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
Nahtadi
Never miss a prayer
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
6 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/
Preview a sample Build Kit No email needed
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 Nahtadi: map the core Lifestyle 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 more diverse articles and multi-media resources.
Assumption to check: Limited content variety compared to other reference apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement a guided onboarding process and clearer navigation cues.
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to download articles for offline reading.
Assumption to check: Lack of offline access
Validate with people who use this workflow before building.
Hypothesis 4
Add comment sections or forums for user discussions.
Assumption to check: No community interaction 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
Never miss a prayer. Nahtadi gives you accurate Islamic prayer times based on your exact location — with zero ads, zero data collection, and zero internet required. Pay once ($3.99), own it forever. No subscriptions. No upsells. Your salat companion, built by a Muslim developer who believes your worship deserves better than ad-filled apps. WHAT MAKES NAHTADI DIFFERENT: - No Ads, Ever — Your prayer time isn't interrupted by promotions - Complete Privacy — Your location never leaves your device. Verified by Apple: "Data Not Collected" - Tiny & Fast — Under 3MB. Installs in seconds, loads instantly - Works Offline — No internet needed. Perfect for travel, Hajj, or areas with poor connectivity - One-Time Purchase — No subscriptions or hidden costs PRAYER FEATURES: - Accurate times for Fajr, Dhuhr, Asr, Maghrib, and Isha using astronomical algorithms - 9+ calculation methods (ISNA, MWL, EGAS, UQU, and more) - Qibla compass with GPS precision - Hijri calendar with adjustable offset - Countdown timer to next prayer - Smart notifications scheduled 10 days in advance - Automatic timezone and DST adjustments - High latitude support BUILT WITH CARE: Nahtadi is built with Swift and SwiftUI by a Muslim engineer. Every calculation runs on your device. No servers. No APIs. No tracking. Just accurate prayer times, the way it should be.
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
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Zustand
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BUILD KIT DIFFICULTY
Starter
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.
