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
stats.fm for Spotify Music App
Your music, your stats, your story!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
47,482 ratings · Top 15%
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/
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 stats.fm for Spotify Music App: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Your music, your stats, your story! With over 15M+ users worldwide, 115M+ stats about tracks, 18M+ albums, and 8M+ artists, gain insights with stats.fm into your most listened to songs and artists from every period you can imagine! ↪ stats.fm previously went by the name Spotistats Don't feel like waiting until the end of the year to see your Spotify Wrapped? Or don't you like the design and unuseful info given? No problem, stats.fm is here to show you everything you ever wanted and more! With Plus it's even possible to view how many times you've listened to your favorite songs! Discover your listening behavior insights! All your listening history in one place: • Your top tracks, top artists, top albums, and even top genres • When you listen (listening clock and more) • How much you listen (playcounts, minutes/hours streamed) • What type of music (lively, energetic, etc) And many more stats and cool graphs Flex on your friends You can not only view stats for your own account, but you can even search and add your friends and compare your stats with them! Your personal journey Detailed & Accurate stats about your beloved songs, artists, or playlists: • Playcount (how many times and minutes listened) • How popular the song / artist / playlist is on Spotify • For artists/albums you can see your top tracks • What type of music it is (lively, energetic, danceable, instrumental etc) • The top listeners (who listen to the song / artist / album the most) • Your lifetime streaming history of that song / artist / album And many more statistics In short, stats.fm for Spotify is the must-have Spotify companion. Follow us for updates and fun stuff: Twitter - twitter.com/spotistats Discord - discord.gg/spotistats Instagram - instagram.com/statsfm TikTok - tiktok.com/@statsfm Reddit - reddit.com/r/statsfm Note: Some mentioned features require a one-time import of your lifetime streaming history, Spotify is a trademark of Spotify AB. stats.fm is in no way affiliated with Spotify AB. Download stats.fm today and start your unforgettable journey! Note: If you subscribe via Apple, payment will be charged to App Store Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period at the rate of the selected plan. Subscriptions and auto-renewal may be managed by going to App Store Account Settings after purchase. stats.fm Terms & Conditions: https://stats.fm/terms stats.fm Privacy Policy: https://stats.fm/privacy
Written user reviews are not shown here. Check current App Store reviews >
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
Include deeper analytics and insights about listening habits.
Assumption to check: Limited features compared to Spotify itself
Validate with people who use this workflow before building.
Hypothesis 2
Simplify UI and enhance user experience with better layout.
Assumption to check: User interface can be cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Provide more features for users without Spotify, like local music tracking.
Assumption to check: Requires Spotify account for full functionality
Validate with people who use this workflow before building.
Hypothesis 4
Implement a more transparent and valuable subscription model.
Assumption to check: In-app purchases may deter users
Validate with people who use this workflow before building.
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
Zustand
react-native-svg
react-navigation
BUILD KIT DIFFICULTY
Advanced
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.
