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.
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$4.99
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.
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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.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Fold is a reader for people who still keep a list of sites worth following. Subscribe to RSS, Atom, and JSON feeds and read them in typography built for long articles, not for dashboards. Anything you download stays in your library long after it scrolls out of the publisher's feed. READING Open an article and the saved text is already there. Fold quietly fetches the full piece when a feed carries only a summary, keeps your place when you leave, and carries you on to the next article when you're done. Tap the headline to open the original in Safari. Set the type size, choose serif or sans, and pick light or dark to match how you read. YOUR LIBRARY Star the pieces worth returning to. Search everything by title, text, author, or source. Mute topics you would rather not see, without marking them read, and bring muted articles back whenever you want. Unsubscribe from a feed and your starred articles stay put. TAKING IT WITH YOU Import and export OPML, so your subscriptions move to and from any other reader. Export a complete Fold backup, including feeds, articles, read and starred state, and mute rules, then import it later without overwriting choices you have already made. Share an article's link, or its full text behind a prefix you write yourself, which is useful for pasting into notes or an AI assistant. HABITS A daily streak, articles opened, starred count, and library size. A quiet record of what you actually read. WORTH KNOWING Fold keeps a local library. There is no Fold account, no subscription, and no server holding your reading. Saved text is available offline. Images and original web pages still need a connection, and full text depends on what each publisher makes available. iOS decides when background refresh runs, so Fold cannot promise to catch every item that disappears quickly. iPhone only. Sync, iPad, and Mac are not part of this release.
Written user reviews are not shown here. Check current App Store reviews >
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.