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
Calm Tap: Haptic Focus Aid
Calm Tap: Gentle Haptics for Calm and Focus
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
3 ratings · Top 30%
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 included17 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 Calm Tap: Haptic Focus Aid: map the core Health & Fitness 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 customize haptic patterns and durations more freely.
Assumption to check: Limited focus session customization options
Validate with people who use this workflow before building.
Hypothesis 2
Introduce analytics on focus session effectiveness over time.
Assumption to check: No progress tracking features
Validate with people who use this workflow before building.
Hypothesis 3
Commit to regular updates and user feedback integration.
Assumption to check: Infrequent updates and support
Validate with people who use this workflow before building.
Hypothesis 4
Add social sharing or community challenges to enhance engagement.
Assumption to check: Lack of social or community features
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
Calm Tap: Gentle Haptics for Calm and Focus Calm Tap helps you reset with subtle, customizable vibration sessions—right from your Apple Watch. Just remove the watch, place it in your palm, and start a calming session designed to ease anxiety, support focus, or help you rest. Inspired by PC8 pressure point techniques, Calm Tap gently grounds the nervous system using Apple’s built-in haptics. No electric pulses. No discomfort. How it works: • Remove your Apple Watch and place it in your palm • Choose a 5, 10, or 20-minute session • Adjust vibration intensity and rhythm • Start a session anytime you need to feel grounded Calm Tap is safe, private, and always with you—ideal for anxiety relief, sensory breaks, focus sessions, or sleep support. Disclaimer: Calm Tap is not a medical device and does not provide medical advice or diagnoses. It is not intended to replace professional medical treatment or therapy. Always consult a qualified healthcare provider before making any medical decisions or if you have concerns about your mental or physical health.
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
Zustand
expo-haptics
react-navigation
BUILD KIT DIFFICULTY
Starter
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.
