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.
*Apple Editor’s Choice Award Winner*
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.
Kit ready. Verify your email to download it.
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 Fitbod: Gym & Fitness Planner: 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.
*Apple Editor’s Choice Award Winner* Build muscle, gain strength and lose weight with a customized workout plan just for you. Fitbod is the ultimate fitness platform made to help enhance your strength training and endurance through personalized AI workouts. You won’t just get stronger—you’ll do it on your terms. Get optimized weight lifting routines with a workout planner made to help you reach your fitness goals. No gym? No problem. Fitbod adapts to you with home training with no equipment needed. Each training session is custom-built for your fitness level and equipment so you can make the most of every workout. Make lasting progress with Fitbod – your own AI trainer guiding you to your strongest self Get everything from recovery and exercise tracking to AI-generated recommendations tailored to your fitness objectives. Need access to a trainer? Shoot a quick email and get all your strength training questions answered easily. Fitbod lets you save and build your own strength training & endurance routines based on your preferences. Change up sessions, choose your favorite exercises, and maximize gains with the help of our AI workouts. Monitor your progress across multiple devices with integrations that make fitness tracking easy. Build customized workouts that integrate with Apple Health. Hit your next session with Strava, Fitbit, and Apple Watch integration. Fitbod does it all. Explore over 1000 exercises and let Fitbod create a customized workout plan for you. With easy-to-follow instructions and hi-res video walkthroughs you can hit each exercise the right way. Cardio, mobility, or strength training and endurance – Fitbod was made for you. Download today and discover a better way to achieve your fitness goals. Fitbod Features AI-Generated Workouts ◆ Customized workout plan built around you and your fitness goals ◆ AI workouts maximize fitness gains by varying and balancing exercises ◆ Adaptive AI learns from your edits to its workout recommendations ◆ Non-linear periodization to optimize your workouts for sustained progress ◆ Fitness for everyone with advanced, intermediate, and beginner levels ◆ Wide variety of workout modifiers to change up single sessions ◆ Ability to save, build, or use your favorite strength training workouts ◆ Pro fitness trainers available via email for all strength training questions 1000+ Exercises ◆ Hi-res, multi-angle videos of each exercise ◆ Easy-to-understand, detailed exercise instructions with hi-res, multi-angle videos ◆ Search exercises by muscle group, equipment type or keyword ◆ Cardio, mobility, pregnancy-safe exercises and more are available ◆ Consistent updates made to optimize the exercise library Integrations ◆ Integrated with Apple Health to build customized workouts ◆ Integrated with Strava and Fitbit ◆ Available for iOS and Apple Watch After your free trial has ended, this app includes an auto-renewing subscription, which unlocks all premium workouts and features. ◆ Subscription options are either monthly or yearly. ◆ Payment will be charged to your iTunes Account at confirmation of purchase. ◆ Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period ◆ Account will be charged for renewal within 24 hours of the end of the current period, and identify the cost of the renewal ◆ The account will be charged for renewal within 24 hours before the end of the current period. ◆ Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. Privacy Policy: https://www.fitbod.me/privacy-policy Terms of Use: https://www.fitbod.me/terms-conditions California Privacy Rights: https://www.fitbod.me/ccpa-privacy-policy Support: http://fitbod.me/support Join the Fitbod Community: Instagram: instagram.com/fitbodapp/ Twitter: twitter.com/fitbodApp Facebook: facebook.com/fitbodapp Strava: strava.com/clubs/fitbod
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: Limited exercise database leading to frustration.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Subscription model can deter free users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Data syncing issues with HealthKit or Google Fit.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of personalized workout recommendations.
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.
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.