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.
*App Store Award Winner -Apple Watch App of the Year*
Free · In-app purchases
Evidence scope: #79 is the current overall US Grossing chart position. 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 Strava: Run, Bike, Walk: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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 social features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Premium features can be expensive for casual users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Data syncing issues with GPS accuracy
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Overwhelming amount of data for beginners
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
*App Store Award Winner -Apple Watch App of the Year* Strava makes fitness tracking social. We house your entire active journey in one spot – and you get to share it with friends. Here’s how: • Record everything – runs, rides, hikes, yoga and over 50+ other sport types. Think of Strava as the homebase of your movement. • See the full story of your strength training – Lifting in the gym weekly, doing HIIT workouts, and showing up to your group weight training classes? Use your favorite device or strength app and your exercises, sets, reps, weights and a muscle map show up automatically. Or start your strength journey today and see how quickly strength workouts become a key part of your active life. • Discover anywhere – our Routes tool uses de-identified Strava data to intelligently recommend popular routes based on your preferences. You can also build your own. • Uncover popular hiking Routes in your area, including local favorites, scenic trails, and long-distance climbs • Build a support network – Strava’s about celebrating movement. Here you’ll find your community and cheer each other on. • Train smarter – get data insights to understand your progress and see how you improve. Your Training Log is the record of all your workouts. • Get more from your workout – Powered by AI, Athlete Intelligence turns workout data into into instant insights. Keeping you motivated and ready for the next workout – without the guesswork. • Move safer – share your real-time location with loved ones while outdoors for an extra layer of safety. • Sync your favorite apps and devices – Strava is compatible with thousands of them (Apple Watch, Fitbit, Garmin – you name it). • Join and create challenges – join millions in monthly challenges to chase new goals, collect digital badges and stay accountable. • Embrace the unfiltered – your feed on Strava is filled with real efforts from real people. That’s how we motivate each other. • Whether you’re a world-class athlete or a total beginner, you belong here. Just record and go. Strava includes both a free version and a subscription version with premium features. Strava uses HealthKit to export your Strava activities into the Health app and to read heart rate and biometric data. You can subscribe and pay on the App Store, using your Apple ID. Payment will be charged to your Apple ID at confirmation of purchase. Your subscription will automatically renew unless cancelled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renew may be turned off after purchase by going to the ‘Manage Subscription’ page in settings. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. The subscription will renew at the same cost. Terms of Service: https://www.strava.com/legal/terms Privacy Policy: https://www.strava.com/legal/privacy
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.
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.