App Overview

Wurfel – Cube Solver icon

Wurfel – Cube Solver

Florian Preusner · Utilities

Wurfel turns a scrambled cube back into a solved one — and shows you every move along the way

$3.79 · In-app purchases

PRICE
$3.79
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
1 ratings · Top 5%

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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> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for Wurfel – Cube Solver: map the core Utilities 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

Include a tutorial mode to guide new users through the app.

Assumption to check: Lack of detailed instructions for beginners

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to save favorite color configurations.

Assumption to check: Limited customization options for colors

Validate with people who use this workflow before building.

Hypothesis 3

Add functionality to share solutions via social media or clipboard.

Assumption to check: No sharing options for solved steps

Validate with people who use this workflow before building.

Hypothesis 4

Incorporate interactive tutorials for solving techniques.

Assumption to check: No interactive tutorials or help section

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

Wurfel turns a scrambled cube back into a solved one — and shows you every move along the way. Scan and solve the 2×2 (Pocket Cube), the classic 3×3, and the 4×4 (Rubik's Revenge). Point your camera at each of the six faces and Wurfel reads the colors for you. Prefer to enter it by hand? Pick a color and tap it onto any square of a glossy 3D cube you can spin in any direction. Tap Solve and watch the solution play out move by move, with smooth 3D animations and plain-language steps like "rotate the right face clockwise." No accounts. No ads. No internet required. Just you and your cube. WHAT YOU CAN DO • Solve three cube sizes — the 2×2 Pocket Cube, the 3×3, and the 4×4 Rubik's Revenge • Scan your cube with the camera — a guided, six-face flow walks you through it • Or enter it by hand — pick a color and tap it onto each square of a free-spinning 3D cube • Get a complete, step-by-step solution in seconds • Watch each move animate in 3D, with clear text descriptions • Play the whole solution or step forward and back at your own pace • A smart color palette flags mistakes before you solve BUILT TO BE SIMPLE Wurfel validates your cube as you go, dims colors once they're fully placed, and warns you if a color is over-used — so you enter your cube correctly the first time. When everything checks out, the Solve button lights up. WORKS EVERYWHERE • Fully offline — solve anywhere, even with no signal • iPhone and iPad, in light or dark mode • No sign-up, no subscription, no tracking Whether you've never solved a cube or you just want to reset a scramble fast, Wurfel gets you from mixed-up to solved — one clear step at a time. COMING SOON • More cube materials • Beginner and CFOP solution tracks

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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.

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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.