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
StudyMyTremor
StudyMyTremor let you record, analyze, and track the trembling of your hand, the so-called "Tremor"
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.8
5 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 StudyMyTremor: 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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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 customizable features and personalized insights.
Assumption to check: Limited user engagement due to lack of personalization.
Validate with people who use this workflow before building.
Hypothesis 2
Focus on user feedback to enhance the UI and UX.
Assumption to check: Poor user experience as indicated by low ratings.
Validate with people who use this workflow before building.
Hypothesis 3
Implement interactive graphs and detailed insights.
Assumption to check: Inadequate data visualization for tracking progress.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a freemium model with essential features available for free.
Assumption to check: High price point compared to competitors.
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
StudyMyTremor let you record, analyze, and track the trembling of your hand, the so-called "Tremor". This app uses a highly sophisticated, scientifically proven method to measure, analyze and track humand hand Tremors. The method has been used in more than 30 international clinical studies in the past 20 years. It gives you the ability to assess and quantify your tremor and to keep track of your values. You can upload your results as Text Files to your iCloud Drive for further visualization, or to share and import them to personal EHR apps. For more information, visit www.studymyhealth.com Tremor is the notion for the trembling of a limb. Most prominent is the trembling of the outstretched hand, that everyone is aware of in special situations like excitement or strenuous workouts. Whereas a light trembling of the hand is present in all humans, increased amplitude of the trembling can lead to serious problems in daily life. Increased trembling could be a symptom of a wide variety of diseases, as Parkinson's disease, essential tremor disease, hypothyroidism, or various psychiatric conditions. THIS APP IS NOT INTENDED TO DIAGNOSE, TREAT, OR CURE ANY DISEASE. Note: Tremor severity and frequency are not supported by iHealth; as soon as these values are available we will connect the App to the iHealth ecosystem. iPad Users: Note that the App is not working on the iPad; it does NOT make sense to measure hand tremor using an iPad, the device is too large and heavy to perform the measurements.
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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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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.
