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.
TagdiBody builds a gym plan from your level, equipment and days per week, then tells you the exact weight to lift on every set
$9.99
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 TagdiBody: Gym Workout Log: 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.
TagdiBody builds a gym plan from your level, equipment and days per week, then tells you the exact weight to lift on every set. Log a set in two taps. Hit your reps and the weight goes up next time. One-time purchase. No subscription, no account, no ads. EXTRA WORKOUT? YOUR PLAN DOES NOT CARE. Feel like training on a rest day? Start a one-off workout. It counts toward your progress and your streak, but it never advances or reshuffles your plan. Train more without breaking anything. THE WEIGHT PICKS ITSELF. Every lift is prescribed as a weight and a rep range. Hit the top of the range on every set and the weight goes up next session. Land inside it and the weight holds while you chase more reps. Fall short and it steps the weight down straight away, so your next session is one you can finish. Bodyweight and band exercises progress by reps, timed holds by seconds. Coming back after a break? One tap trims your weights so the first week back feels right. A PLAN FROM A FEW QUESTIONS. Experience level, a few numbers, your equipment, days per week, how to split them. TagdiBody generates a complete program built on movement patterns and fits every exercise to what you can actually use. No barbell? You still get a real plan. A REST TIMER THAT KEEPS YOU HONEST. The timer gates your next set, counts down in the Dynamic Island and on the lock screen, and chimes even while your phone is locked. Skip it whenever you want. NO GUILT MECHANICS. Miss a day and the plan simply slides forward. There is no missed-workout mark anywhere in the app. The calendar records what you did, never what you did not. ALSO IN THE BOX - Progress charts with estimated 1RM and personal bests - Swap any exercise, with search and suggestions that match the movement - Choose the exact weekdays you train, or let the plan adapt to you - Heavy and volume effort dials for days you feel different - Bodyweight chart from Apple Health, read only, never stored - Weekly streak, kg or lb, full JSON export of your data PAY ONCE. THAT IS THE WHOLE DEAL. No subscription. No account. No sign-in. No locked features. Everything stays on your phone, backed up to your own iCloud, and you can export all of it any time.
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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: Users often feel overwhelmed by too many features and options.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features limits user engagement.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Some users report bugs with data syncing across devices.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited exercise database can frustrate users.
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.