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
Stylus Tracker
Stylus Tracker is the essential app for serious vinyl collectors who want to maintain optimal sound quality and protect their precious record collection
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
4 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.
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 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.
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 Stylus Tracker: map the core Music 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
Incorporate personalized recommendations and curated playlists.
Assumption to check: Limited song discovery options
Validate with people who use this workflow before building.
Hypothesis 2
Add options to share playlists and songs on social media.
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Hypothesis 3
Introduce a guided onboarding process to help users navigate the app.
Assumption to check: Overwhelming interface for new users
Validate with people who use this workflow before building.
Hypothesis 4
Enhance offline features to allow more music access without internet.
Assumption to check: Limited offline capabilities
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
Stylus Tracker is the essential app for serious vinyl collectors who want to maintain optimal sound quality and protect their precious record collection. This elegant, intuitive tracker helps you monitor the lifespan of your turntable stylus to ensure perfect playback every time. FEATURES Simple Hour Tracking: Easily log listening sessions with just a few taps Beautiful Vinyl-Inspired Design: Enjoy a sleek interface that celebrates vinyl culture Detailed History: View and edit your complete listening history by date Running Total: Keep track of accumulated hours on your current stylus Date Locking: Prevent accidental changes to your tracking start date WHY TRACK YOUR STYLUS? Most styli have a recommended lifespan between 500-1000 hours of play. Using a worn stylus can permanently damage your vinyl collection and compromise sound quality. Stylus Tracker helps you know exactly when it's time for a replacement. Perfect for audiophiles, vinyl collectors, and anyone who values their analog music experience. Keep your records sounding their best with Stylus Tracker – where precision meets passion. "For the love of vinyl, track your stylus."
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
Zustand
axios
react-navigation
expo-av
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.
