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 RunReady! Your daily Readiness Score and training recommendation
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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 RunReady - Running Readiness: 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: Lack of user engagement features like social sharing or challenges
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in tracking long-term progress
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited customization of training plans
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No integration with wearables
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.
Welcome to RunReady! Your daily Readiness Score and training recommendation. Powered entirely by your Apple Watch data. "Should I push it today or take it easy?" Every runner with an Apple Watch has asked this. Your watch tracked your HRV, heart rate, and sleep all night. But in the morning? Silence. No answer. Just raw numbers. RunReady is the running readiness score your Apple Watch should have had from day one. Open the app, see your score, get a clear recommendation: "Easy Z2 run, 40–60 min, HR 137–149." Or: "Rest day. HRV dropped 20% overnight." That's it. No 15 dashboards. No guessing. One score, one plan. YOUR ZONES ARE PROBABLY WRONG Apple calculates your HR zones with 220 minus your age. That formula has no scientific basis for individual runners. The difference? Up to 20 BPM. Your "Zone 2" might actually be Zone 3 meaning every easy run has been too hard. RunReady uses the Karvonen method with your actual max HR from real workouts and your true resting HR measured during sleep. Your Zone 2 finally means YOUR Zone 2. NOT ANOTHER GENERIC RECOVERY SCORE Most readiness apps give you a number and leave you guessing. RunReady tells you what to RUN: • Run type: Easy, Tempo, Intervals, Long Run, or Rest • Duration and pace range • Target HR zone in BPM • What's holding you back: "Sleep 15% below your baseline. Reduce volume" The score respects your weekly training plan. Quality sessions like tempo or intervals are only suggested when your body can actually handle them. YOUR DATA. YOUR BASELINE. NO BLACK BOX. Four metrics, each compared to your personal 30-day average: • HRV: nervous system recovery • Resting HR: cardiovascular stress • Training Load: how hard you pushed vs. your norm • Sleep: duration vs. your personal pattern A score of 80 doesn't mean you're at 80% of some population benchmark. It means YOU are at 80% of YOUR recovery. EVERY RUN, AUTOMATICALLY ANALYZED Your runs are imported from HealthKit and auto-labeled by HR pattern: Easy, Base, Long, Tempo, Intervals, etc. Each run gets zone distribution, an HR chart with cardiac drift, and km splits with pace, heart rate, cadence, and cardiac efficiency. Zero manual tagging. TRENDS THAT ACTUALLY SHOW PROGRESS Monthly dashboard with pace trends by zone. Watch your Z2 pace get faster over months at the same heart rate. That's real fitness progress, not a gamified streak counter. Plus cardiac efficiency trends, cadence tracking, and month-over-month volume comparisons. WAKE UP. GLANCE. LACE UP. Lock Screen widget shows your readiness score before you unlock your phone. The morning ritual runners actually want. ZERO FRICTION No morning HRV readings with your finger on the camera. No "rate your energy 1–10" questionnaires. No food logs. Everything comes from your Apple Watch automatically. Wear it to bed. Wake up. Done. No subscription or in-app purchases needed. All data stays on your device. No accounts, no cloud, no tracking.
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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.