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
FPS Logger
READ BEFORE BUYING: Please expand this description and read the full details of Metal HUD Compatibility on iPhone, iPad and Apple TV.
$0.29
PRICE
$0.29
No 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.
Build your own version
Build Kit
Make this idea yours
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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Make it yours Optional
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 FPS Logger: map the core Developer Tools 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
Allow users to set custom logging intervals beyond preset options.
Assumption to check: Limited customization options for logging intervals.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a feature to export log data to CSV or share via email.
Assumption to check: No option to export logs.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize the app to reduce resource usage and improve performance.
Assumption to check: Poor performance on older devices.
Validate with people who use this workflow before building.
Hypothesis 4
Encourage user reviews and feedback to improve app visibility.
Assumption to check: Lack of user feedback or ratings.
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
READ BEFORE BUYING: Please expand this description and read the full details of Metal HUD Compatibility on iPhone, iPad and Apple TV. FPS Logger for iPhone, iPad and Apple TV is a companion app. It requires FPS Logger for Mac, running on the same Wi-Fi network. You cannot enable Metal Performance HUD locally on iPhone, iPad or Apple TV. Both apps must be open at the same time — to launch apps with Metal HUD and to access the online server. WHAT IT DOES • See apps installed on your device • Launch a game with the Metal Performance HUD enabled • See real-time frame rate, frame time, GPU and memory stats on the device screen • See Metal HUD compatibility for games via online server database • HUD customisation — metric presets, position and scale === REQUIREMENTS FPS Logger on iOS requires iOS 17 or later to enable Metal HUD. Apple TV requires tvOS 26 or later. Wi-Fi is required to connect to a Mac and access the online server. Supported iPhones: • iPhone XR and later • iPhone SE - 2nd Generation (2020) & later • iPhone Air Supported iPads: • iPad - 6th Generation (2018) and later • iPad mini - 5th Generation (2019) and later • iPad Air - 3rd Generation (2019) and later • iPad Pro (2017) and later Supported Apple TV: • Apple TV 4K (1st gen, 2017) & later If you require assistance, please contact support at [email protected]
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
Victory Native
React Navigation
React Native Slider
Expo AV
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.
