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
Neukirchener Kalender 2026
Die tägliche Art zu glauben
$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 included15 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 Neukirchener Kalender 2026: 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
Allow users to customize event colors and formats.
Assumption to check: Limited customization options for events and notes.
Validate with people who use this workflow before building.
Hypothesis 2
Implement notification system for upcoming events.
Assumption to check: No reminders or notifications for events.
Validate with people who use this workflow before building.
Hypothesis 3
Add filtering and sorting options for easier note management.
Assumption to check: Lack of filtering options for notes.
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline data access to enhance usability.
Assumption to check: No offline access to events and notes.
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
Die tägliche Art zu glauben Der Neukirchener Kalender ist der bekannteste Andachtskalender im deutschen Sprachraum. Mehr als 200 Verfasserinnen und Verfasser stehen für die lebendige Vielfalt und Bandbreite der behandelten Themen. Sie schreiben für eine weltweite Leserschaft. Das enthält die App: - Täglicher Bibelvers und Auslegung - Heute-Ansicht mit Datum, Wochentag, Bibelvers, Auslegung - Geschichten aus dem Leben, Meditationen und Gebete - Hinweise auf Lieder und interessante Literatur - Bibelstellenverzeichnis - Bequeme Tagesauswahl mit der Datum-Picker-Funktion - Tägliche Erinnerung - Link zu einer externen Online-Bibel* - Notizfunktion für persönliche Gedanken - Suchfunktion, um Texte wiederzufinden - Teilen-Funktion * (Facebook, Email und SMS) - Verzeichnis der Autorinnen und Autoren - Anzeige der Texte eines Autor *Bei diesen Funktionen ist eine Internetverbindung Voraussetzung
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
Zustand
Supabase
@react-navigation/native
react-native-paper
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.
