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
CalmEyes: Dark Mode Browser
Ever find yourself scrolling in bed, the bright screen jarring your eyes in a dark room? You're not alone! CalmEyes is the essential Safari Extension for iOS that finally lets you control how websites look on your iPh...
$2.99
PRICE
$2.99
No 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 CalmEyes: Dark Mode Browser: map the core Health & Fitness 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 unique features like customizable themes and eye comfort settings.
Assumption to check: Limited features compared to established browsers
Validate with people who use this workflow before building.
Hypothesis 2
Optimize loading times and resource management.
Assumption to check: Potential performance issues with WebView
Validate with people who use this workflow before building.
Hypothesis 3
Design a more intuitive layout with better navigation.
Assumption to check: User interface may not be user-friendly
Validate with people who use this workflow before building.
Hypothesis 4
Introduce private browsing options and data protection features.
Assumption to check: Lack of privacy features
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
Ever find yourself scrolling in bed, the bright screen jarring your eyes in a dark room? You're not alone! CalmEyes is the essential Safari Extension for iOS that finally lets you control how websites look on your iPhone and iPad, making Browse comfortable and protecting your eyes, especially when you're relaxing with no lights on. Stop squinting at blindingly bright websites! Our popular Dark Mode instantly transforms almost any website into a smooth, dark theme. It's absolutely perfect for those late-night Browse sessions in your bedroom, significantly reducing the harsh light that can strain your eyes and disrupt your sleep. But why stop there? CalmEyes lets you truly personalize your view for ultimate comfort. Easily change website backgrounds and font colors to whatever works best for your eyes in any lighting condition – think soothing sepia for bedtime reading, high-contrast for better clarity, or any combination you like! Plus, you can easily adjust image brightness to tame those overly bright photos that pop up unexpectedly, which can be even more jarring in a dark environment. Switching back is a breeze! We've put an easy-access button right in your Safari toolbar. One tap and you're back to the original website view instantly. It's flexibility right at your fingertips, whether you're in a brightly lit room or unwinding in the dark. And the best part? We believe your Browse is your business. CalmEyes is built with your privacy in mind. The extension works its magic directly on your device within Safari. We don't collect any data about which websites you visit – ever. Your Browse stays private, just like your late-night reading habits. Ready to make Safari Browse a truly comfortable and eye-friendly experience, no matter how dark your room is? Download CalmEyes today and see the difference! Protect your eyes while you browse!
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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
react-navigation
react-native-webview
@react-native-async-storage/async-storage
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.
