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
Private Photo Vault - Pic Safe
The Best and Most Private Photo and Video App for iPhone and iPad
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
1,019,005 ratings · Top 5%
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 included18 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 Private Photo Vault - Pic Safe: 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
The Best and Most Private Photo and Video App for iPhone and iPad. Millions of people trust Private Photo Vault® to keep their photos hidden. Top 100 Photography App in USA, Korea, Japan, Taiwan, India, Italy, Finland, UK, South Africa, Egypt, Mexico, Malaysia, Australia, Hong Kong, France, Ireland, Germany and many more countries. Reviews for Photo Vault®: * * * * * "Wow, I have been wanting a way to hide some of my photos for a while, this is a perfect solution." * * * * * "Exactly what I'm looking for, can organize albums and even 'hide' others that I feel I need to." PROTECT YOUR "SPECIAL" PHOTOS + VIDEOS • Password Protected App Entry • Pin Lock • Pattern/Dot Lock • Password Protected Photo Albums (Keep people out of your private albums) • Break-in Report: Photo + GPS • Decoy Password + Face Down Lock PHOTO MANAGEMENT • Create Albums right in the App • Import/Export from Photo App • iTunes Syncing • Wireless Photo Transfer • Email Photos • Text Message Photos PHOTO VIEWING • Image Gallery • Slideshow • Intuitive Interface just like Photo App VIDEO SUPPORT • Import/Export from Photo App • Watch Videos PRIVATE WEB BROWSER • Browse the Internet Privately • Download Photos directly to the app CLOUD VAULT: • Encrypted Cloud Backup • Space Saver • 100% Private - Yes. Private Photo Vault employees CAN NOT view any of your photos or videos. When you enable Cloud Vault backup in the app, you are required to provide a Cloud Vault Password. Your Cloud Vault Password is never backed up to our servers and used as a secret value that only you know to encrypt/decrypt your files. This means we have NO ability to view your photos. This also means that if you forget your Cloud Vault Password, you will also not be able to view your Cloud Vault data. Please write it down. PREMIUM SUBSCRIPTION Premium will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Payment will be charged to your iTunes Account at confirmation of purchase. You may manage your subscription and turn off auto-renewal by going to your Account Settings after purchase. Terms: https://privatephotovault.com/terms/ Privacy Policy: https://privatephotovault.com/privacy-policy/ NOTE: The free version of the app does not backup your files to Cloud Vault. Please ensure you perform backups of your photos and videos to ensure if you lose your device, your data isn't lost.
Written user reviews are not shown here. Check current App Store reviews >
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 robust cloud backup solutions for added security.
Assumption to check: Users often find it difficult to recover lost photos due to app crashes or data loss
Validate with people who use this workflow before building.
Hypothesis 2
Enhance album management with search and tagging features.
Assumption to check: Limited organizational features for albums and photos
Validate with people who use this workflow before building.
Hypothesis 3
Improve security features with biometric authentication options like Face ID or Touch ID.
Assumption to check: Some users report issues with the passcode lock feature
Validate with people who use this workflow before building.
Hypothesis 4
Clarify subscription benefits and streamline the purchase process.
Assumption to check: In-app purchases can be confusing
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
Zustand
react-navigation
BUILD KIT DIFFICULTY
Intermediate
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.
