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
CSHymns
Join thousands of faithful users in the most loved C&S Hymn app — CSHymns, and discover the complete Cherubim and Seraphim Hymn Book.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.1
15 ratings · Below Average
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.
Build your own version
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 CSHymns: 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
Offer a larger library of hymns and user submissions.
Assumption to check: Limited hymn selection compared to physical hymnals.
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced search filters and tags.
Assumption to check: Search functionality may not yield accurate results.
Validate with people who use this workflow before building.
Hypothesis 3
Ensure design consistency with components and spacing.
Assumption to check: Inconsistent user interface design across screens.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce social features for sharing hymns and discussions.
Assumption to check: Lack of user engagement features (e.g., community sharing).
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
Join thousands of faithful users in the most loved C&S Hymn app — CSHymns, and discover the complete Cherubim and Seraphim Hymn Book. Whether you’re at a service or at home, enjoy the full C&S Hymn experience in Yoruba and English, beautifully designed and loved by believers worldwide. Main Features • Listen & Create Hymns & Music Anywhere: Switch between Yoruba and English versions. Upload your own audio hymns and listen on the go. • Offline Access: Access all hymns without internet connection. • Search & Index: Quickly find hymns by title, category, or number. • Bookmarks & Favorites: Save your favorite hymns for instant access. • Community Features: Share opinions, find help, follow friends, and connect with other worshippers. • Review & Update Hymns: Contribute to improving hymn content through feedback. • Personal Customization: Highlight, copy, and personalize your hymn reading experience. • Collections: Create your own hymn lists for different services — Sunday, Harvest, Naming, and more. Why Choose CSHymns CSHymns combines dual-language hymns, offline access, audio music, sharing, and community interaction, providing a richer spiritual experience wherever you are. It is among the most loved C&S Hymn apps available. Stay Connected • Facebook: SOGApps • Twitter: @sogapps • Website: sogapps.com Download CSHymns now — read, sing, share, and stay inspired!
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
Supabase
Zustand
React Navigation
Tailwind CSS
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.
