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
Pick Up: Book Tracker
Pick Up - Your Personal Reading Companion
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.8
12 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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What's included
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 Pick Up: Book Tracker: 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
Implement advanced recommendation algorithms based on reading history.
Assumption to check: Limited discovery of new books based on user preferences.
Validate with people who use this workflow before building.
Hypothesis 2
Add social sharing options to connect with friends.
Assumption to check: No social features to share progress with friends.
Validate with people who use this workflow before building.
Hypothesis 3
Enable offline book tracking and viewing.
Assumption to check: Lack of offline functionality.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce achievements and rewards for reading milestones.
Assumption to check: No gamification elements to motivate users.
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
Pick Up - Your Personal Reading Companion Transform the way you read, reflect, and remember with Pick Up — the reading companion for people who want more from every book. SMART BOOK MANAGEMENT • Search by title or scan ISBN barcodes to instantly add books • Track reading progress across multiple books • Organise by status: Reading, Finished, Up Next, or DNF • Set a starting page for books you've already begun • Beautiful cover images and detailed metadata WIDGETS & LIVE READING • Add beautiful Home Screen widgets for your current book and reading streak • See your current book on the Dynamic Island and Lock Screen while reading • Tap straight back into your active session from the Live Activity BOOK ROULETTE • Can't decide what to read next? Spin the slot machine and let fate choose from your Up Next pile • Start reading your chosen book instantly THE SHELF — BOOK RECOMMENDATIONS • Personalised book recommendations based on your library and reading history • Set your mood, preferred length, and genre to get tailored picks • Discover handpicked books from independent authors in the Indie Picks tab • Save picks directly to your Up Next list READING SESSIONS • Track time spent reading with a built-in stopwatch • Set a countdown timer to challenge yourself or stay focused • Ambient sounds while you read: rain, fireplace, ocean, lo-fi, and more • Pause, resume, or finish early with full control • View complete reading history by book • Build consistent reading habits with session tracking CAPTURED THOUGHTS • Record thoughts while reading with one-tap voice capture • Voice-to-text transcription • Write text reflections • Organise thoughts by book with timestamps • Star important thoughts • Review your complete reading journey MONTHLY RECAP • Shareable card with your reading month at a glance • Book covers, pages read, and reading time • Choose your colour theme and share with friends CLOUD SYNC • Seamless sync across all your devices • Automatic cloud backup • Secure Supabase-powered sync • Access your library anywhere DAILY INSPIRATION • Quote of the Day — a fresh reading quote every day on your home screen • Daily quote notification at your chosen time • Share quotes to social media READING STATISTICS • Track reading streaks • Visual progress indicators • Total books, pages, and thoughts • Personalised reading time estimates REMINDERS & NOTIFICATIONS • Customisable daily reading reminders • Choose your days and times • Gentle nudges to keep your streak alive BEAUTIFUL DESIGN • Clean interface with full dark mode support • Themes: Parchment, Ink, Void, Sepia, Marble, and more • Smooth animations • Designed for readers PRIVACY-FIRST • Local-first architecture — your data stays on your device • Optional cloud sync • No tracking, no ads Perfect for avid readers, book clubs, students, and anyone who wants to remember what they read.
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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
Expo
AsyncStorage
react-navigation
redux
BUILD KIT DIFFICULTY
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.
