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
ReefLens: Reef & Scuba Camera
ReefLens is a professional camera app that fixes blue light for reef aquariums and underwater diving.
$6.99 · In-app purchases
PRICE
$6.99
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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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 ReefLens: Reef & Scuba 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
Include more filters, adjustments, and non-destructive editing options.
Assumption to check: Limited editing features for advanced users
Validate with people who use this workflow before building.
Hypothesis 2
Integrate a community gallery for users to share their work.
Assumption to check: Lack of community features for sharing and feedback
Validate with people who use this workflow before building.
Hypothesis 3
Implement cloud storage options for user photos and edits.
Assumption to check: No cloud backup for photos
Validate with people who use this workflow before building.
Hypothesis 4
Enable batch editing for multiple photos at once.
Assumption to check: No batch editing capabilities
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
ReefLens is a professional camera app that fixes blue light for reef aquariums and underwater diving. Aquarium LED lighting and underwater depth can create strong blue color casts that hide the natural beauty of corals, fish, and reef scenes. ReefLens restores more natural colors in real time, so what you see is much closer to what you capture. Now you can also edit previously taken photos from your library and fine-tune captured images after shooting, using the same reef-focused controls available during live preview. Designed for reef tanks, coral photography, scuba diving, and freediving, ReefLens helps you capture more accurate reef colors in both photos and videos with one-tap lens presets and manual adjustments. Built for Aquarium Reef Tanks ReefLens is optimized for shooting through aquarium glass and under strong LED lighting. • Fix blue and actinic light instantly • Restore more natural coral and fish colors • Lens presets inspired by real reef filters • Macro mode for coral details • Photo and video capture with live preview Perfect for home reef tanks, coral photography, and aquarium videos. Designed for Underwater Scuba and Freediving ReefLens also works underwater for scuba divers and freedivers who want more natural reef colors. • Underwater color correction • Blue light reduction for depth shooting • Reef and coral-focused presets • Macro shooting for marine life • Smooth video recording Capture reefs, corals, and underwater scenes with more accurate colors. One-Tap Reef Lens Presets Choose a lens and start shooting instantly. No complex setup required. • Yellow Coral Lens • Gradual Yellow Reef Lens • Orange Reef Lens • Gradual Reef Lens • Gradual Pink Coral Lens • CPL Lens Simulation • Star Lens Effect • Macro Lens Mode All presets apply live to both preview and capture. Manual Controls for Professionals Fine-tune your shots when needed. • Brightness adjustment • Contrast control • Sharpness control • Saturation control • Temperature adjustment • Tint adjustment • Red, Green, and Blue channel controls • Zoom in and zoom out • Touch to focus Everything updates in real time during capture, and the same controls are available for editing captured and imported photos. Edit Captured and Existing Photos ReefLens is not limited to live capture. You can now edit photos after shooting and import existing images from your Photo Library using the same color controls available in the live camera experience. • Edit newly captured photos after shooting • Import and edit previously taken photos • Adjust brightness, contrast, sharpness, saturation, temperature, tint, and RGB channels • Keep a consistent ReefLens editing workflow across live capture and photo editing Photo and Video Capture ReefLens applies the same visual approach to preview, photos, and videos. • High-quality photo capture • Video recording with live filters • Post-capture photo editing • Photo Library import for editing existing images • In-app gallery • Share and export easily Who is ReefLens for? • Reef aquarium hobbyists • Coral photographers • Scuba divers and freedivers • Underwater content creators One app. One problem solved. Better reef colors, wherever you shoot. ReefLens is a paid professional tool. No ads. No subscriptions. No locked features. Buy once and use all features forever. Privacy-Friendly Your data stays on your device. No accounts, no cloud sync, and no external servers. Your photos and videos stay on your device. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy and Terms Access our Privacy Policy and Terms and Conditions directly through the app or online. https://emkapps.com/reeflens-privacy-policy/ https://emkapps.com/reeflens-termsconditions/
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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
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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.
