Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
Sold isn't the same as profit.
$0.99
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Your first Build Kit is free with a verified email.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for ResaleHQ: Reseller Tracker: map the core Business workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Sold isn't the same as profit. ResaleHQ tracks every resale from the moment you buy stock to the moment payment lands. Profit only counts when the money is actually in your account — not when the buyer clicks buy. THE FULL JOURNEY Acquired — log buy price, source, photo and quantity as you pick it up. Listed — tick every marketplace you've cross-listed on, and at what price. Sold — record which platform it sold through, plus fees and postage. Despatched — assign a carrier and mark it posted. Payment received — profit confirmed. That's your real number. CROSS-LIST ANYWHERE One item, listed on several marketplaces at once. When it sells, record which one it went through — so you find out which platform genuinely earns you the most. Works with Vinted, Depop, eBay, Whatnot, eBay Live, TikTok Shop, Facebook Marketplace, Discogs, Bidzzy, Reluv, Wadded, Minted, Gumtree, Shpock, Tilt, Poshmark, Mercari, OfferUp and more. SALE FELL THROUGH? Buyer ghosted you? Undo the sale in one tap and the unit goes straight back to listed or into stock. Your figures stay honest. DESPATCH QUEUE Everything awaiting posting, grouped by carrier. Tap Royal Mail to see your Royal Mail pile and work through the lot in one go. Royal Mail, Evri, InPost, Relay, plus USPS, UPS, FedEx, DHL, An Post, Canada Post, Australia Post, NZ Post and more. KNOW YOUR NUMBERS Confirmed profit by month, by platform and by category. Find out whether it's the trainers or the vinyl actually paying you. Inventory value at cost and at listed price. Top sellers at a glance. JOB LOTS DONE PROPERLY Bought a bundle? Add it as a batch and ResaleHQ splits the cost across units automatically, then tracks each one separately. Real profit per piece, not guesswork. BUILT FOR ANYWHERE GBP, EUR, USD, CAD, AUD and NZD, with carriers for the UK, Ireland, US, Canada, Australia and New Zealand. YOUR DATA STAYS YOURS No account. No subscription. No server. Everything lives on your device. Automatic backups run daily, with a Data Recovery screen if you ever need to restore. Export to CSV for your tax return or to move to a new phone. One payment. No subscription. Ever.
Written user reviews are not shown here. Check current App Store reviews >
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor performance
Validate with people who use this workflow before building.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
Not assessed in a Build Kit yet.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.