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
LatinOpus: Henle
LatinOpus® is the new way to master your Latin vocab
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
3 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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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 LatinOpus: Henle: map the core Education 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 lesson database to include more advanced topics.
Assumption to check: Limited content variety for advanced learners.
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate quizzes and gamification elements to enhance engagement.
Assumption to check: No interactive elements in lessons.
Validate with people who use this workflow before building.
Hypothesis 3
Enable offline downloads for lessons to facilitate learning anywhere.
Assumption to check: Lack of offline access to lessons.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a more robust progress tracking system with clear milestones.
Assumption to check: Inconsistent progress tracking.
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
LatinOpus® is the new way to master your Latin vocab. Save time, and save effort with the ultimate digital flashcards. Practice your Henle flashcards with ease; no more hassle of keeping up with making your own. Choose flashcards by unit or by lesson! Refine your vocab knowledge both Latin to English and English to Latin. Know what you need to practice: LatinOpus® saves the words you want to practice so you can learn them separately! Quiz yourself: Easy self-quizzes keep your highest and lowest score, and their average. Watch your skills improve over time with Statistics. All of your quiz scores are saved, and you can quickly reference your Average score, Highest score and Lowest score. Perfect for Henle Latin First Year students to master their vocabulary. LatinOpus® is Ad-free and tracking-free so you can focus on what matters.
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.
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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.
