App Overview

Boulder Challenge icon

Boulder Challenge

Christian Fenzl · Sports

App to create and share your own boulder problems on every climbing wall / spray wall / training wall / system wall / chaos wall / boulder block by simply taking a picture and easily specifying the definition as detai...

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.3
23 ratings · Top 30%

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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A product spec, screen plans, and build steps for your coding agent.

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What's included17 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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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Boulder Challenge: map the core Sports 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

Add more detailed metrics and analysis on climbs.

Assumption to check: Limited workout tracking features compared to similar apps

Validate with people who use this workflow before building.

Hypothesis 2

Implement better search and filtering options for challenges.

Assumption to check: Difficult to discover and join challenges

Validate with people who use this workflow before building.

Hypothesis 3

Streamline UI and enhance usability with better layouts.

Assumption to check: User interface can feel cluttered

Validate with people who use this workflow before building.

Hypothesis 4

Introduce features for users to connect, share climbs and achievements.

Assumption to check: Lack of social features for community engagement

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

App to create and share your own boulder problems on every climbing wall / spray wall / training wall / system wall / chaos wall / boulder block by simply taking a picture and easily specifying the definition as detailed as you like. - No additional costs like many other apps. Create as many walls and boulders as you like - Search for locations / boulder walls that have already been added or add them yourself - Suitable for all artificial boulder walls and also for saving the beta of your outdoor projects - Take a picture of the wall area you want, select an image that is already stored in the app or from the gallery of your smartphone - Define the start and end of your boulder - Define hand and foot holds (optionally separately and explicitly for left / right if desired) - Optionally define fixed hold sequences by specifying numbering - Various ways of displaying the markers - Smoothly fade out markings to be able to see details "behind" the markings - General descriptive text for a boulder and also possible per hold - Optional specification of the wall angle - Specification of difficulty in Fontainebleau / Hueco V scale or without - Mark boulders that have been resetted to see directly that they are no longer on the wall - Edit, delete and clone boulders - Rate and comment boulders - Submission of individual difficulty ratings with graphical display of the difficulty distribution per boulder - Search for boulders by name, creator, difficulty from / to, rating, climbed, favorite, wall angle, resetted - Sorting of boulders by created on, climbed on, name, difficulty, number of ascents, popularity - Random boulder selection in a certain difficulty range for e.g. warm-up - Lists for your favorite and already climbed boulders - Share boulders outside of the app as an image, direct link and QR code - Display of news per location / boulder wall - Display of the difficulty distribution per location / boulder wall - Display of the locals per location / boulder wall - "Bulletin board" per location / boulder wall - Share locations / boulder walls outside of the app as direct link and QR code - Follow other users and see what they've been up to in your personal news feed - Get score points for your created boulders, climbed boulders or e. g. if one of your boulders has been rated well by others - Optional private profile if your activities should not be visible to others - Send and receive private messages - Automatically kept logbook to easily display your activities for a period of your choice - Export of all your created and climbed boulders in Microsoft Excel format for further individual evaluation Have fun!

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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
React Native
Expo
React Navigation
Axios
React Native Paper
Async Storage
BUILD KIT DIFFICULTY
Intermediate

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.