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
German Learner's Dictionary
Learn German as a second language with Langenscheidt’s comprehensive German – German Dictionary
$22.99 · In-app purchases
PRICE
$22.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
21 ratings · Top 30%
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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What's included16 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for German Learner's Dictionary: 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
Expand database and offer user submissions.
Assumption to check: Limited vocabulary compared to other dictionaries
Validate with people who use this workflow before building.
Hypothesis 2
Add audio playback for words.
Assumption to check: No audio pronunciation feature
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline mode with downloaded content.
Assumption to check: Poor offline 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
Learn German as a second language with Langenscheidt’s comprehensive German – German Dictionary. Comprehensive German vocabulary with 60,680 entries, 66,000 words and phrases and over 63,000 example sentences. Learn German with Langenscheidt, Germany’s No. 1* dictionary publisher. This app ist the digital equivalent of „Langenscheidt Großwörterbuch Deutsch als Fremdsprache“. THE GERMAN DICTIONARY FOR GERMAN LANGUAGE LEARNERS • German – German entries • Over 65,000 words and phrases • Over 63,000 example sentences and over 30,000 word combinations to actively expand your vocabulary • The latest German vocabulary from all walks of life • Straightforward definitions of German words • Comprehensive grammar und over 2,100 extra hints for correct usage • Specifically designed with learners of German as a second language in mind • Ideal language course companion USE GERMAN DICTIONARY OFFLINE No internet connection required. The German dictionary app also works in flight mode and abroad without roaming fees. HAVE GERMAN WORDS READ ALOUD TO YOU Read-aloud functionality demonstrates the correct pronunciation of German words. This way, you learn and use German words quickly in everyday situations. ---------- SEARCH AND FIND GERMAN WORDS • Full text search • NEW! Search for Anagrams • NEW! Search within entries to narrow search results and search longer entries more quickly • Placeholder search • Search for similar words in case of incorrect spelling COPY AND PASTE The simple copy-and-paste functionality allows you to copy German words and phrases from your browser or email to the clipboard. On opening the German dictionary app, the copied words are automatically translated. YOUR PERSONAL GERMAN VOCABULARY The favourites list allows for quick access of German words you search for frequently: Save important words to your favourites for quick and easy access. SEARCH HISTORY The search history displays the last 100 words you looked up: Access your last searches in the German dictionary by quick-access. ---------- * according to market research institute Media Control GmbH, Langenscheidt ranks #1 in foreign language dictionary sales in Germany.
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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.
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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.
