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
Pravoslavni Kalendar Pro
Pravoslavni Kalendar Pro objedinjuje:
$3.99 · In-app purchases
PRICE
$3.99
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 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 Pravoslavni Kalendar Pro: 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
Incorporate social sharing options and user notifications for events.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 2
Add features for users to customize their calendar view.
Assumption to check: Lack of personalization options
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline capabilities for viewing events.
Assumption to check: No offline access
Validate with people who use this workflow before building.
Hypothesis 4
Enhance search with filters and sorting options.
Assumption to check: Limited search functionality
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
Pravoslavni Kalendar Pro objedinjuje: - Crkveni kalendar, u periodu od 2012. do 2030. godine. sa dnevnim prikazom datuma po gregorijanskom i julijanskom kalendaru, mesečeve mene i vrste posta. Crkveni kalendar automatski prilagođava pokretne praznike i postove za svaku godinu prema Vaskrsu kao i mesečeve mene. - Praznike i krsne slave. Svaki praznik i krsna slava, osim datuma sadrže i ikonu kao i žitije sveca. - Molitvenik, sa više od pedeset molitvi. - Izračunavanje datuma Vaskrsa, kao i katoličkog Uskrsa, jednostavnim unosom godine. - Lista višednevnih i jednodnevnih postova za odabranu godinu sa datumima po novom i starom kalendaru. - Lista svih vašara u Srbiji grupisanih po mesecima. - Lista svih pazarnih dani u Srbiji grupisanih po danu u nedelji. - "Today Widget" - Stikeri za iMessage Pro verzija Pravoslavnog kalendara ne prikazuje reklame i nema ograničenja pri korišćenju. --- The Pravoslavni Kalendar Pro comprises: - The church calendar, for the period between 2012. and 2021., with daily date review according to Gregorian and Julian calendar, the moon phases and fast types. The church calendar automatically adjusts moveable holidays and fasts for every year according to Easter as well as the moon phases. - Holidays and Patron saints day dates. Every Holiday and Patron saints day, besides the date, also contain the saint icon as well as his biography. - Prayer book, with more than fifty prayers. - Easter date calculation, as well as Catholic Easter date, by simply entering the year. - "Today Widget" - Stickers fro iMessage App Pro version of the Pravoslavni Kalendar does not show advertisement and do not have any usage restrictions. Application is in Serbian language.
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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
Redux
React Navigation
Axios
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.
