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.
You start as a white belt nobody
$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.
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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.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
You start as a white belt nobody. By the end you can be a world championship black belt. Submission Saga is a top-down pixel-art RPG that mixes Pokémon-style exploration with turn-based Brazilian Jiu-Jitsu. Train at the gym. Level up eight BJJ stats. Unlock new techniques as you climb the belts. Time the submission gauge to get a perfect lock-in and outthink six jiu jitsu archetypes. Every fight is simultaneous-resolution scored by real BJJ points. Outside the gym there's a whole world to explore. Enter tournaments, defeat gym leaders, and fight at the World Championship arena. Forage mushrooms in the forest, fish quiet ponds, and brawl street thugs. Build your own signature submissions with the Custom Move Creator. The supplement shelf is fully stocked. Creatine, pre-workout, and a few bottles with the labels scratched off. KEY FEATURES Climb the Belt Ladder: White, blue, purple, brown, black. Each promotion unlocks new positions, harder opponents, and bigger paydays. 8 Real BJJ Stats: Guard, Passing, Submissions, Escapes, Wrestling, Cardio, Strength, and Leg Entanglements. 90+ Moves, 19 Positions: Open guard sweeps, flying triangles, inside heel hooks. Unlock them by training, completing quests, or winning competitions to level up. Submission Timing Gauge: A precision timing test during combat. Perfect timing gives an increased finish chance. 6 Fighting Archetypes: Wrestler, Guard Player, Pressure Passer, Defensive Specialist, Submission Specialist, All-Rounder. Design your own grappling style. Tournaments and World Championship: Single-elimination brackets and an arena climb for the world title. Business Empire: Açai Stand, Laundromat, your own Training Gym, and more. Three upgrade tiers each. Passive income accrues while you play. Lift and do Cardio for Real Gains: Hit the weight room to push your strength and to build your cardio. Open World Exploration: Explore cities, new gyms, forests, and hidden areas. Rivals, Training Partners, and Pets: A multi-stage rival arc from white belt to black. A purple-belt training buddy at your home gym. Adoptable dog and pets that hang behind you everywhere by. 23 Quests, 50 Achievements, Daily Challenges: Three randomized objectives every day on top of the storyline. The Supplement Shelf: Creatine, pre-workout, açaí bowls. Plus a few suspiciously dosed items.
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.
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.