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.
The "7 Minute Workout" is a research-backed workout program that has become an international hit!
$3.99 · 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.
Rork plan preview for 7 Minute Workout Challenge: 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 variety of workouts and exercises.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features for motivation.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Some users find the timer interface unresponsive.
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.
The "7 Minute Workout" is a research-backed workout program that has become an international hit! Published in the leading research journal ACSM, and then popularized by the NYT, the "7 Minute Workout" is simple but effective. Researchers have selected 12 exercises that are performed for 30 seconds with 10 second rest intervals. This high-intensity training with little rest results in higher daily metabolism and is the equivalent of working out for over an hour - for only slightly longer than 7 minutes. The best part? The exercises are simple to perform, do not require any equipment, and therefore, can be done anywhere! NO MORE EXCUSES. This app takes this research-proven workout and guides you through the process. Further, it tracks your results, and makes it fun by allowing you to unlock rewards as you continue working out. App features include: - stunning design - both male and female trainers that guide you by video, audio, image and text - all content is INCLUDED (no additional charges, and no need for internet connectivity) - track your weight with our weight tracker - track your activity with our activity calendar - workout and unlock various achievements - support for Apple Watch We are dedicated fitness professionals and app developers. We strive to make the highest quality products - if you have any suggestions, feel free to contact us. Our apps are regularly updated at no charge.
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.