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
Photo Album Watch Face
Select your favorite pictures on your phone as a Photo Album Watch Face on your Fitbit or Garmin smartwatch.
$2.49 · In-app purchases
PRICE
$2.49
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.0
1 ratings · Below Average
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 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 Photo Album Watch Face: 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
Provide advanced customization features like overlays, text options, and widget placements.
Assumption to check: Limited customization options for watch faces
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more intuitive photo picker with search and filter options.
Assumption to check: Difficulties in photo selection
Validate with people who use this workflow before building.
Hypothesis 3
Introduce cloud storage for user settings and photo backups.
Assumption to check: No cloud backup for customizations
Validate with people who use this workflow before building.
Hypothesis 4
Introduce freemium features to attract a wider user base.
Assumption to check: High price point for a niche feature
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
Select your favorite pictures on your phone as a Photo Album Watch Face on your Fitbit or Garmin smartwatch. The watch will automatically cycle through the pictures in your Photo Album or you can tap left/right to see the next picture. Please watch the video and read the FAQ: http://www.PhotoAlbumWatchFace.com/ On your watch: tap the "..." button and then the Download button to download new pictures from your phone. The Photo Album Watch Face can be used without connection to your phone. But you need this iPhone app to download new pictures to your watch. Please be patient when you tap the Download button on your watch, the Fitbit connectivity is slow and unreliable. The Fitbit phone app "Sync" step, shown in the video, is very important. Don't skip it and make sure that the watch app Photo Album Watch is closed during the Sync. Please read the FAQ: http://www.PhotoAlbumWatchFace.com/faq/
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
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zustand
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.
