App Overview

R:B Applicatione icon

R:B Applicatione

Ha Nguyen Thi · Reference

A tactical decision trainer for Ultimate Frisbee players who want to read defenders faster, time their cuts smarter, and never get stalled out again.

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
3.5
8 ratings · Top 50%

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.

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What's included16 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

Screen plan

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.

Differentiate and validate

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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Rork plan preview for R:B Applicatione: map the core Reference workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

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

Implement a review system to gather user insights.

Assumption to check: Lack of user reviews and feedback

Validate with people who use this workflow before building.

Hypothesis 2

Expand categories and allow user-defined tags.

Assumption to check: Limited resource categories

Validate with people who use this workflow before building.

Hypothesis 3

Add caching for offline resource viewing.

Assumption to check: No offline access

Validate with people who use this workflow before building.

Hypothesis 4

Incorporate social sharing and user interactions.

Assumption to check: No user engagement features

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

A tactical decision trainer for Ultimate Frisbee players who want to read defenders faster, time their cuts smarter, and never get stalled out again. Most frisbee drills train your legs. This one trains your brain - the split-second decision of when and where to cut based on the defender's shade, the stall count, and the open lane. How it works: You see a top-down tactical field with three players: Handler (H), Cutter (C), and Defender (D). The defender moves based on a behavior script. A live stall metronome counts 1 through 10 with audio cues and haptic ticks. Your job: tap the field at the exact moment and direction you would commit your cut. You are scored on three dimensions: * Spatial - Did you pick the right lane? * Timing - Did you read the defender shift and commit at the right moment? * Stall - Did you commit early enough to avoid the turnover? What's inside: * 6 preset drills: In-Cut, Out-Cut, Deep, Under, Swing, and Dump Cut, each with its own defender behavior and optimal cut vector * Custom drill builder: Design your own scenarios: pick the defender's behavior, set the stall threshold, place handler and cutter starting positions on the field * Drill setup with custom placement: Tap to position handler and cutter exactly where you want before every run * Live stall metronome: Three speeds (Slow / Match / Fast), tonal audio per stall band, optional haptic feedback * Detailed scorecard: Component breakdown for every drill, coaching notes, and replay-ready geometry * History and stats: Track every run, see your score-over-time chart, hit streaks, and identify your weak spots * Learn section: Frisbee fundamentals (game rules, roles, stall count, all four cut types, strategy) plus a randomized quiz to test your knowledge * Daily highlight: A featured drill chosen for you each day to keep training consistent * Streaks: Build a habit. Train every day, watch the streak climb This is not a video game - it's a sports-science-backed training tool. Metronome jitter is sub-16ms. Defender paths are scripted on a fixed timeline so your reaction time is comparable run-over-run. Scoring is transparent: every drill record stores the raw geometry, so you can see exactly why a cut earned the score it did.

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
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BUILD KIT DIFFICULTY
Advanced

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.