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.
Three seconds a bill
$2.99 · 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.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
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 DayCost Pro - Personal Finance: 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 find manual entry tedious and prone to errors.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited analytics and reporting features.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inadequate budgeting tools.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High subscription costs for some features.
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.
Three seconds a bill. Fast, Security and Easy to use is our aim, and iOS notification center widget. Look at other people how to say: ◎ I just downloaded this app and I am so loving it already! It seems easy to use but I need to explore it more. ◎ Very innovative work. Keep up guys. 5 star app. ◎ It's quick to note down your expenses and helps you track your money. ◎ Polished, smart, simple, with all functions of apps of this kind. Exactly the one I was looking for. Makes me delete other similar apps on my phone and keep only this one, really. ◎ I love this app! It is clean, beautiful, very customizable, and user-friendly. I love the ability to make your own categories and accounts. And I also love the ability to put it in your pull-down Notification Center on your phone. It makes it quickly accessible during the day. Great job, love the app! Apple Watch: You can create incomes and expenses from your Apple Watch. The Glance shows your expenses of today, this month. Feature: ◎ Three seconds only: pull down, fill money, choose category ◎ iOS notification center widget: you can easily account when iPhone lock screen ◎ Passcode security: everyone cannot open, only you. even double-click the Home button, in the App list can not view the data ◎ Support more than 160 kinds of currency, conversion exchange rate automatic updates ◎ Calculator: built-in calculator, more convenient and faster ◎ Full gestures: fast billing basic ◎ Humane beginners guide: for special operations, we guide the way through the animation + text, more intuitive, easier to understand ◎ iCloud backup & restore ◎ Dropbox backup & restore ◎ Export data to CSV via Email ◎ Recurring event, both expenses and incomes, with rich frequency options. ◎ Allow custom theme color and wallpaper. ◎ Allow add transaction from template. Basic: ◎ Expense & Income bills can be added photos ◎ Income, Expense, Transfer, the others have ◎ Graphical reports, allowing you to easily view the balance of payments situation year / month / week ◎ Budget management: give yourself a reason to control consumption ◎ A variety of color themes and wallpaper, allows you to fully personalize ◎ Custom categories and consumption expenditure accounts, more in line with your needs ◎ Supports iPhone & iPad ◎ Daily reminder Increase: ◎ Easy copy history through gestures and automatically positioned in the day consumption date, you only need to modify the money can be. of course, you can use the existing money saved directly ◎ You can also add categories and account when billing editing, click on the banner to change currency If you give up because of difficulties If you give up because of busy If you want to know where expenses If you want to save money If 。。。 Try our "DayCost" it, she will be your best assistant URL Schemes: DayCost:// Help translate DayCost: Contribute to the DayCost translation in your language. Let's make DayCost available to everyone in the world! We will show translator's info in DayCost, if you so desire. In addition, we also give several redemption code as a gift. have any suggestions or comments, please write to us:[email protected]
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.