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.
PLAY FREE MUSIC SCORES
Free · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for MuseScore-Sheet Music & Chords: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
PLAY FREE MUSIC SCORES Whatever instrument you play, whether it's a piano, trumpet, guitar, or harmonica, or kalimba, you will always find notes of excellent quality. • Browse the most extensive sheet music collection from MuseScore. • Access over 1.5 million pieces of FREE sheet music: piano notes, guitar tabs, and scores for most instruments. • Play compositions that suit all tastes: from timeless classics or Christian tunes to anime music transcriptions, movies (OST), or songs from video games (soundtracks). • View and play your favorite sheet music online and offline. • Search for scores with ease. • Find something new to play - scores are added every day. ACCESS LARGE SHEET MUSIC ARCHIVE Searching for sheet music just got easier with MuseScore. • Browse the catalog by instrument: piano, trumpet, violin, percussion, flute, etc. • Filter catalog for suitable compositions, including solo, band, ensemble, or orchestra. • Don't miss scores for the music of composers you know and love, from Bach and Mozart to Morricone, Zimmer, Joe Hisaishi, and Koji Kondo. • Choose your favorite genres: Classical, Pop, Rock, Folk, Jazz, R&B, Funk & Soul, Hip Hop, New Age, World Music. • Add scores to Favorites to easily access them. • Share your favorite sheet music. With MuseScore PRO, you can use Songbook to download and keep your favorite scores offline. Plus, now you can load scores from your device or cloud. PRACTICE WITH MUSESCORE Boost your music reading skills and listen to how scores sound: • Play immediately with the interactive player. • Set the tempo and loop to practice. • Use dedicated Practice Mode to learn music score note-by-note. • Zoom in to see every detail. Boost your progress with MuseScore PRO: • Adjust the volume and visibility of each instrument in every score. • Transpose sheet music into any key. • Locate notes on the piano keyboard much easier with the on-screen keyboard featuring key highlighting. • Auto-scroll to make notes always visible while playing. • Export sheet music to PDF, MIDI, and MP3. • Play on time with metronome. • Listen to music scores with HQ sound. LEARN WITH VIDEO COURSES Fulfill your musical passion by refining your skills on the go. Tap into video lessons and reading materials from credible music tutors with a dedicated MuseScore LEARN subscription. Or bundle courses with premium practicing features with MuseScore ONE plan. • Learn with courses from some of the world's best music instructors. • Master how to play the piano, guitar, violin, trombone, and other instruments. • Study music theory, music composition, and ear training. • We cover all levels, from absolute beginners to advanced musicians. • Watch a free intro to find the teaching style that's right for you. SUPPORT Email: [email protected] COMMUNITY Follow MuseScore and share your feedback. Facebook: https://facebook.com/musescore Twitter: https://twitter.com/musescore Subscription information: • Payment will be charged to iTunes 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 cost of the chosen package • Subscriptions may be managed, and auto-renewal may be turned off by going to your device's Account Settings after purchase • There is no way to cancel your current subscription during its active period • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. * Price are equal to the value that "Apple's App Store Matrix" determines is the equivalent of the subscription price in $USD. You can read our privacy policy at https://musescore.com/legal/privacy You can read our terms of service at https://musescore.com/legal/terms
Written user reviews are not shown here. Check current App Store reviews >
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
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in finding specific scores
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: User-generated content quality varies
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Ads in free version can be intrusive
Validate with people who use this workflow before building.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.