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
Haptics - Test Haptic Feedback
Haptics makes it easy to test variations of the built-in haptic feedback types on iPhone and Apple Watch.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.3
7 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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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.
JavaScript is required to complete mailbox verification.
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 Haptics - Test Haptic Feedback: 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.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 a wider variety of haptic patterns and user-generated content
Assumption to check: Limited haptic patterns available
Validate with people who use this workflow before building.
Hypothesis 2
Enhance UI with animations and better graphics
Assumption to check: User interface is not very engaging
Validate with people who use this workflow before building.
Hypothesis 3
Simplify and clarify the in-app purchase flow
Assumption to check: In-app purchase process can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Prioritize bug fixes and user feedback implementation
Assumption to check: Low user rating due to bugs
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
Haptics makes it easy to test variations of the built-in haptic feedback types on iPhone and Apple Watch. * As featured on 9to5Mac * Developed for Apple platform developers, you can configure the haptic feedback types for testing or viewing of the code without having to create a demo app. Haptics contains these great features: CONFIGURE It’s quick and easy to get started. Simply choose a haptic feedback type and use the built-in controls to select the variation of that haptic feedback you’d like to view. TEST Using your iPhone or Apple Watch, you can test how your configured haptic feedback vibrations will feel to your user. VIEW CODE Haptics provides you the ability to preview what the code will look like for your configuration in real-time. As you update the configuration, the code updates. COPY & SHARE CODE To use the Swift code in your project, you can use the copy and share options. UNIVERSAL PURCHASE Get this app across multiple Apple platforms with a single purchase. If you like this app, I’d really appreciate it if you could take the time to leave a positive review! Having issues? Please get in touch: Email: [email protected] Website: https://adamfoot.dev
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
react-navigation
expo-haptics
axios
shadcn/ui
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.
