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
B.ROLL - Youth Filter Camera
The lyrical photographer '@bli2s_'
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
33 ratings · Top 15%
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 included19 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 B.ROLL - Youth Filter Camera: 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
Expand filter library and allow user-generated filters.
Assumption to check: Limited filter options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Optimize performance for a wider range of devices.
Assumption to check: Inconsistent performance on older devices
Validate with people who use this workflow before building.
Hypothesis 3
Introduce more robust editing tools and non-destructive editing capabilities.
Assumption to check: Lack of advanced editing features
Validate with people who use this workflow before building.
Hypothesis 4
Offer a freemium model with more accessible premium options.
Assumption to check: Premium filters are behind a paywall
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 lyrical photographer '@bli2s_' Capture your everyday moments like a movie with the photographer’s signature filters. ⏺ Key Features - 25 professional photographer filters provided - Over 100 photos directly edited by the photographer using the app - Capture photos directly with the photographer’s filters - Edit photos/videos with the photographer’s filters and detailed adjustment options ⏺ Preview the Filter Styles - [White] Bright and cozy pure white emotions, with the vibe of a pale and blue winter sea. #snow #winter - [Green] From soft green hues to deep and moody dark greens #Nature #RainySeason - [Blue] Refreshing colors perfect for bright, clear days #Sky #Ocean - [Brown] Warm, calm tones #Cafe #Vintage #Retro - [Sunset] Hues that capture sunsets and city lights #OrangeTint #PurpleHaze #DeepTwilight - [Walk] Cozy afternoon walk vibes #Daily #Routine - [Cinematic] Cinematic moods for a different feel #MovieLike #SpacePhotography * Enable notifications to quickly get updates on new filters. ⏺ View Photos by Filter - Easily check how to use each filter - Download your favorite photos as wallpaper - Take or edit with the exact filter and detailed adjustments applied to the photo ⏺ Convenient Photo/Video Editing - Smooth grain effects - Rounded frame for a viewfinder feel - Detailed adjustments for temperature, tint, saturation, vignette, etc. - Crop and rotate by ratio ◼ Customer Support - Contact us at [email protected] - For service error reports, use the "Settings > Contact Us" menu within the app for faster assistance. ◼ Photographer @bli2s_ Follow the photographer on Instagram for a moment of healing amidst the complexities of daily life. ◼ What is b.roll? Alongside a.roll, which tells the story during film production, b.roll refers to the scenes that enrich the visual storytelling. It’s also used for behind-the-scenes footage to show moments that didn’t make the main content. Find the unseen moments from the photographer’s short Instagram clips here.
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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.
