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
Auribook
Auribook is a focused, standalone Apple Watch app for listening to audiobooks and podcasts on the go.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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 Auribook: map the core Books 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
Focus on niche audiobooks and user-generated content.
Assumption to check: Limited selection of audiobooks compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Offer a generous free trial to incentivize sign-ups.
Assumption to check: Paywall may deter users from trying the app
Validate with people who use this workflow before building.
Hypothesis 3
Integrate social sharing and user reviews.
Assumption to check: Lack of social features for sharing recommendations
Validate with people who use this workflow before building.
Hypothesis 4
Ensure smooth audio streaming and offline capabilities.
Assumption to check: Inconsistent playback experience
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
Auribook is a focused, standalone Apple Watch app for listening to audiobooks and podcasts on the go. Discover and download classic Public Domain audiobooks right from your watch, no server required. Or connect to your own Audiobookshelf server to browse your library, sync progress, and download for offline listening. Why you will love it - Robust offline playback: Download reliably to Apple Watch for runs, commutes, flights, and phone-free moments. - Public Domain library: Browse a growing collection of free classics across multiple languages, with curated lists and new titles added regularly. - Podcasts: Browse shows and episodes, filter for unplayed items, sort your feed, and download episodes for offline listening. - Complications: Add Auribook to your watch face for quick controls, jump back to your last title, or see progress at a glance. - Seamless syncing: Start on your watch and continue elsewhere. Progress stays in sync with your Audiobookshelf server. - Sleep timer: Set a timer to pause playback automatically. - Direct connection: Point Auribook to your Audiobookshelf server URL and enjoy your library on your terms. - Private by design: No analytics, no tracking, no third parties. Your listening stays with you. - Simple setup: Log in once, then get straight to your books. - Clean experience: A calm, watch-first interface that keeps the story front and center. Built with the community in mind Auribook is a contribution to the open-source Audiobookshelf ecosystem, created for people who want a phone-free listening experience on Apple Watch. Requirements - For personal libraries: Access to an Audiobookshelf server and a valid server URL. - Auribook is not a hosting service. It is a companion app for the library you manage. - Public Domain library access is available via an optional in-app purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Written user reviews are not shown here. Check current App Store reviews >
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
Expo
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react-native-reanimated
@supabase/supabase-js
BUILD KIT DIFFICULTY
Intermediate
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.
