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
Haptic Calm
Haptic Calm is an innovative tactile meditation app that uses carefully designed vibration feedback to guide your breathing rhythm and help you achieve deep relaxation.
$0.29 · In-app purchases
PRICE
$0.29
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.
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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 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/
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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 Haptic Calm: 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
Enhance library with more diverse meditation styles and durations.
Assumption to check: Limited guided session variety
Validate with people who use this workflow before building.
Hypothesis 2
Implement gamification elements and reminders for daily use.
Assumption to check: User engagement drops post-purchase
Validate with people who use this workflow before building.
Hypothesis 3
Introduce user customization options for sessions and themes.
Assumption to check: Lack of personalization
Validate with people who use this workflow before building.
Hypothesis 4
Add a dashboard for tracking meditation streaks and improvements.
Assumption to check: Inadequate progress tracking
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
Haptic Calm is an innovative tactile meditation app that uses carefully designed vibration feedback to guide your breathing rhythm and help you achieve deep relaxation. 【CORE FEATURES】 • Haptic Breathing Guide - Feel the rhythm of inhale and exhale through your fingertips • 5 Preset Haptic Modes - Breath, Heartbeat, Purr, Tide, Rain • Today's Exploration - Generate a unique "Mystery" haptic style every day • Immersive Visuals - Dynamic breathing circle and particle animations • Pro Feature: Custom Breathing Rhythm - Adjust inhale/exhale duration (2-10 seconds) & Intensity Control - 0-200% haptic strength adjustment 【TODAY'S EXPLORATION · MYSTERY】 Every exploration generates a completely original haptic breathing style — unique vibration curves, intensity patterns, and tactile textures. Name and save your favorites. A new discovery awaits each day. 【HOW TO USE】 Simply hold your phone and press your thumb on the center of the screen. Follow the visual cues and haptic feedback to naturally adjust your breathing. Release to end. 【PERFECT FOR】 • Quick relaxation during work breaks • Bedtime breathing meditation • Instant calm during anxious moments • Focus training 【PRIVACY FIRST】 • No account required • No personal data collected • Works completely offline • No ads Let touch become your bridge to inner peace.
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-navigation/native
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@react-native-community/slider
react-native-haptic-feedback
zustand
axios
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.
