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
Мир Славян
славянские боги, нежить, символы, руны, имена и их значение, гороскоп, праздники.
$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 included14 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 Мир Славян: 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
Include diverse genres and user-generated content.
Assumption to check: Limited content variety in books apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline reading capabilities.
Assumption to check: Poor offline access to content
Validate with people who use this workflow before building.
Hypothesis 3
Add features for sharing recommendations and reviews.
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 4
Ensure responsive design and consistent UI across all devices.
Assumption to check: Inconsistent user experiences across different devices
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
славянские боги, нежить, символы, руны, имена и их значение, гороскоп, праздники. гой еси! представляем вашему вниманию приложение мир славян. это сборник из десяти связанных приложений: 1) боги славян 2) мифические существа и нежить 3) заговоры и гимны-обращения 4) заповеди богов 5) славяно-арийские символы 6) славянские вэнд-руны 7) буквица 8) славянские имена и их значение 9) славянский гороскоп 10) календарь славянских праздников вся информация тчательно проверена и представлена в максимально достоверном и полном варианте, но могут быть и некоторые неточности, которые впоследствии устраняются. по вашим пожеланиям добавлена возможность менять размер шрифта и цвет фона. добавлена синхронизация по времени с календарем славянских праздников. теперь можно увидеть, какие праздники проходят сегодня. добавлена новая рубрика - буквица (с толкованием слов и имен по буквице). добавлено отображение даты по старому стилю и изменен расчет праздников. все ваши пожелания будут приняты во внимание. не забудьте посмотреть другие мои приложения. приятного пользования!
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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
Supabase
TypeScript
React Navigation
Zustand
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.
