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
Tremor Monitor
Tremor Monitor: Measure and Track Hand Tremors
$1.99
PRICE
$1.99
No 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 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 Tremor Monitor: map the core Medical 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
Tremor Monitor: Measure and Track Hand Tremors Tremor Monitor is an innovative app designed to help users measure and track hand tremors using their iPhone's built-in sensors. Key Features: - Real-time Measurement: Instantly measure tremor frequency and amplitude. - Visual Graphs: View live graphs of tremor amplitude and frequency. - Data Saving: Save individual measurements for future reference. - Trend Analysis: Analyze tremor patterns over time with our built-in trend viewer. - Easy Sharing: Export your data as a CSV file for further analysis or to share with healthcare professionals. How It Works: 1. Hold your iPhone steady in your hand. 2. Start the measurement with a single tap. 3. View real-time graphs and data. 4. Save and track your results over time. Tremor Monitor is perfect for: - Individuals monitoring their own tremors - Caregivers tracking tremors for loved ones - Researchers collecting tremor data - Medical professionals seeking a quick, portable tremor assessment tool Please Note: Tremor Monitor is intended for educational and informational purposes only. It is not a medical device and should not be used for diagnosis or treatment of any medical condition. Always consult with a qualified healthcare professional for medical advice. Privacy Focused: We respect your privacy. All data is stored locally on your device and is never shared without your explicit consent. Download Tremor Monitor today and gain insights into hand tremors with precision and ease!
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
Include more tracking options and detailed analytics.
Assumption to check: Poor user ratings due to lack of features
Validate with people who use this workflow before building.
Hypothesis 2
Enable profile customization and settings.
Assumption to check: Limited customization for user profiles
Validate with people who use this workflow before building.
Hypothesis 3
Introduce discussion forums or support options.
Assumption to check: No community or support 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
Redux
Axios
Firebase
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.
