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
Zoya: Halal Investing App
Take the guesswork out of halal investing with Zoya, the all-in-one finance app built for Muslims
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
1,232 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 Zoya: Halal Investing App: map the core Finance workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Take the guesswork out of halal investing with Zoya, the all-in-one finance app built for Muslims. BEST-IN-CLASS SHARIAH SCREENING - Access shariah compliance ratings of thousands of stocks worldwide, for free! - Dive into the details with in-depth shariah compliance reports for more informed decision-making - Filter the underlying holdings of thousands of ETFs and mutual funds based on their shariah compliance status - Discover shariah-compliant alternatives to non-compliant stocks - Stay ahead with email alerts on compliance status updates INVESTING MADE EASY - Open a brokerage account and start investing commission-free with as little as $1 - Monitor the compliance status of your investments in real-time - Already have a brokerage account? Connect it to your Zoya account for seamless portfolio tracking GIVE ZAKAT WITH PEACE OF MIND - Import your holdings to automate zakat calculation - Securely donate to zakat-eligible charities through various payment methods, including credit card, Apple Pay/Google Pay, PayPal, Venmo, stock transfer, DAF, crypto, and bank transfer TRUSTED BY 400,000+ INVESTORS “Zoya is revolutionizing halal investing by empowering Muslims to make conscious investment decisions.” - Safeer “Zoya has made halal investing so much easier, cheaper, and overall wonderful!” - R.S. “I have seen many attempts to do what you have beautifully done with this app.” - Malek “Love this app! My go-to guide for halal investing!” - Hassan “Thank God we have Zoya to help take the guesswork out of Shariah compliance assessment of individual stocks.” - Yazin ALWAYS IMPROVING We have some great features planned on our roadmap and would appreciate your feedback. To report a bug, or even suggest an improvement, shoot us an email at [email protected]. Terms of Use: https://app.zoya.finance/legal/terms-of-use.html Privacy Policy: https://app.zoya.finance/legal/privacy-policy.html
Written user reviews are not shown here. Check current App Store reviews >
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 investment categories and options.
Assumption to check: Limited investment options compared to other platforms
Validate with people who use this workflow before building.
Hypothesis 2
Offer more flexible pricing plans.
Assumption to check: Subscription model can be expensive for casual users
Validate with people who use this workflow before building.
Hypothesis 3
Integrate real-time stock market data.
Assumption to check: Lack of real-time data updates
Validate with people who use this workflow before building.
Hypothesis 4
Enhance onboarding process with tutorials and guides.
Assumption to check: User onboarding can be confusing
Validate with people who use this workflow before building.
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
Axios
@react-navigation/native
react-native-paper
Supabase
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.
