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
HapticCode
HapticCode is the ultimate tool for iOS developers and designers to create, test, and export rich haptic feedback patterns with precision and ease.
$0.99 · In-app purchases
PRICE
$0.99
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/
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 HapticCode: 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
Competitive pricing with generous free tier
Assumption to check: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Focus on most-requested features first
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Optimize for 60fps, fast load times
Assumption to check: Poor performance
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
HapticCode is the ultimate tool for iOS developers and designers to create, test, and export rich haptic feedback patterns with precision and ease. Whether you're crafting subtle tap feedback or immersive tactile experiences, HapticCode provides a visual, intuitive interface to build Core Haptics patterns — no code required. Key Features: Live Timeline Editor: Visually build and edit haptic events over time, complete with intensity, sharpness, and duration controls. Real-Time Playback: Instantly preview your patterns on-device using Apple’s Core Haptics engine. Waveform Visualizer: See a dynamic, animated waveform to better understand the feel of your haptics. ADSR Envelope Controls: Optionally configure attack, decay, sustain, and release for advanced tactile shaping. Pattern Export: Export as Swift code to integrate directly into Xcode. Export as JSON or plain text for sharing or documentation. Built-in Sharing: Share your custom patterns via AirDrop, WhatsApp, or any other app with a single tap. iCloud-Backed Library: Organize and revisit your saved patterns anytime. Beautiful UI: Inspired by Apple’s design language — smooth gradients, glowing waveforms, and intuitive layout. Ideal For: iOS Developers integrating custom haptics. UX Designers prototyping feedback. Musicians & Creators exploring tactile audio. Privacy First: No IDFA tracking. No personal data collection. HapticCode is built for creators, not marketers. Start feeling your ideas. With HapticCode, your app’s experience goes beyond the screen — into your hands.
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
Supabase
RevenueCat
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.
