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
Birdfy
The Bird Side of Life
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.6
1,773 ratings · Top 50%
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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A product spec, screen plans, and build steps for your coding agent.
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What's included18 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 Birdfy: map the core Utilities 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
Enhance database accuracy with user submissions and community feedback.
Assumption to check: Limited bird database leading to incorrect identifications
Validate with people who use this workflow before building.
Hypothesis 2
Optimize algorithms for faster recognition and provide loading indicators.
Assumption to check: Slow image recognition processing
Validate with people who use this workflow before building.
Hypothesis 3
Simplify navigation and prioritize key features for a cleaner experience.
Assumption to check: Cluttered user interface with too many options
Validate with people who use this workflow before building.
Hypothesis 4
Implement responsive design principles to ensure uniform performance across screens.
Assumption to check: Inconsistent user experience across devices
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
The Bird Side of Life 1. Live Stream: Real-time Bird Visitor Tracking - View the device's live feed anytime, anywhere to track birds or animals visiting your backyard. 2. Moment Auto-Capture: Automatically Record Wonderful Moments - The device automatically records short video clips when it detects birds or other creatures, saving key moments without manual operation. You can view these directly within the app. 3. Categorized Collection: Manage Wonderful Clips by Bird Species - Sort videos by bird species based on recognition results or your manual selection, allowing you to easily find, manage, and browse your collected video content. 4. Community Sharing: Explore Other Users' Fascinating Observations - Share or browse wonderful content of bird visits with users worldwide. Enjoy an immersive video stream experience that supports Browse by bird species, expanding your birdwatching horizons. 5. Bird Nesting & Hatching Process Tracking (for Birdhouse Devices) - Automatically identify and record the complete process of birds from nest building, laying eggs, hatching, to fledging. The process is automatically archived by stages, allowing you to browse the entire lifecycle on a timeline. Finally, a merged video is generated, fully presenting the precious process of nesting and raising young. 6. Cloud Services (Optional Paid Premium Features) - AI Recognition Cloud Service: When enabled, it supports more intelligent video analysis and content organization, including: * Accurate Identification: 6000+ bird/animal identification, accurately recognizing species like birds, squirrels, and other visiting animals in your device's footage. * Highlights: Automatically generates daily highlights, selecting the most exciting moments of the day. * Monthly/Annual Recap: The system organizes and generates monthly and annual highlight video compilations for easy review and saving. * Birdfy Data: Records bird visit times, frequency, and species, generating data reports. * Smart Moment List Filtering: Supports quick filtering of interesting bird videos by recognition results, improving Browse efficiency. - MVR Cloud Service * Standard recording is 20 seconds. Subscribing provides longer moment recording times (30 seconds+) and longer moment preservation times. - Collection Cloud Service * Standard users have only 5GB of collection memory. Subscribing increases collection memory to 20GB+.
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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.
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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.
