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
Nordic Languages
In this app you will get to know the national languages of the Nordic countries: Norwegian, Swedish, Danish, Finnish and Icelandic, and the two official languages: Greenlandic and Faroese
$4.99 · In-app purchases
PRICE
$4.99
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/
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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 Nordic Languages: 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
Add support for more languages or dialects.
Assumption to check: Limited language options may not appeal to a broader audience.
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate quizzes, games, or interactive exercises.
Assumption to check: Lack of interactive content can lead to user disengagement.
Validate with people who use this workflow before building.
Hypothesis 3
Enable user forums or study groups for peer interaction.
Assumption to check: No community features can hinder learning motivation.
Validate with people who use this workflow before building.
Hypothesis 4
Offer a freemium model with basic content available for free.
Assumption to check: Subscription-based model may deter users without free content.
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
In this app you will get to know the national languages of the Nordic countries: Norwegian, Swedish, Danish, Finnish and Icelandic, and the two official languages: Greenlandic and Faroese. The Nordic countries also have several national minority languages. The app contains one of these, North Sami. Two more languages are added, North Frisian and Övdalian. If you want to get to know other minority languages in the Nordic countries, several of these can be found in the two apps Kieli and Get to Know the Sami languages. The apps show how words and simple sentences are written and pronounced. Words and sentences have been chosen to show basic grammar. By showing many examples of basic grammar, curiosity is aroused and it is easier to ask specific questions, which is a great help for learning a new language. Under the All category you can see words and sentences together for all languages. Words and sentences are also available in other languages, this app also includes English and German. Tapping on a word takes you to a dictionary for the individual language.
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
React Navigation
Zustand
react-native-reanimated
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.
