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
Quran Plus - Islamic Calendar
“Quran Plus” is ALL ABOUT THE ISLAMIC TRADITION !
$1.99 · In-app purchases
PRICE
$1.99
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
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A product spec, screen plans, and build steps for your coding agent.
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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 Quran Plus - Islamic Calendar: map the core Books 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 social sharing, discussion boards, or user-generated content.
Assumption to check: Limited user engagement features such as community interaction.
Validate with people who use this workflow before building.
Hypothesis 2
Clearly outline premium features and provide a free trial.
Assumption to check: In-app purchases may confuse users with unclear subscription benefits.
Validate with people who use this workflow before building.
Hypothesis 3
Enable offline access to core content.
Assumption to check: Lack of offline access to Quran text or events.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize themes and layouts.
Assumption to check: No personalization options for users.
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
“Quran Plus” is ALL ABOUT THE ISLAMIC TRADITION ! • QURAN IN 12 LANGUAGES: Arabic English ( 4 Translations ) Japanese Russian Chinese Malay French German Indonesian Turkish Spanish Korean • FIND THE DIRECTION OF KAABA IN MECCA • ISLAMIC CALENDAR ( HIJRI ) • BONUS 3D PLANETS Sun Earth ( Day ) Earth ( Night ) Moon Mercury Venus Mars Jupiter Saturn Uranus Neptune • 3D EARTH-MOON DEMO This gives you a clear mind of the relative positions of the earth and the moon. • CHANGE BETWEEN 10 LANGUAGES WITHIN THE APP INSTANTLY Arabic English Japanese Russian Chinese Malay French German Indonesian Korean MORE DETAILS: • The Kaaba Locator not only tells you the direction of the Kaaba in Mecca, but also show the distance between you and the Kaaba. • 3D Planets are three dimensional planets in the solar system. It contains statistics of the plants, such as radius, mass, surface area, surface temperature, orbital period, rotation period and so on. Because they are three dimensional objects, you are free to play with them on your fingertips with zooming in/out, rotating the object. • 3D Earth-Moon gives you clear picture of what their relative positions are. You can also make the earth transparent to observe the moon phases easily. • The Islamic Calendar is calculated astronomically. The error is within seconds.The new Moon as well as the next new moon are both available. The time shown here is your local time. The daylight saving time adjustment is considered too. so it gets easy to check when the new moon happens.
Written user reviews are not shown here. Check current App Store reviews >
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
Axios
React Navigation
React Native Paper
TypeScript
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.
