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.
A great helper for those who have a list of regular payments!
$1.99 · 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 Payment & Expenses Reminder: 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: Users often find expense tracking tedious.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited reminder functionalities.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of detailed reporting features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Users may forget to add transactions.
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.
A great helper for those who have a list of regular payments! PAYMENT CHECKLIST Make a list of your monthly payments, expenses, and income. Mark the paid payments. When you add a new payment, the app repeats it on its own in the following months. In addition to regular payments, you can add a one-time payment to the general list. It is possible to make a partial payment, while maintaining the open amount of debt. There is always a summary table with payment amounts on the main screen.: All - Perfect - Upcoming REMINDERS The main purpose of the app is to remind you about the upcoming payments today. You set the notification time and the deadline for how many days you need to send the notification. PAYMENT HISTORY AND FORWARD PLANNING The app stores data for the past month, for months with outstanding payments, and for several months in advance. You can choose a planning period of 3, 6, 9 or 12 months. In other words, you can plan the payment for several months in advance and the app will notify you about it. WHO IS INTERESTED IN THIS The app will help those who have a lot of current regular payments so as not to forget who has already paid and who has not. It simplifies payment planning and adds reminders so that you don't miss a payment or your debt or loan payment. SEVERAL PLANS The application allows you to keep several payment plans (lists) at the same time, for example, personal and work, several different companies. These plans are independent of each other. iCLOUD All plans are automatically saved to iCloud if it is configured on the device. SHARE A LIST You can send any list to yourself or another person as a file or text. At the same time, it is possible to select payments before sending. You can specify multiple payments and text them to someone as a message. ARCHIVE OF PAST PERIODS If more than a month has passed and all payments are marked as completed, then this month (the list of payments) goes into the archive. The archive is stored on your device until you delete it. additionally · Multiple plans can be combined into one, for example, when receiving a file from someone · The selection of payment amounts immediately shows their amount · It is possible to hide marked payments if there are too many of them in the list. The app has passed the test of time and is used in many countries around the world!
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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.