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.
Postcast is a minimalist iOS, iPadOS, and macOS app that turns written content into listenable audio
$0.99 · In-app purchases
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.
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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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Postcast is a minimalist iOS, iPadOS, and macOS app that turns written content into listenable audio. Share a link from Safari or any app, paste an article or a post from X, or import a PDF or text file. Postcast extracts the readable text on your device and reads it aloud with a polished, natural neural voice. Your articles live in a library that works like Notes: folders you name, search across all of them, and a Recently Deleted folder that keeps anything you remove for 30 days. The player works like a podcast app: play and pause from the lock screen, Control Center, or your car, skip 15 seconds in either direction, scrub anywhere, and pick pitch-corrected speeds from 0.75x to 2x. The words light up on screen as they are spoken and the page scrolls to keep up, a tap on any paragraph jumps straight to it, and every article remembers where you left off. Line up what to hear next with Play Next and Play Last. Listening starts within seconds, and the rest of the article keeps rendering while you listen. Share a reply from an X thread and Postcast reads the whole conversation that led to it, from the first post down. Everything happens on your device. The voice is built into the app, so there is nothing to download and listening works completely offline from the moment you install it. Articles are fetched directly from the link you share and never pass through any server, and nothing you read is ever sent anywhere to be spoken. One purchase covers iPhone, iPad, and Mac: no subscriptions, no in-app purchases, no accounts, and no ads. That is how it will stay. Postcast is an independent app and is not affiliated with any publisher or content platform.
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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.
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.
From the Build Kit assessment.
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.