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.
Training Plans*, Guided Runs**, wellness tips or community challenges — run towards your goals with all the tools you need to start running, keep running and enjoy running more
Free · 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 Nike Run Club: Running Coach: 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 other fitness apps
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Occasional GPS tracking inaccuracies
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase limitations for premium features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User interface can be overwhelming for new users
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.
Training Plans*, Guided Runs**, wellness tips or community challenges — run towards your goals with all the tools you need to start running, keep running and enjoy running more. Treadmill or hitting the trails — if you’re ready to run, our coaches, trainers, athletes and experts have you covered in the Nike Run Club app.. Half marathon training, wellness runs and more await. Move With Us 5k to 10k, Half Marathon or more - health and fitness journeys begin with the support of the right tools and motivation. Fitness tracker, Guided Runs** or Training Plans* - NRC provides you with all you need to run with confidence. Pace yourself with Guided Runs** picked out by NRC running coaches or train with expert Training Plans*. Running workout motivation is yours to gain with guidance from a familiar voice joining you with every Guided Run**. 5k or 10k, marathon and more - NRC has you covered. Stay motivated with the Nike community. Distance training, or just having fun - create and share challenges with friends or join one with the global community. Health and fitness is better with a crew. Get on the starting line with runners from around the world! Mile counter, running coach, wellness tips and more. Whatever moves you want to make, the Nike community is here for it. Reach your goals with NRC. RUN TRACKER: TRACK & STORE RUNS • Running speed, distance tracker, GPS route, elevation and heart rate are tracked and stored • Fitness tracker for distance and more - Track progress towards your goals • Mile counter and mobile coach - Mile counter functionality allows you to record and track your runs • Activity tracker syncs with your Apple watch and supported devices to provide constant support TRAINING PLANS & GUIDED RUNS • Running for beginners or regulars - Coach tips and plans for all levels • NRC Training Plans give you a goal to run toward and the guidance to reach it* • Half Marathon training, 4-Week Get Started Training Plan and more - Select plans that best suit you* • Marathon Training Plan - Begin the ultimate 12-week training journey* • Fitness begins with mindset and recovery tips to connect your mind and body • Treadmill, speed intervals or mindfulness - Get started with our library of Guided Runs** • Fitness motivation from the best of Nike like Eliud Kipchoge with Audio Guided Runs** • Running coach guidance with NRC’s Guided Runs - you’re never running by yourself** • Receive or send friends motivating in-run audio cheers RUN CHALLENGES • 5K to 10K, Half Marathon and beyond - earn badges and trophies for streaks and personal bests • Health app motivation - Reach a new monthly mileage or set a distance goal with friends with NRC’s tracking tools • Run in NRC running challenges or create one and invite your friends - Share via social media or messaging • Health and fitness journey - Track and celebrate progress towards your goals with your worldwide run club MILE COUNTER & SHOE TAGGING • Fitness tracker for all your shoes - Track distance in every pair and let us remind you when it’s time for a new pair • Running speed - Record pace for each pair and learn which ones you run the fastest in Nike Run Club: Your Guide to a Better Run. Download today. - Nike Run Club works with Apple Health to sync workouts and record heart-rate data. Continued use of GPS running in the background can decrease battery life. Apple Music: used to access music library to play music during workouts. *Training Plans available in the US, UK, JP, CN, BR., FR, DE, ES, IT. ** Guided Runs available in select countries.
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.