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
Five Nights at Freddy's 2
NOTE: Remastered version from the PC version
$2.99 · In-app purchases
OVERALL US RANK
#47
Paid · all categories
REVENUE (Est)
$213K/mo
$122K - $305K
RATING
★ 4.6
12,255 ratings · Top 15%
Evidence scope: #47 is the current overall US Paid chart position. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included15 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 Five Nights at Freddy's 2: 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 new mechanics or levels to enhance replayability.
Assumption to check: Limited gameplay variety leads to repetitive experience.
Validate with people who use this workflow before building.
Hypothesis 2
Implement tutorials or tips to help players manage resources.
Assumption to check: Can be difficult to manage resources effectively.
Validate with people who use this workflow before building.
Hypothesis 3
Prioritize bug testing and provide regular updates.
Assumption to check: Some users report bugs during gameplay.
Validate with people who use this workflow before building.
Hypothesis 4
Add leaderboards or multiplayer modes to encourage competition.
Assumption to check: Lack of social features limits 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
NOTE: Remastered version from the PC version. A device with at least 2 GB of RAM is required for this game to run properly. Welcome back to the new and improved Freddy Fazbear's Pizza! In Five Nights at Freddy's 2, the old and aging animatronics are joined by a new cast of characters. They are kid-friendly, updated with the latest in facial recognition technology, tied into local criminal databases, and promise to put on a safe and entertaining show for kids and grown-ups alike! What could go wrong? As the new security guard working nights, your job is to monitor cameras and make sure nothing goes wrong after-hours. The previous guard has complained about the characters trying to get into the office (he has since been moved to day-shift). So to make your job easier, you've been provided with your very own empty Freddy Fazbear head, which should fool the animatronic characters into leaving you alone if they should accidentally enter your office. As always, Fazbear Entertainment is not responsible for death or dismemberment. NOTE: Interface and audio in English. Subtitles in English, French, German, Dutch, Spanish (Latin America), Italian, Portuguese (Brazil), Russian, Japanese, Chinese (Simplified), Korean. #MadeWithFusion
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.
SUGGESTED BUILD STACK
React Navigation
Expo-Asset
React Native Reanimated
Async Storage
React Native Gesture Handler
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.
