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
Pray Watch
Pray Watch is a simple, privacy-focused app that displays the Islamic prayer times in an elegant, modern interface
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
9,141 ratings · Top 5%
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 included17 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 Pray Watch: map the core Reference 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
Allow users to set custom notifications for each prayer.
Assumption to check: Limited customization for prayer notifications.
Validate with people who use this workflow before building.
Hypothesis 2
Improve location accuracy with better GPS integration.
Assumption to check: Inaccurate location detection sometimes.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify settings layout for better user experience.
Assumption to check: Cluttered settings menu.
Validate with people who use this workflow before building.
Hypothesis 4
Add social features for users to share prayer times and events.
Assumption to check: Lack of community features or sharing options.
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
Pray Watch is a simple, privacy-focused app that displays the Islamic prayer times in an elegant, modern interface. Known for its unique green “prayer ring” and other design elements; inspired by Apple’s own native apps. 100% Privacy. Always free. And no ads…ever. We understand the value of a great user experience, so we’ve thoughtfully designed Pray Watch to be quick, easy, and convenient to use…because we use it ourselves! == Features == - Prayer times automatically configured for any city in the world - One-of-a-kind “prayer ring” timer to easily visualize remaining time for prayer - Prayer notifications with option to snooze and remind you later - Set your masjid iqama times to be reminded to join congregational prayers - Set a reminder to pray duha / ishraq prayer - Choose from over 20 calculation methods, or add custom method - Large selection of beautiful adhans from around the world - Wide range of reminder sounds for more discreet notifications - Pre-adhan reminder (to catch current prayer or prepare the for next one) - Variety of Widgets for your Home and Lock Screen - Seamlessly connect to your Apple Watch using iCloud sync - Dynamic Apple Watch face complications - Simple Qibla compass with haptic feedback - on iPhone and Watch - Hijri date displayed on main screens, widgets, and complications - Masjid Locator finds the nearest masjid in your area - Long-press notifications for rich content like qibla compass and timer, without opening the app - Prayer times list includes “Midnight” and “Last Third” to help you plan for tahajjud and qiyam - Monthly Calendar with prayer times table - Islamic Holidays displayed in app, widgets, and watch - Arabic and Turkish language translations - Built-in travel mode to update notifications and calculation method while traveling - without needing to open the app - Optimized for lower data and battery consumption using the latest iOS standards - Optional 24-hour time format - Optional light/dark mode to match your iOS settings - Beautiful colour themes to personalize the app, widgets, and complications - Accessibility support - iPad support
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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
Supabase
@react-navigation/native
react-native-paper
react-native-geo-location
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.
