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
Stilly
Stay in the moment while stillly handles the camera.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 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 Stilly: 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
Incorporate social features to enhance user interaction.
Assumption to check: Lack of user engagement features such as comments and likes.
Validate with people who use this workflow before building.
Hypothesis 2
Add advanced editing tools for better user experience.
Assumption to check: Limited editing features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a subscription model for premium filters and features.
Assumption to check: No clear monetization strategy beyond initial purchase.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize video processing to improve performance.
Assumption to check: Slow loading times for video rendering.
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
Stay in the moment while stillly handles the camera. Set your iPhone down, choose what should stand out, and start a private capture session. stillly analyzes the scene on your device, watches for clear and distinct opportunities, and keeps a small set of full-resolution photographs for you to review afterward. BUILT FOR REAL LIFE Use stillly for family visits, playtime, pets, celebrations, cooking, performances, and activities that happen within a fixed camera view. PRIVATE BY DESIGN The camera feed never leaves your iPhone. Temporary analysis frames roll away from memory, raw audio is never saved, and only selected photos are stored. There is no account and no cloud media library. SMART, NOT INTRUSIVE Auto mode adapts between quiet scenes and action. Optional intentions prioritize people, kids and pets, or movement without preventing other good moments from being captured. REVIEW WITH CONTEXT Sessions stay organized. Swipe through full-screen moments, compare nearby alternatives, choose the best hero frame, keep favorites, discard misses, and export only what you want to Photos. stillly must remain open while capturing because iOS pauses ordinary camera apps in the background.
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-camera
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.
