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.
Gym Gorilla: The No-Nonsense Workout Tracker
$4.99 · 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 Gym Gorilla: Workout 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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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
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited exercise library for tracking workouts
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No integration with wearables
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inadequate nutrition tracking
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.
Gym Gorilla: The No-Nonsense Workout Tracker Track your workouts without distractions. Gym Gorilla is a gym and strength training app built for lifters who want clean tracking, real progress, and no subscriptions. Built by Lifters, for Lifters Gym Gorilla was created out of frustration with workout apps that hide features behind subscriptions, remove functionality, or lock away workout history. This app is built by someone who actually trains and understands what matters in the gym, not what sells recurring plans. Focused Training, No Clutter Gym Gorilla delivers exactly what serious lifters need: • Fast, intuitive workout tracking • Complete workout history stored on your device • Clear progress and volume insights No noise. No distractions. Just training. Train Smarter New features help you get more out of every session: • AI Coach provides workout suggestions using Apple’s built-in Foundation models • HealthKit integration syncs workouts to the Health app automatically • Exercise Volume History with trend lines to compare past and current workouts • Streamlined progress view showing volume progress by muscle group These features support your training without getting in the way. What You Won’t Find • No subscriptions — pay once • No account required — start immediately • No hidden costs — no ads, no data selling Features • Create and save custom workouts and templates • Track sets, reps, and weights with minimal taps • Add or adjust exercises during a workout • Review full workout history and lifting stats • Analyze strength and volume trends over time • Rate workouts and attach photos • Share clean workout summaries Download Gym Gorilla and experience simple, powerful workout tracking built for real training. Gym Gorilla — because your gains deserve better tracking.
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.