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
DISSIDIA DUELLUM FINAL FANTASY
Warriors from the FINAL FANTASY (FF) series assemble in modern-day Tokyo to save the world from destruction in DISSIDIA DUELLUM FINAL FANTASY.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.7
273 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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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/
Preview a sample Build Kit No email needed
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 DISSIDIA DUELLUM FINAL FANTASY: 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
Include more characters and customization options.
Assumption to check: Limited character variety
Validate with people who use this workflow before building.
Hypothesis 2
Implement better matchmaking algorithms.
Assumption to check: Inconsistent matchmaking
Validate with people who use this workflow before building.
Hypothesis 3
Provide an ad-free premium experience.
Assumption to check: Ads detracting from gameplay
Validate with people who use this workflow before building.
Hypothesis 4
Introduce new game modes and challenges.
Assumption to check: Repetitive gameplay mechanics
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
Warriors from the FINAL FANTASY (FF) series assemble in modern-day Tokyo to save the world from destruction in DISSIDIA DUELLUM FINAL FANTASY. Fight in 3-versus-3 battles where two teams fight monsters and clash in a race to defeat the powerful boss faster than the enemy team! ■ LEGENDARY FF CHARACTERS Fight as one of several legendary FF warriors like Warrior of Light, Cloud, Lightning, and more, and take on the role of either Melee, Ranged, Agile, or Support. Choose the character that matches your playstyle and work as a team to take on powerful monsters! ※ More characters will be added over a period of time. ■ EXHILARATING ACTION Acquire various abilities and unleash them in battle to gain the upper hand. Customize your loadout from an array of abilities, including numerous newly drawn illustrations by a stellar team of artists. ■ EASY-TO-LEARN CONTROLS Play with simple controls anywhere and on-the-go! Change the control scheme to one that suits you best from various control settings. ■ MODERN STORY Explore a new DISSIDIA story unfolding in modern-day Tokyo with FINAL FANTASY warriors brought to life with full Japanese voice acting and beautiful cel-shaded graphics. Get a glimpse into their daily lives and interactions with one another by watching chat messenger episodes. ■ CUSTOMIZATION & COMMUNITY Show off your style by outfitting FINAL FANTASY characters in their original looks or new clothes fit to roam around the modern world! Collect original and arranged music tracks from your favorite FF games, edit your profile, chat with other players, and join the ultimate FINAL FANTASY community! Follow us for the latest information: Official Site: https://www.square-enix.com/ddff/en/ Official X: https://x.com/DDFF_EN © SQUARE ENIX/NHN PlayArt CHARACTER DESIGN: MIKI YAMASHITA / TETSUYA NOMURA A purchase of a virtual currency or virtual items in this App grants a license for the virtual currency or virtual items. For full terms of service, please see the Apple Media Services Terms and Conditions (https://www.apple.com/legal/internet-services/itunes/ww/) and TERMS OF SERVICE DISSIDIA DUELLUM FINAL FANTASY (https://www.square-enix.com/ddff/en/terms-of-service/).
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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
Supabase
Zustand
react-native-reanimated
expo-router
BUILD KIT DIFFICULTY
Expert
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.
