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
Cinemin by Tinrocket
Capture your imagination with Cinemin! Experience the vibrant world of animation, vividly presented with real-time effects.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
52 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.
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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Combine features and design from your favorite apps.
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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 included19 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 Cinemin by Tinrocket: map the core Photo & Video 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
Implement advanced editing tools and effects.
Assumption to check: Lack of robust editing features compared to desktop software
Validate with people who use this workflow before building.
Hypothesis 2
Provide more export formats and resolution settings.
Assumption to check: Limited export options and quality control
Validate with people who use this workflow before building.
Hypothesis 3
Create comprehensive onboarding and in-app help guides.
Assumption to check: Inadequate user support and tutorials
Validate with people who use this workflow before building.
Hypothesis 4
Optimize video processing and playback for better performance.
Assumption to check: Performance issues with larger video files
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
Capture your imagination with Cinemin! Experience the vibrant world of animation, vividly presented with real-time effects. FEATURES: • Live camera mode to capture photos and videos • Universal: One app works on iPhone, iPad, and Silicon Macs • Preset styles • Photo & video clip editor • Export video at 1080p, 3K, 4K • Cinema Mode” — immersive full-screen live viewer • Save unfiltered photos and videos for editing later • Simple, spontaneous, and fun to use • No generative AI* • From Tinrocket, creator of Waterlogue (App Store Best of 2014), This by Tinrocket (App Store Best of 2016), and Olli (App Store Best of 2017) ABOUT TINROCKET: • Tinrocket is an “indie” app development company devoted to making creative experiences possible for everyone. • We are self-funded! Your support keeps us in business, enabling us to maintain and continually enhance our existing apps while devoting resources to developing innovative new ones. • We’re here to help: If you have a question or need assistance, you can always email us at [email protected] • If you like Cinemin, please consider leaving an App Store review or rating. Every review counts and helps indie developers like ourselves. • Follow @Tinrocket on Instagram or Tinrocket on Facebook for the latest! NOTES: *Tinrocket’s commitment to respect the art community is tangible in the heart of Cinemin. Unlike other applications that use online artwork to train “Generative AI,” often without artists’ permission, Cinemin takes another approach: We built Cinemin the hard way—by first learning to see like an artist. No artists’ work was used to “train” Cinemin into producing its stunning output. Screenshots show higher-resolution output from Cinemin Premium. Privacy Policy: https://www.tinrocket.com/privacy Terms of Use: https://www.tinrocket.com/terms
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 Native
Expo
Supabase
react-navigation
expo-video
react-native-reanimated
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.
