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.
Stay focused on your form, not your phone.
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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 Pilates Timer: 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 user customization for exercises and timer settings.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No social features or community engagement.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of progress tracking and analytics.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic UI without much personalization.
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.
Stay focused on your form, not your phone. Pilates Timer is a simple, elegant interval timer designed specifically for mat Pilates and floor workouts. Run your workouts from Apple Watch with haptic alerts—you'll always know when to transition without breaking your flow. REQUIRES APPLE WATCH This app is designed to be used with Apple Watch. Create and manage routines on your iPhone, then run hands-free workouts from your wrist. The Watch app delivers haptic alerts so you can focus entirely on your practice. KEY FEATURES • Hands-Free Workouts on Apple Watch Start workouts directly from your wrist. Large countdown display shows the current exercise name, and haptic taps alert you before each transition—no need to look at any screen. • Pre-Built Routines Start immediately with 6 classic Pilates routines: Classical Mat, Reformer-Inspired, Athletic Mat, Flow & Stretch, Core + Mobility, and Power Mat. • Custom Intervals Build your own routines with named intervals. "Pelvic Curl" for 4 minutes, "Rolling Like a Ball" for 3 minutes—you name it. • 10-Second Haptic Warning Feel a gentle tap on your wrist before each interval ends. Finish your reps and prepare for the next exercise without watching the clock. • iCloud Sync Your routines sync automatically between iPhone and Apple Watch. • Share Routines Send your favorite routines to friends, students, or clients via AirDrop, Messages, or any sharing method. • Workout History Track completed sessions and see your progress over time. DESIGNED FOR PILATES Unlike generic interval timers, Pilates Timer understands your workout. Named intervals mean you see "Single Leg Circle" on your watch—not just a number. The dark interface won't distract during practice, and the screen stays awake so you never miss a cue. Whether you're a Pilates instructor timing classes or a practitioner flowing through mat sequences at home, Pilates Timer keeps you moving.
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.