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
Secret Photo Vault: Keepsafe
Download Keepsafe to join the millions of people who have entrusted over a billion pictures to Keepsafe: the most popular photo locker and album vault app.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
385,615 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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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 Secret Photo Vault: Keepsafe: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Download Keepsafe to join the millions of people who have entrusted over a billion pictures to Keepsafe: the most popular photo locker and album vault app. Keepsafe secures personal photos and videos by locking them down with PIN protection, fingerprint touch ID, and military-grade encryption. It’s the best place for storing your personal pictures and videos. With Keepsafe, you can protect your privacy, secure your photos, and save phone space. Use Keepsafe for: - Preserving special memories - Storing family photos - Protecting copies of your driver’s license, ID cards, and credit cards - Organizing important documents What makes Keepsafe different? • Award-winning photo locker, with over 70 million users • Beautiful design and UX. Easy to upload, view & organize photos • Smooth scrolling for photo viewing on all devices Basic Features: - Phone and tablet support - Simple interface - Easy-to-use PIN pad access - Photo backup - Custom albums - Full-screen and slideshow viewing for photos and videos - Integrated camera for taking photos directly in Keepsafe - Safe Send for sharing pictures for a limited time from Keepsafe - Syncs images and videos in Keepsafe to all of your Keepsafe installations on any platform Keepsafe Premium’s Exclusive Features: Manage Your Photos • Album Lock: Assign individual PIN codes to access particular albums • Private Cloud: Stores up to 10,000 items in Keepsafe • Space Saver: Compresses photos and saves originals to the Cloud • Trash Recovery: Retrieves photos you’ve mistakenly deleted Personalize Keepsafe • Ad-Free: Keeps your photo-viewing experience distraction-free • Custom Album Covers: Sets album thumbnails to a specific image ======================== Help & Support Problems or questions? Visit Keepsafe’s support site at https://support.getkeepsafe.com/hc/en-us Send a ticket from inside Keepsafe (best for troubleshooting) Contact us at [email protected] ======================== Keepsafe Premium Subscription - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the period - Length of subscriptions: one month & one year - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - No cancellation of the current subscription is allowed during active subscription period - Any unused portion of a free period, if offered, will be forfeited when the user purchases a subscription. ======================== Links Terms of Service: https://www.getkeepsafe.com/policies/#terms Privacy: https://www.getkeepsafe.com/policies/#privacy Keepsafe Basic is ad supported: https://youradchoices.com
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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
Offer more free features to entice users.
Assumption to check: Limited free features compared to premium
Validate with people who use this workflow before building.
Hypothesis 2
Create a more intuitive onboarding process.
Assumption to check: Difficult user interface for new users
Validate with people who use this workflow before building.
Hypothesis 3
Optimize image loading and storage management.
Assumption to check: Slow performance with large photo libraries
Validate with people who use this workflow before building.
Hypothesis 4
Integrate editing tools for enhanced photo management.
Assumption to check: Lack of advanced editing features
Validate with people who use this workflow before building.
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-image-picker
Zustand
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.
