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.
Serato DJ, now on iPhone and iPad
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.
Your first Build Kit is free with a verified email.
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 Serato DJ: 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.
Serato DJ, now on iPhone and iPad. Bring the full power of Serato DJ to every moment. Stream millions of songs on Spotify, Apple Music and more. Plug and play on 120+ hardware setups. Play out an idea the second it sparks. Go back-to-back without thinking. Soundtrack the road trip. Jump on the decks at a house party. Wherever the moment finds you, you're ready to mix. DJ WITH APPLE MUSIC, SPOTIFY, AND MORE • Stream and Mix Millions of Songs: DJ with Apple Music, Beatport, SoundCloud, Spotify, and Tidal. Log in to any of them and you're mixing from millions of songs in seconds. • DJ with Your Favorites: Your saved playlists and liked songs appear automatically in the Serato DJ app, so everything you love is ready to mix. GRAB YOUR FAVORITE CRATES TO GO • NEW Serato iOS Transfer: Bring your favorite crates and songs straight from your laptop to your iPhone or iPad. Cue points, beatgrids, and metadata all come along for the ride. • No music? We got you. We've thrown in a free music library so you can jump straight into mixing. PLUG INTO 120+ PIECES OF HARDWARE • DJ with a range of over 120 natively supported DJ controllers, turntables, mixers, and hardware. Choose from AlphaTheta, Hercules DJ, Numark, Pioneer DJ, Rane, Roland, and more. • Serato DJ for iOS covers Digital Vinyl System (DVS) setups too. If you want to scratch music, it's all there. SAME SERATO, DIFFERENT DEVICE • The same reliability you know and trust, now on mobile. Mix with virtual decks, Serato's iconic crates, and an updated library that's easier to use. • See your waveforms in horizontal, vertical and extended layouts on iPhone or iPad. EVERY PRO DJ FEATURE • Stem separation and Stems FX: Isolate vocals, drums, bass and melody in real time, and apply FX to individual stems. • 50+ Built-in FX: Stack up to 6 effects on your music at once. • 4 Channel FX: Filter, Dub Echo, Reverb or Noise for creative mixing. • Performance Pads: Trigger cue points, loops, and FX with pads that feel as responsive as the real thing. • Sampler: Load up to 8 samples into the sampler pad mode, or choose from a range of pre-loaded samples included in the app. • Cue Points & Cue Loops: Set up to 8 cue points on each of your songs for triggering phrases or track preparation. Cue points transfer straight from your Serato DJ library. • Recording: Record high-quality mixes straight to your iPhone or iPad then upload, share and play them back whenever. • PnT Key Sync & Key Shifting: Speed up or slow down your songs without losing the original key, or shift and sync a track's key to match whatever's already playing. • Quantize: Set your beatgrids, flip Quantize on, and stay locked in time, every time. Free to start. When you're ready for more, upgrade to Serato DJ Suite for Stems FX, over 50+ built-in effects, every waveform view, expanded hardware support, and more across the Serato range.
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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: Can't play offline
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Algorithm doesn't understand taste
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Shuffle-only on free tier
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.
Not assessed in a Build Kit yet.
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.