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
Daily Expense-Spending Tracker
DailyExpense is the easiest and most user friendly Personal Finance.
$1.99 · In-app purchases
PRICE
$1.99
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 included17 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 Daily Expense-Spending Tracker: 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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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 automatic transaction categorization using machine learning.
Assumption to check: Users often struggle with categorizing transactions accurately.
Validate with people who use this workflow before building.
Hypothesis 2
Create a visual budgeting tool with progress tracking.
Assumption to check: Many finance apps lack intuitive budgeting tools.
Validate with people who use this workflow before building.
Hypothesis 3
Add a feature for managing and reminding users of recurring transactions.
Assumption to check: Users find it hard to track recurring expenses.
Validate with people who use this workflow before building.
Hypothesis 4
Include detailed reports and analytics on spending trends.
Assumption to check: Limited insights and analytics on spending patterns.
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
DailyExpense is the easiest and most user friendly Personal Finance. Just buy once to share data between iPhone and iPad via iCloud. (One of the upgraded features: iCloud automatic synchronization and backup) It's the easiest way to track your expenses and income when you're on the go. It's fast, elegant and won't get in your way. helps you track your spending quickly and easily. EASY TO USE 1. Select a category & payee 2. Enter and confirm the amount (and a notes, if you want) 3. 2 seconds，And you're done! See Overview of the month in the main screen. Intuitive display: - Monthly statistics - Daily statistics - The percentage of monthly spend - Monthly available balance, etc. Keep track of your expenses with DailyExpense! • How much did you spend at the local coffee shop? • Are you spending too much eating out? • How much did you spend on clothes last month? • Are you blowing too much on your hobbies? === • The possibilities are endless • Simple and intuitive user interface • See your main areas of spending • Easy visualisation of where your money goes • Beautiful and interactive charts • See the history of your spending • Control your expenses with a monthly budget • Unlimited income and expenditure categories • Unlimited payee • iCloud sync and backup data • Search data quickly • Export CSV data • Touch ID • Password lock protection Give it a try today and let us know how DailyExpense helped you get control of your expenses.
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.
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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.
