Where the next app actually wins.

The person who scanned a document and hit a wall demanding "$11.99 weekly!!!!" just to save it installs a scanner with a genuinely free tier and one-tap cancel. WHY NOW: the highest-grossing pure dark-pattern scanner is fading (0.42) in the biggest market while its review wall does the competitive advertising for you.

Wedges into Scanner App - Scan PDF & Docs · about a week to build · nothing to run · sold ads + iap

Wedges into Scanner App - Scan PDF & Docs in a lane pulling 42.2M installs a month across 179 charted apps. Built solo in about a week for nothing to run and sold ads + iap, it could plausibly reach 42k–338k installs a month.

The handyman who sends 5 invoices a month and just got his Invoice Simple plan silently nerfed from unlimited to 10 invoices switches the day he sees a competitor promise "your price never changes, no invoice limits, ever." WHY NOW: Invoice Simple is fading (growPotential 0.35) while its own paying base writes 78 one-star reviews teaching each other to shop around — the single loudest complaint cluster in US Business.

Wedges into Invoice Simple - Receipt Maker · about a week to build · nothing to run · sold one-time

Wedges into Invoice Simple - Receipt Maker in a lane pulling 42.2M installs a month across 179 charted apps. Built solo in about a week for nothing to run and sold one-time, it could plausibly reach 42k–338k installs a month.

The UK tradesperson whose Invoice Simple plan was cut to 3 invoices/month unless they pay £200/yr switches to a fixed-price invoicer that speaks British — "Quote" not "Estimate," correct VAT totals, CIS-aware. WHY NOW: Invoice Simple UK has the flattest trend of any UK flagship (growPotential 0) while its reviews are "a single sustained scream about pricing betrayal" (~65 of 86 recent negatives).

Wedges into Invoice Simple - Receipt Maker · about a week to build · nothing to run · sold one-time

Wedges into Invoice Simple - Receipt Maker in a lane pulling 2.8M installs a month across 180 charted apps. Built solo in about a week for nothing to run and sold one-time, it could plausibly reach 3k–23k installs a month.

The QuickBooks contractor who waits 5–7 minutes for the app to open just to log a receipt installs a companion that opens in under a second, captures the receipt/mileage, and pushes it to QuickBooks via API. WHY NOW: QuickBooks holds rank (0.47) but ships AI on top of a five-year reliability collapse; reviewers literally write "I wish QB had a separate app just for uploading receipts."

Wedges into QuickBooks Small Business · about a month to build · under $25 a month · sold subscription

Wedges into QuickBooks Small Business in a lane pulling 42.2M installs a month across 179 charted apps. Built solo in about a month for under $25 a month and sold subscription, it could plausibly reach 42k–338k installs a month.

The job seeker drowning in LinkedIn's promoted-job flood with no pay filter and no way to see saved jobs on mobile switches to a focused search layer that shows only pay-disclosed listings, scores each on "is this company actually hiring," and tracks every application. WHY NOW: LinkedIn's job experience is fading (0.32) and 200 recent reviewers locate the pain precisely — "PLEASE ADD A TAB FOR 'only show jobs with pay information.'"

Wedges into LinkedIn: Community & Career · about a month to build · under $25 a month · sold ads + iap

Wedges into LinkedIn: Community & Career in a lane pulling 42.2M installs a month across 179 charted apps. Built solo in about a month for under $25 a month and sold ads + iap, it could plausibly reach 42k–338k installs a month.

The UK user scanning a 50-page document who watches the app "keep shutting down after I've taken all the pictures" AND then gets asked to "pay to upload the file" switches to a scanner that handles long documents without crashing and never paywalls the export. WHY NOW: the incumbent's UK trend is already collapsing (growPotential 0.12) and its anger is both pricing AND a concrete product bug.

Wedges into Scanner App - Scan PDF & Docs · about a week to build · nothing to run · sold one-time

Wedges into Scanner App - Scan PDF & Docs in a lane pulling 2.8M installs a month across 180 charted apps. Built solo in about a week for nothing to run and sold one-time, it could plausibly reach 14k–57k installs a month.

The user who "just doesn't have $14 to view and save one document" and misses the old, simple Adobe Fill & Sign buys a clean $9.99 fill-sign-annotate tool with no AI button obscuring the page. WHY NOW: Acrobat is steady in rank (0.5) but its anger is structural (billing traps + AI bloat) — exactly what a minimal one-time competitor is immune to.

Wedges into Adobe Acrobat Reader: Edit PDF · about a month to build · nothing to run · sold one-time

Wedges into Adobe Acrobat Reader: Edit PDF in a lane pulling 42.2M installs a month across 179 charted apps. Built solo in about a month for nothing to run and sold one-time, it could plausibly reach 42k–338k installs a month.

