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.
Turn any song into music you can play.
Free
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 Reprise: Transcribe Music: 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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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: Difficulty in accurately transcribing complex music pieces
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited features for sharing transcriptions
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of offline functionality
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No in-app tutorials or guides
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Turn any song into music you can play. Reprise listens to a recording and writes it out as notes. Paste a link to a performance, import an audio file, or record straight from the microphone — minutes later you have a score you can watch, slow down, transpose and export. SEE EVERY NOTE The notes fall onto a keyboard in time with the music, so you always know what is coming and where your hands go. Tap to play or pause. Swipe across the notes to rewind or skip ahead. Pinch to zoom. Drag along the progress line to land on any moment of the piece. PRACTISE THE HARD PART - Slow the piece down until the passage is playable, then bring the speed back up - Transpose to a key that fits your instrument or your voice - Turn note names on while you are learning, off once you know it - Metronome with adjustable beats per bar - MIX slider — blend between the original recording and the transcribed notes, and hear how close the two are A TRACK FOR EVERY INSTRUMENT Full arrangements come back split into parts. Mute the guitar and play it yourself while the rest keeps going as your backing band, or bring a part back to hear how it fits. Every track gets its own instrument sound, its own transpose, and its own place in the mix — and you can tune the whole thing to any A4 reference. THREE WAYS IN - Link — paste a link to a performance and Reprise transcribes the audio into notes - Audio — bring in an audio file from Files or another app - Record — capture a live performance straight from the microphone TAKE IT ANYWHERE Export MIDI and MusicXML, then open your transcription in MuseScore, Sibelius, Logic, Cubase or any notation app. Everything you make stays in your library. WHO IT IS FOR Players who learn by ear and want the notes in front of them. Teachers building material from a recording. Songwriters catching an idea before it disappears. Anyone who has ever wanted to play a song that was never printed. REPRISE PRO Your first transcriptions are free. PRO unlocks unlimited transcription, the full player and export to MIDI and MusicXML. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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.