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.
NaviBeat brings your own music library to every Apple device you own: iPhone, iPad, Mac, Apple TV, and Apple Watch, plus CarPlay, as a single Universal Purchase
$5.99 · 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 NaviBeat: 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: 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.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
NaviBeat brings your own music library to every Apple device you own: iPhone, iPad, Mac, Apple TV, and Apple Watch, plus CarPlay, as a single Universal Purchase. Pay once. No subscriptions. No ads. No tracking. No NaviBeat cloud. Your music stays on your own server, exactly where you put it. NaviBeat just plays it, beautifully. ABOUT NAVIDROME NaviBeat is a client for Navidrome, the free and open-source self-hosted music server. Run Navidrome on a NAS, a Raspberry Pi, a VPS or any machine you control, and NaviBeat streams your collection to every Apple device. Airsonic-Advanced, Gonic and any OpenSubsonic server work too. ON iPHONE & iPAD - Browse artists, albums, playlists and genres - Voice and text search with live results - Now Playing with synced lyrics - Background audio, Control Center, AirPlay, Lock Screen and Home Screen widgets - Offline: keep a song, an album, a playlist or a whole artist on the device - Listening Stats: a 24-hour clock, a weekday heatmap, your top artists and songs - Smart Playlists you write yourself, from rating, genre, year, play count and more, kept current and synced across your devices - Start on one device and carry on with another. The device you left pauses itself IN THE CAR - Full CarPlay support, included in the same purchase - Your library, playlists, downloads and Now Playing on the car screen - Voice search that resolves the play command against your own library, not a streaming catalogue, in all 12 of the app's languages ON MAC - A real Mac app, not a phone app in a window - A Mini Player that pins over any window - Keyboard shortcuts, multi-window and directory browsing, desktop widgets - NaviSyncRock: sync your library to a Rockbox player. Your server does the transcoding, art is re-encoded so it renders, and plays sync back. A separate one-time in-app unlock. ON APPLE TV - Cinema-scale artwork and discovery shelves - Recently Played, Most Played, Rediscover, On This Day, Because You Listened To - Voice search via the Siri Remote - Full-screen Now Playing with synced lyrics ON APPLE WATCH - Now Playing complications on any watch face - Music stored on the watch and played from it, so you can run without your iPhone - Downloads pulled straight from your server over Wi-Fi AUDIO - Selectable high-fidelity playback engine - 10-band equalizer with presets - ReplayGain volume normalisation, per track or per album - Gapless playback - Streaming quality set separately for Wi-Fi and cellular, in Opus, AAC and MP3 tiers, or send the original file untouched - Internet radio YOUR LIBRARY, YOUR WAY - Multi-library Navidrome support: All Libraries, a single library, or any subset, filtered on the server - Star ratings synced to your server - Classical music: automatic work and movement grouping - Optional Last.fm and ListenBrainz integration. Scrobbles route through your own server, never directly from the app. - Server Health diagnostics: server type, version, OpenSubsonic extensions, scan status REACHING YOUR SERVER Built for a locked-down homelab. Custom HTTP headers for Cloudflare Access and Authelia, mTLS client certificates, and access over Tailscale all work, on every platform, with no third-party relay in between. TWELVE LANGUAGES English, German, French, Italian, Spanish, Polish, Brazilian Portuguese, Russian, Ukrainian, Serbian, Simplified Chinese, and Traditional Chinese, with an in-app language picker on every platform. REQUIREMENTS NaviBeat requires a running Navidrome server (v0.50 or later, free and open source) accessible from your Apple device. Self-host it on a home NAS, a Raspberry Pi, a VPS, or any machine you control. See navibeat.app for setup. NaviBeat is a third-party client, not affiliated with the Navidrome project. PRIVACY NaviBeat collects zero data. There is no NaviBeat backend, no analytics, no telemetry and no third-party SDKs. Your credentials live in your device's Keychain. Your listening history stays on device. See navibeat.app/privacy.
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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.