The Xero power user who loves the ledger but calls the mobile app "pointless — no quotes, it's ridiculous" installs a companion that does quotes, purchase orders, and expenses on the phone and syncs to Xero's API. WHY NOW: Xero is surging in the UK (growPotential 1, 50% up-days) which makes its unserved-on-mobile base larger every week, and it just REMOVED in-app expenses.

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 2.8M installs a month across 180 charted apps. Built solo in about a month for under $25 a month and sold subscription, it could plausibly reach 14k–57k installs a month.

The Turkish job seeker who fills in an entire CV and is ambushed at the export step ("sonunda para istiyor tam çakallık" — demands money at the end, pure jackal move) uses a builder that lets them export one CV free (ad-supported) and shows the price upfront. WHY NOW: the incumbent is surging (0.6) purely by converting resentful, broke job seekers via sunk-cost paywall — 66% negative means the growth is rented, not loyal, and a reviewer literally proposes the ad-supported free export as the fix.

Wedges into CV Maker - Intelligent Resume · about a week to build · nothing to run · sold ads + iap

Wedges into CV Maker - Intelligent Resume in a lane pulling 906k installs a month across 175 charted apps. Built solo in about a week for nothing to run and sold ads + iap, it could plausibly reach 5k–18k installs a month.

The Turkish user who installs a scanner and is told "ücretsiz hiçbir işlem yapamazsınız" (you can do nothing for free) gets one that genuinely scans, saves, and shares for free, with a cheap one-time unlock in lira instead of a weekly trap. WHY NOW: the TR scanner cluster is a monoculture of fraud complaints and the fading incumbents hold top-grossing slots purely on ad-funnel and residual subscriptions — rented rank an honest app can take.

Wedges into Scanner App - Scan PDF & Docs · about a week to build · nothing to run · sold one-time

Wedges into Scanner App - Scan PDF & Docs in a lane pulling 906k installs a month across 175 charted apps. Built solo in about a week for nothing to run and sold one-time, it could plausibly reach 5k–18k installs a month.

The UK sole trader being force-migrated off QuickBooks Self-Employed into "Sole Trader" for MTD — a change they call "a total nightmare" — switches to a fast, MTD-ready receipt+income app at the exact moment Intuit breaks their decade-old workflow. WHY NOW: it's the worst-reviewed flagship in the entire dataset (1.54★, 86% negative) and the MTD deadline is force-marching hundreds of thousands of sole traders through it right now.

Wedges into QuickBooks Small Business · a quarter or more to build · under $25 a month · sold subscription

Wedges into QuickBooks Small Business in a lane pulling 2.8M installs a month across 180 charted apps. Built solo in a quarter or more for under $25 a month and sold subscription, it could plausibly reach 14k–57k installs a month.

The Turkish shopkeeper whose WhatsApp Business just got bricked on their iPhone 7 ("Maddi kayıp yaşıyorum" — I'm losing money) AND whose free bulk holiday greetings just became paid vanishing credits gets a companion: a customer-notes CRM, a bayram bulk-greeting composer/scheduler, and a backup exporter. WHY NOW: Meta simultaneously broke the app on the devices TR merchants own and started charging for their highest-value habit (holiday greetings).

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 906k installs a month across 175 charted apps. Built solo in about a week for nothing to run and sold one-time, it could plausibly reach 5k–18k installs a month.

The Turkish job seeker on an iPhone 7 who's been locked out of LinkedIn by a forced iOS 16.6 update — "LinkedIn diyor ki: 'FAKİRLER KULLANMASIN'" (LinkedIn says: the poor shouldn't use it) — installs a lightweight iOS-15-compatible job search + "başvurularım" (my applications) tracker. WHY NOW: the #1 grossing app is fading (0.28) and literally locking out job seekers by device wealth, and ~80 of its TR negatives say exactly that.

Wedges into LinkedIn: Community & Career · about a month to build · under $25 a month · sold ad-supported

Wedges into LinkedIn: Community & Career in a lane pulling 906k installs a month across 175 charted apps. Built solo in about a month for under $25 a month and sold ad-supported, it could plausibly reach 5k–18k installs a month.

The Turkish tutor whose Zoom iPad whiteboard keeps failing — "Kalem bi gözüküp bi kayboluyor" (the pen appears then disappears), keyboard closes mid-writing — screen-shares a dedicated, rock-solid Apple Pencil whiteboard through Zoom instead. WHY NOW: TR's private-lesson economy runs on Zoom+iPad and its teachers are documenting every regression while the incumbent keeps breaking their most loyal segment.

Wedges into Zoom Workplace · about a month to build · nothing to run · sold subscription

Wedges into Zoom Workplace in a lane pulling 906k installs a month across 175 charted apps. Built solo in about a month for nothing to run and sold subscription, it could plausibly reach 906–7k installs a month.