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.
Grapla maps Brazilian Jiu-Jitsu into an interconnected knowledge graph of positions, transitions, techniques, submissions, and movements — then gives you the tools to explore it, build on it, and track your progress.
$3.99 · 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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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 Grapla: 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: User engagement drops after initial use
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in integrating with external health data sources
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited social features to motivate users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of personalized fitness plans
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.
Grapla maps Brazilian Jiu-Jitsu into an interconnected knowledge graph of positions, transitions, techniques, submissions, and movements — then gives you the tools to explore it, build on it, and track your progress. Whether you're a white belt building your first game plan or a black belt refining your system, Grapla helps you understand how the whole game fits together. ATLAS — EXPLORE THE KNOWLEDGE GRAPH Browse positions from both perspectives — controlling and escaping, guarding and passing. Every position includes dominance scoring, body mechanics, transitions to neighbouring positions, and available submissions. Follow the connections to see how one position leads to the next, and how dominance shifts along the way. FLOWLAB — BUILD YOUR GAME Create personal techniques by chaining positions, movements, and submissions into named sequences. Build them manually, or use the generator to discover paths you haven't considered — set a starting position, a target submission, or both, and let the graph find routes at your skill level. TRAINING — LOG AND TRACK Record sessions with the positions you drilled, techniques you practised, and submissions you hit or defended. Tag sessions by context, link your coach and training partners, and add per-event notes with role and confidence ratings. Grapla tracks your streaks, training frequency, and per-entity stats automatically — so you can see what you're sharpening and what you're neglecting. PEOPLE AND PLACES Add your coaches, training partners, and gyms. Track who you train with, where you train, and how often. Everyone and everywhere links back to your session history. VAULT — YOUR PERSONAL COLLECTION Bookmark the positions, techniques, and submissions that matter to your game. See your most-trained entities, recently drilled positions, and top attacks from your bookmarked positions — all in one place. BUILT FOR LEARNING Grapla is not a video library. It's a structured, searchable map of jiu-jitsu knowledge — designed to help you think about the art, not just watch it. What Sets Grapla Apart: - Turn-based position graph that teaches strategic flow — every transition is a single, nameable technique - Positions mapped from both player perspectives, not just top-down - Submissions linked to precise anatomical control points - Hundreds of movements and principles explaining WHY techniques work - Works completely offline — access everything at the gym, on the mat, anywhere Perfect for: - BJJ students at all levels, white belt to black belt - Coaches planning classes and drilling sequences - Competitors preparing specific match strategies - Anyone serious about understanding the science behind the art Train smarter. Build your game.
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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.