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
BrickLog
BrickLog is the ultimate LEGO collection manager for brick enthusiasts! Keep track of every set you own, create wishlists for future builds, and discover insights about your collection.
$1.99 · In-app purchases
PRICE
$1.99
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 included15 files
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 BrickLog: map the core Lifestyle 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
Include options to share progress on social media or with friends.
Assumption to check: Lack of user engagement features like social sharing
Validate with people who use this workflow before building.
Hypothesis 2
Allow tagging, categorizing, or prioritizing projects.
Assumption to check: Limited project organization features
Validate with people who use this workflow before building.
Hypothesis 3
Integrate push notifications for project deadlines or updates.
Assumption to check: No reminders or notifications for project updates
Validate with people who use this workflow before building.
Hypothesis 4
Provide users with insights based on their project data.
Assumption to check: Absence of analytics on project progress
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
BrickLog is the ultimate LEGO collection manager for brick enthusiasts! Keep track of every set you own, create wishlists for future builds, and discover insights about your collection. One time purchase - no hidden premium features, subscriptions or ads! COLLECTION MANAGEMENT - Add sets by entering set numbers - we fetch all the details - Automatic data from Rebrickable (names, themes, piece counts, images) - Track build status, purchase prices, and dates - Beautiful grid and list views - See minifigures included in the set WISHLIST - Create and manage your LEGO wishlist - Priority system so you remember what you want most - Share wishlists with family for gift ideas - Add custom links to where sets can be purchased STATISTICS & INSIGHTS - Total sets, pieces, and themes in your collection - Build progress tracking - Set size distribution - Financial overview with average costs per set and per brick - Minifigure collection stats - Notable sets (newest, oldest, largest) - Year range of your collection SYNC, IMPORT & EXPORT - iCloud Sync keeps everything up-to-date on all your devices - Export your entire collection to CSV - Import from CSV (supports minimal data - we fill in the rest!) - Complete backup of all your data POWERFUL SEARCH & ORGANIZATION - Search by set name, number, or theme - Multiple sorting options - Use labels for locations, kids collection, or whatever you want to track - Filter on theme and labels ADDITIONAL FEATURES - Duplicate detection when adding sets - Track retired sets - Custom image URLs - Share your collection, wishlist or statistics with fun formatting BEAUTIFUL DESIGN - Modern SwiftUI interface - Card-based statistics visualization - Smooth animations and transitions - Dark mode support - Clean & intuitive YOUR DATA, YOUR DEVICE - All data stored locally on your device - No account required - Privacy-focused Whether you're a casual LEGO fan with a few sets or a serious collector with hundreds, BrickLog makes it easy to organize, track, and share your passion for LEGO! Perfect for: - LEGO collectors and enthusiasts - Parents tracking kids' LEGO sets - Gift planning for birthdays and holidays - Managing large collections - Tracking investment in LEGO sets Download BrickLog today and start building your digital LEGO collection!
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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 Navigation
Zustand
Recharts
Expo
React Native
Firebase
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.
