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
cursive
Practice to write the alphabet in print and cursive, in both upper and lower cases.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
3 ratings · Top 5%
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 cursive: map the core Productivity 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
Implement advanced handwriting recognition and search features.
Assumption to check: Limited handwriting recognition capabilities.
Validate with people who use this workflow before building.
Hypothesis 2
Add cloud sync to access notes across devices.
Assumption to check: No cloud sync options.
Validate with people who use this workflow before building.
Hypothesis 3
Enable sharing notes with other users for collaborative editing.
Assumption to check: Lack of collaboration features.
Validate with people who use this workflow before building.
Hypothesis 4
Provide export options to PDF or image formats.
Assumption to check: No export options for 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
Practice to write the alphabet in print and cursive, in both upper and lower cases. This is a pocket reference for cursive writing. 1) Uppercase and lowercase letters in both print and cursive are shown in a flashcard format to illustrate the similarities between print and cursive. The visualization helps those who already know ABCs in print, to quickly grasp how cursive is similar in many ways. 2) Video is included in the app to show the strokes, formation, and the subtleties of writing each letter. 3) Words starting with each letter of the alphabet is included to illustrate how each letter is connected to each other. This is especially important for cursive. 4) Practice, practice, practice. Different colors are included to hopefully make the practice of cursive more fun. 5) Doodle. Have fun. Whether you're learning cursive for the first time or just jogging your memory, have fun with cursive. Each person has his or her unique penmanship, use this app to help you find your own style of penmanship. No internet connection required. No in-app purchase and no ads.
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
SQLite
React Navigation
Gesture Handler
Context API
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.
