the first tenth
114k916k could be yoursdivisions = tenths
The lane
big dot · Claude by Anthropic
no giant guards this lane
67/100Strong62–74top 46%

Sufle — Turkish teleprompter for creators

Quick win🇹🇷 TR·Productivity

TR content creators are pulling a teleprompter up the chart fast; a simple, Turkish-first prompter (adjustable speed, mirror mode, camera overlay) rides that wave with a weekend-sized build and no giant to fight.

Wedges into no charted leader · a weekend to build · nothing to run · sold ads + iap

Wedges into no charted leader in a lane pulling 8.9M installs a month across 147 charted apps. Built solo in a weekend for nothing to run and sold ads + iap, it could plausibly reach 45k178k installs a month.

8.9M a month
×10 on the first tenth
45k178k could be yoursdivisions = tenths
The lane
147 apps chart here
no giant guards this lane
66/100Strong62–74top 62%

Asistan — Turkish-first AI assistant

Solid🇹🇷 TR·Productivity

The TR user who spells out the gap — "Uygulama arayüzünde dil seçemiyoruz büyük bir eksiklik" — switches to an assistant whose UI, prompts, and support are Turkish-native, priced in lira, with limits that don't collapse after upgrading. This is the cleanest TR-only opening in the category.

Wedges into Claude by Anthropic · about a month to build · $25–100 a month · sold subscription

Wedges into Claude by Anthropic in a lane pulling 8.9M installs a month across 147 charted apps. Built solo in about a month for $25–100 a month and sold subscription, it could plausibly reach 45k178k installs a month.

8.9M a month
×10 on the first tenth
45k178k could be yoursdivisions = tenths
The lane
big dot · Claude by Anthropic
no giant guards this lane
66/100Strong62–74top 62%

Kredi Yok — flat-lira AI search

Solid🇹🇷 TR·Productivity

The TR Perplexity subscriber whose "yıllık pro hesabım çöp oldu" after the credit switch — credits that evaporate in 3 days at 13,000 lira. They defect to a cited-answer search tool with one flat lira fee and no credit meter.

Wedges into Perplexity - AI Search & Chat · about a month to build · $25–100 a month · sold subscription

Wedges into Perplexity - AI Search & Chat in a lane pulling 8.9M installs a month across 147 charted apps. Built solo in about a month for $25–100 a month and sold subscription, it could plausibly reach 45k178k installs a month.

8.9M a month
×10 on the first tenth
45k178k could be yoursdivisions = tenths
The lane
big dot · Perplexity - AI Search & Chat
no giant guards this lane
64/100Strong62–74top 69%

Belge — Turkish OCR scan-to-PDF

Quick win🇹🇷 TR·Productivity

A scan/OCR PDF tool is climbing fast in TR while CamScanner's TR goodwill quietly erodes (44% negative). A Turkish-first scanner with on-device Turkish OCR and no subscription meets rising demand cleanly.

Wedges into no charted leader · about a week to build · nothing to run · sold one-time

Wedges into no charted leader in a lane pulling 8.9M installs a month across 147 charted apps. Built solo in about a week for nothing to run and sold one-time, it could plausibly reach 45k178k installs a month.

8.9M a month
×10 on the first tenth
45k178k could be yoursdivisions = tenths
The lane
147 apps chart here
no giant guards this lane
60/100Workable52–61top 85%

Simple Vault — cloud backup without the traps

Crowded🇬🇧 UK·Productivity

The Dropbox user who had "£90 removed for an upgrade I neither asked for or wanted" and got locked out of their own photos at the storage cap — 60% of recent reviews are this. They want cancel-anytime billing, a mid-size plan, and access to files they already uploaded.

Wedges into Dropbox: Cloud File Storage · a quarter or more to build · $100+ a month · sold subscription

Wedges into Dropbox: Cloud File Storage in a lane pulling 14.9M installs a month across 146 charted apps. Built solo in a quarter or more for $100+ a month and sold subscription, it could plausibly reach 15k119k installs a month.

14.9M a month
×10 on the first tenth
15k119k could be yoursdivisions = tenths
The lane
big dot · Dropbox: Cloud File Storage
no giant guards this lane
60/100Workable52–61top 85%

One-Price Docs — mobile document editor

CrowdedGiant🇬🇧 UK·Productivity

The Word subscriber told "I've been paying for this for months and when I need to make a document it's asking [me to buy]" — plus the keyboard-vanishing bug and forced Copilot insertions. They want to open, edit, and export a .docx on iPhone/iPad without a subscription entitlement check.

Wedges into Microsoft Word · about a month to build · nothing to run · sold one-time

Wedges into Microsoft Word in a lane pulling 14.9M installs a month across 146 charted apps, one of them a giant. Built solo in about a month for nothing to run and sold one-time, it could plausibly reach 7k59k installs a month.

14.9M a month
×10 on the first tenth
7k59k could be yoursdivisions = tenths
The lane
big dot · Microsoft Word · a giant
a giant owns this lane
51/100Thinunder 52top 92%

Posta — lightweight Turkish mail client

Crowded🇹🇷 TR·Productivity

The Gmail-on-iOS user in open revolt — 72% negative — who can't switch accounts without the app freezing, can't open Turkish-encoded attachments, and has begged for bulk delete "for 10 years." A fast Turkish-first client answers a decade of ignored requests.

Wedges into Gmail - Email by Google · a quarter or more to build · under $25 a month · sold ads + iap

Wedges into Gmail - Email by Google in a lane pulling 8.9M installs a month across 147 charted apps. Built solo in a quarter or more for under $25 a month and sold ads + iap, it could plausibly reach 9k71k installs a month.

8.9M a month
×10 on the first tenth
9k71k could be yoursdivisions = tenths
The lane
big dot · Gmail - Email by Google
no giant guards this lane
46/100Thinunder 52top 100%

Just Mail — a spam filter that works

CrowdedGiant🇺🇸 US·Productivity

The 30-year Yahoo veteran announcing their exit ("since 1995") because they get 40+ spam a day despite 3,500 blocks and are asked to pay $4.99/mo for relief — they want a lightweight inbox where spam filtering is included and updates don't blank the screen.

Wedges into Yahoo Mail - Organised Email · a quarter or more to build · under $25 a month · sold one-time

Wedges into Yahoo Mail - Organised Email in a lane pulling 114.4M installs a month across 150 charted apps, one of them a giant. Built solo in a quarter or more for under $25 a month and sold one-time, it could plausibly reach 57k458k installs a month.

114.4M a month
×10 on the first tenth
57k458k could be yoursdivisions = tenths
The lane
big dot · Yahoo Mail - Organised Email · a giant
a giant owns this lane
Tiers75 and up62–7452–61under 52
Verdict
Quick winhigh score, easy buildPrime betstrong opportunitySolidmid, workableCrowdedjammed / giant guards itLong shotweak