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
Check Write Generator
Stop buying expensive pre-printed checks from your bank! Check Write Generator transforms your iPhone into a complete check printing solution, letting you create professional checks at home for a fraction of the cost.
$2.99 · In-app purchases
PRICE
$2.99
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 Check Write Generator: map the core Business 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 a tutorial or onboarding flow to guide users through app features.
Assumption to check: Lack of user guidance and onboarding for new users
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to export checks as PDF or share via email.
Assumption to check: Limited data export options for generated checks
Validate with people who use this workflow before building.
Hypothesis 3
Provide customizable check designs and templates.
Assumption to check: No customization for check styles or templates
Validate with people who use this workflow before building.
Hypothesis 4
Add a feedback feature for users to report bugs or suggest improvements.
Assumption to check: No feedback mechanism for users to report issues
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
Stop buying expensive pre-printed checks from your bank! Check Write Generator transforms your iPhone into a complete check printing solution, letting you create professional checks at home for a fraction of the cost. Perfect for individuals and small businesses who want to: • Save money on bank-ordered checks • Print checks on demand from anywhere • Keep digital records of all transactions • Maintain complete control over their financial documents Key Features: • Quick Check Creation: Design professional checks in seconds with an intuitive interface • Multiple Account Support: Manage personal and business checking accounts seamlessly • Smart Customization: Add logos, memos, and automatically convert amounts to written words • Wireless Printing: Print directly to any AirPrint-compatible printer or save as PDF • Dark Mode Support: Comfortable viewing in any lighting condition with system-adaptive themes • Complete Privacy: Your banking information stays on your device - never uploaded to servers • Transaction History: Track all your printed checks with searchable records and easy duplicates • MICR Font Support: Uses authentic banking fonts for maximum compatibility Start saving money on checks today with Check Write Generator!
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
React Navigation
React Native Paper
Axios
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.
