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.
Top Selling Checkbook App
$4.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Accounts 3 Checkbook: map the core Finance workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Difficulty in tracking multiple accounts seamlessly
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited budget tracking capabilities
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of recurring transaction management
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Top Selling Checkbook App Accounts 3 is an easy to use application to replace your paper checkbook. With the Accounts 3 application, you will have a quicker and more convenient way to track your daily finances. You can schedule transactions, transfer funds, capture photo receipts, reconcile, view reports, export data, print, and much more. All features of the Accounts 3 app are designed to be quick, clean, intuitive, and easy to use. FEATURES * Touch and Face ID Support Use Touch or Face ID to authenticate and launch the app quicker and more conveniently. * Sync Data via iCloud Sync your data across iPhone, iPad, and iPod Touch devices * Universal Binary Designed for iPhone, iPad, and iPod Touch devices. No need to buy separate apps for each device. * Graphs and Reports Review your monthly income vs. expense, spending by category, or income by category summaries with beautiful graphs and reports. * Photo Receipts Capture and store photo receipt as part of a transaction. * AirPrint Support Print reports directly from your iPhone or iPad to any AirPrint-enabled printer. * Recurring Transactions Schedule transactions to repeat weekly, biweekly, monthly, semimonthly, quarterly, biannually, or yearly on a start date that you choose. * Split Transactions Split a transaction among several categories for more precise tracking. * Search Quickly search for transactions and edit them from the same screen or export your search results. * Reconcile Transactions Reconcile by checking off cleared transactions and comparing the actual and outstanding balances against a bank statement. * Smart Autocomplete As you type, a list will show you your previously entered descriptions and corresponding category. Selecting an entry from the list will fill both fields of the transaction. * Auto-increment Check # Field Accounts 3 will suggest the next check number for you based on the previously entered number. If you replace your checkbook, just enter the new starting number and Accounts 3 will auto-increment from there. * Transfers Make a one-time transfer between accounts or set up recurring transfers to automatically repeat. * Export in CSV, QIF & HTML Formats Export transactions via email attachments for used with desktop applications such Numbers, Excel, or MS Money. * Customization Settings & Themes Configurable settings and themes to customize the Accounts 3 application based on your preferences. Themes are now also available in dark mode. * Transaction Sorting/Hiding Sort transactions by date in either ascending or descending order. You can also hide reconciled transactions to keep your current list from being cluttered. * Accounts Reordering Reorder your accounts from the account list in any order you choose. * Accounts Delete Lock Prevents accidental deletion of all the transactions under an account. * Backup / Restore Backup your data for safekeeping via iCloud, Dropbox, or email. Then restore it to your device whenever you need to. * Passcode Security Keep your accounts information private. * FREE Accounts 3 Lite version Please download the Accounts 3 Lite version to try before you buy.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.