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
Epic Seven
Play alongside 20 million Heirs!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
49,094 ratings · Top 15%
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 included18 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 Epic Seven: 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
Optimize graphics and animations for better battery performance.
Assumption to check: High battery consumption during gameplay
Validate with people who use this workflow before building.
Hypothesis 2
Introduce a more user-friendly pricing structure and clear value for purchases.
Assumption to check: Frequent in-app purchases can be overwhelming
Validate with people who use this workflow before building.
Hypothesis 3
Simplify UI and provide better onboarding for new users.
Assumption to check: Complex user interface can be confusing for new players
Validate with people who use this workflow before building.
Hypothesis 4
Implement offline mode with sync capabilities for progress.
Assumption to check: Limited offline play options
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
Play alongside 20 million Heirs! An animated RPG world in the palm of your hand And thus began the 7th World... Diche, the Goddess of Life, summoned all of her waning power and once again gave shape to the Guardians and the Heir of the Covenant. "My children, I entrust this world to you." ● Over 1,000 Stories An epic for the modern age. We invite you into the 7th World. ● Fully Playable 2D Animation Dazzling skill animations in battle! Cutscene-quality 2D animated graphics! ● Immersive Turn-Based Strategy RPG No more simple battles! Control skill timing, and outplay your opponents in draft mind games! Experience the thrill of thinking one step ahead. ● Growth, Your Way Design your own strategy with unique Equipment sets and stat combinations tailored to your playstyle. ● World Arena Compete in real-time PvP against 20 million Heirs around the globe! Conquer each season’s evolving meta and rise to the top. ● For Guild and Glory! Full of intense 3v3 battles, Guild Wars are here! Work with your Guild members to become the strongest Guild! Flexible multilingual support: change display and voice language any time! Display: English, Traditional Chinese, Korean, German, French, Spanish, Portuguese Voice: English, Korean [More information about Epic Seven] Brand Page: https://epic7.onstove.com Official Community: https://page.onstove.com/epicseven/global Official Facebook: https://www.facebook.com/EpicSevenGlobal Official Instagram: https://www.instagram.com/epicseven_global/ Official Twitter: https://twitter.com/Epic7_Global *Application Permissions No additional permissions are required.
Written user reviews are not shown here. Check current App Store reviews >
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.
