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
NaviFin
NaviFin is a premium, native client for your Jellyfin media server, built from the ground up for Apple TV, Mac, iPad, and iPhone
$6.99 · In-app purchases
PRICE
$6.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included16 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 NaviFin: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
No watermarks, premium for HD export only
Assumption to check: Watermarks on free tier
Validate with people who use this workflow before building.
Hypothesis 2
Chunked processing with progress indicator
Assumption to check: Crashes on large files
Validate with people who use this workflow before building.
Hypothesis 3
AI-powered filters and one-tap enhance
Assumption to check: Limited filters
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
NaviFin is a premium, native client for your Jellyfin media server, built from the ground up for Apple TV, Mac, iPad, and iPhone. It is video first and beautiful, with a clean, high-contrast interface inspired by the best of the platform and finished with Liquid Glass where supported. PLAYS ANYTHING A hybrid engine pairs Apple's AVPlayer for pristine native playback with VLC for the exotic formats Jellyfin libraries are full of. MKV, HEVC, surround audio, embedded and external subtitles: NaviFin picks the right engine automatically so you just press play. EVERYWHERE YOU WATCH One purchase covers a true ecosystem app: - Apple TV: a cinematic home with Continue Watching, Top Shelf, and a focus-native interface. - Mac: a single-window app with a glass sidebar, in-window playback, keyboard shortcuts, and offline downloads. - iPad and iPhone: an adaptive layout, Picture in Picture, AirPlay, and offline downloads. MORE THAN A PLAYER - Subtitle, audio track, and playback speed selection in the player. - Skip Intro and Skip Credits, Next Up auto-advance, and trickplay scrubbing. - Music: a full audio player with system Now Playing, lock screen, and background playback. - Live TV with an EPG guide, channels, and recordings. - Offline downloads on iPhone, iPad, and Mac, with watch-state sync back to your server. - Home Screen and Mac widgets. - SyncPlay: watch together, in sync, across devices. YOURS, AND PRIVATE NaviFin talks only to the Jellyfin server you point it at. No accounts with us, no tracking, no ads. It handles real-world setups: reverse proxies, custom access headers, self-signed LAN servers. One time price. No subscription. No in-app purchases. NaviFin is an independent client and is not affiliated with or endorsed by the Jellyfin project. A Jellyfin server is required.
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Screenshots
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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
FFmpeg
Supabase Storage
RevenueCat
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.
