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
Synaxis
Synaxis is the modern digital resource for Coptic liturgical books
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
15 ratings · Top 15%
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 Synaxis: 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
Implement a download feature for offline reading.
Assumption to check: Limited offline access to spiritual texts
Validate with people who use this workflow before building.
Hypothesis 2
Add filters and sorting options for better navigation.
Assumption to check: Not user-friendly for browsing large categories
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize their reading experience with font size and theme.
Assumption to check: Lack of customization options for users
Validate with people who use this workflow before building.
Hypothesis 4
Offer limited free content to attract users before upselling.
Assumption to check: Subscription model may deter new 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
Synaxis is the modern digital resource for Coptic liturgical books. Specifically designed for presenting slides for your congregation to follow along. Presenter/Presentation mode, a first-class citizen: - No black-bars on the sides, regardless which device you use to mirror - Control presentation without distracting your viewers - Support for Bluetooth presenters/clickers Liturgical content and structure: - Synaxis understands the structure of liturgical units, whether they are variable, optional, or composite, containing several other prayers/hymns. - This means navigation is streamlined for each occasion/season. Made for all the languages of the world: - Synaxis is built to be easily expandable to any number of languages in the diaspora. - More languages are coming soon. Get in touch if you want your language added. Current services and language supported: - Bible: English, Arabic, Coptic, Greek. - Agpia: English (US), English (AU), Coptic, Arabic, French. - Offering of Incense: English (US), English (AU), Coptic, Arabic. - Eucharist: English (US), English (AU), Coptic, Arabic. - Psalmody: English (US), English (AU), Coptic, Arabic. - Pascha: English, Coptic, Arabic. - Basin (Lakane): English, Coptic, Arabic. - Kneeling Prayers: English, Coptic, Arabic. - Unction: English, Coptic, Arabic. - Baptism: English, Coptic, Arabic. - Matrimony: English, Coptic, Arabic. - Funeral: English, Coptic, Arabic.
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
TypeScript
React Navigation
Zustand
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.
