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.
App Overview
Vohenn
After a violent storm wrecks his ship, Vohenn awakens on a mysterious island once protected by elemental forces, now consumed by darkness
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
46 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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Build Kit
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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.
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Vohenn: map the core Games 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
Introduce additional content regularly to keep players engaged.
Assumption to check: Limited game levels leading to quick user drop-off
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate varied challenges or mechanics to enhance replayability.
Assumption to check: Potential for repetitive gameplay mechanics
Validate with people who use this workflow before building.
Hypothesis 3
Add social sharing options to encourage community engagement.
Assumption to check: Lack of social features for sharing progress
Validate with people who use this workflow before building.
Hypothesis 4
Offer a free version with limited features to attract more users.
Assumption to check: High price point for casual gamers
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
After a violent storm wrecks his ship, Vohenn awakens on a mysterious island once protected by elemental forces, now consumed by darkness. Guided by echoes of a lost power, he sets out to uncover the secret of the shattered Harmonic Stone and the power that turned the island against itself. Built for mobile from the ground up, Vohenn combines precise 2D action-platforming with Metroidvania-style exploration. Every corner of the island offers hidden rewards, inviting players to explore, uncover its secrets, and shape their own journey. FEATURES - Metroidvania Exploration: Unlock new paths with each ability and uncover the secrets, lore, and dangers hidden across the island. - Non-linear gameplay: Roam freely through regions filled with hidden paths, treasures, and mysteries waiting to be found. - Side Explorations: Discover chests, complete timed challenges, collect special objects, and solve puzzles alongside the main story. - Minimap System: Track your journey on a clean, intuitive map that shows your progress through the world. - Customize Your Style: Level up your main skills and enhance your build with charms, sword upgrades, and spells. - Designed for Mobile: Enjoy precise, fully customizable touch controls built specifically for mobile gameplay. - Gamepad Support: Play seamlessly with your favorite controller. - Cloud Save Support: Sync your progress across devices with both automatic and manual save options. - Premium Experience: No ads. No in-app purchases. Just a complete adventure from start to finish.
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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
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.
