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
Jibreel: Learn Islam App
Jibreel is the easiest way to learn the essential knowledge every Muslim needs - in just 5 minutes a day
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
1,226 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 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 Jibreel: Learn Islam App: 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
Incorporate quizzes and interactive elements to enhance engagement.
Assumption to check: Limited interactivity in learning materials.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more structured categorization system for topics.
Assumption to check: Content organization can be confusing for users.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize their learning paths and track progress more personally.
Assumption to check: Lack of personalization features.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce forums or chat features for user interaction.
Assumption to check: No community features for discussion or questions.
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
Jibreel is the easiest way to learn the essential knowledge every Muslim needs - in just 5 minutes a day. Designed like Duolingo but built for faith, Jibreel turns learning obligatory (fard ‘ayn) knowledge into a simple, step-by-step journey. - How do you pray when you travel? - Can you wipe your socks in wudu? - What are the rules around prayer, menstruation & ghusl? - What are the names of Allah? - What are the rights of your neighbours? - What exactly are the rights of your parents? 99.9% of Muslims don't know the answers to these questions, let alone fulfil them. Yet, we will be questioned about every single one on the day of judgement! - Problem: most Muslims were never taught their fard ‘ayn systematically. - Solution: Jibreel fixes this by guiding you through the essentials in a way that is clear, trustworthy, and easy to follow. -------------------- Based on the famous Hadith Jibreel - the Foundations of Islam - Islam (Actions) - prayer, purification, fasting, zakat, and hajj. - Iman (Belief) - the pillars of faith, from angels to destiny. - Ihsan (Spirituality) - sincerity, excellence, and purifying the heart. -------------------- Why Jibreel? - Bite-sized daily lessons - 5 minutes a day to stay consistent. - Checkpoints & quizzes that build confidence as you learn. - Built for every Muslim - from lifelong Muslims to those refreshing their basics. - Clean, distraction-free design focused on knowledge, not noise. -------------------- Trusted by millions: Jibreel is brought to you by the creators of Pillars, the Muslim prayer app with 1.7M+ users worldwide. Just like Pillars, Jibreel is authentic, beautifully designed, and built to serve the needs of Muslims today. No ads. No distractions. Just you, your deen, and daily progress. It's time to level up and become a better, holistic Muslim! -------------------- Access to Jibreel content and lessons requires a paid subscription. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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
Axios
React Navigation
React Native Audio
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.
