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.
BalanceTrackr is a simple and private app to manage your finances, free from ads, paywalls and subscriptions
$0.49 · 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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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 BalanceTrackr: 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: Limited account linking options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Manual transaction entry is tedious
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lacks customizable budget tracking
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No recurring transaction detection
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.
BalanceTrackr is a simple and private app to manage your finances, free from ads, paywalls and subscriptions. No login or bank connection required. Add personal and shared accounts from as many banks as you like. Track balances, transactions, loans, and credit cards with clear overviews and intuitive graphs. Most features are manual to give you full control, but optional smart features like automatic logging with Apple Pay are available to simplify your workflow. Ideal for those tired of Excel, seeking an easier alternative for personal finance management. Features: • Total balance overview • Countdown to next payday • Manual entry of accounts, transactions, loans, and credit cards • Recurring transactions for fixed expenses • Account balance graphs and history • Currency and payday customization • Loan calculator for annuity and serial loans • Face ID/Touch ID support via iOS settings • Automatic logging with Apple Pay: Log transactions automatically in the background when you pay with Apple Pay – no need to open the app. • Receipts for transactions: Add receipts from camera, photo library, or PDF directly to your transactions • Currency calculator: Instantly convert between currencies • Spending breakdown: See how much you spend by category • Widgets! Track the countdown to payday or see the balance of 1 to 3 accounts – right from your home screen. • Multiple types of notifications (optional): - Get notified when a shortcut (e.g., Apple Pay transaction) is logged, or - when an account balance falls below a chosen amount, or - about upcoming transactions you have planned, or - when it’s time to pay a loan. • Set and track your progress toward your financial goals with the savings feature • Payday integration – track your savings since your last payday • Payday history: See how much you’ve saved or spent since your last payday – over time. • Budgeting: Set monthly spending limits per category to gain better control of your expenses. • PDF Reports: Generate PDFs with an overview of your finances – choose between financial report, account report, debt report, or category report. • Choose your own background color for a more personal app experience • Multi-currency support. Choose a main currency and set different currencies per account • Smart note suggestions. Get helpful suggestions based on your past transaction notes The loan calculator provides a clear repayment plan with monthly and annual details. Figures may differ slightly from your bank, but offer a good estimate without needing to log in. Activate security with Face ID or Touch ID by holding the app icon and selecting "Require Face ID" or "Require Touch ID".
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.