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.
MyRunningTracker is the complete system for all runners:
$3.99
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.
Your first Build Kit is free with a verified email.
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 My Running Tracker: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
MyRunningTracker is the complete system for all runners: *** Plan *** • Design your training sessions with the built in calendar • Specify the main goal of the session (endurance, fast intervals, etc.) • Add as many intervals as you want (distance / duration based, with pace or heart rate goal) • You can use calendar helper to copy sessions plans. All your sessions sync automatically via iCloud to the Apple Watch app. *** Train *** • Start tracking your running sessions with the Apple Watch app. • Haptic coaching: - Get alerts to be as close as possible to session goal (heart rate or pace). - Be notified when interval changes - Be notified when you're midway in the session • Swipe right to display the Now Playing screen • At the end of the session, all tracking results (distance, duration, heart rates, etc.) are saved and synced automatically via iCloud to the macOS app. *** Race *** • Add scheduled official races from the macOS app • During the race, track your run with the Apple Watch app and see if you're on track for your race goal. *** Stats *** • See all your running statistics (total distance per week, month or year). • See all your race results by distance (10K, Half-marathon, Marathon, Trails, etc), all in one screen and see your PR for each distance. *** Running shoes tracker *** • Track your running shoes usage by distance. • Distance usage is automatically updated upon session completion. *** Metrics *** • Enter your personal metrics (VO2 max speed and maximum heart rate) • Suggested pace and heart rate goals will then be tailored exactly for you!
Written user reviews are not shown here. Check current App Store reviews >
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: Inaccurate GPS tracking during runs
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited social features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Minimal customization options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of motivational features
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.
Not assessed in a Build Kit yet.
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.