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.
Welcome to a wide world of wonderful audiobooks, ebooks, and things that aren’t books but are still pretty great.
Free · 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.
Rork plan preview for Storytel - Audiobooks Library: map the core Books 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.
Welcome to a wide world of wonderful audiobooks, ebooks, and things that aren’t books but are still pretty great. Storytel is home to beloved stories, in-depth podcasts, and exclusive Storytel Originals. Whether you listen or read, you’ll find the right story for any moment. • Explore a massive library of stories in English and other languages • Jump freely from story to story until you find one you love • Build your bookshelf and get personalized recommendations • Find what fits your mood, like crime, feel-good, or self-development • Follow your favorite authors and series • Browse and share reviews and reactions • Try out that book your friend keeps talking about • Discover what’s trending in the culture LISTEN AND READ YOUR WAY • Listen to audio stories on your iPhone, iPad, Apple Watch and CarPlay • Stream stories or download them for later • Switch between listening and reading anywhere in a book • Listen at your own pace: regular, sped up, or slowed down • Set bookmarks and attach your thoughts as notes • Drift off to dreamland with the sleep timer • Spare those pretty eyes with Dark Mode • See your stats and set a Listening Goal KIDS MODE INCLUDED • Let your kid find adventure in a space with just children’s stories • Show or hide children’s books in your bookshelf • Set your own pin code for parental control HOW IT WORKS Storytel is available in 25+ countries, including both local and international story treasures in different languages. A subscription gives you access to our ever-growing library of audiobooks, ebooks, and other stories. In-app subscriptions will be charged via your iTunes account. Your subscription will automatically renew at the end of the subscription period unless auto renewal is turned off in your iTunes account settings at least 24 hours before your subscription period runs out. When a free trial is offered, we will ask you to add a payment method when starting the trial. But don't worry – if you cancel before the last day of the trial you won't be charged. The content, languages and subscriptions available may vary by region. Some titles and offers shown above may not be available in your country or selected subscription plan. Terms and conditions: https://www.storytel.com/documents/terms-and-conditions Privacy policy: https://www.storytel.com/documents/privacy-policy Questions? Feedback? Speak to a real person! Reach us at [email protected]
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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.
Hypothesis 1
Assumption to check: Limited selection of free audiobooks
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent audio playback quality
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited personalization options
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.
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.