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
CashTrack Wallet
CashTrack Wallet is a simple and private personal finance tracker that helps you manage your money, track expenses, and control your monthly budget.
$2.99
PRICE
$2.99
No 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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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.
What's included
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 CashTrack Wallet: 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
Include budget alerts and recurring transaction reminders.
Assumption to check: Lack of user engagement features like reminders or notifications.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to create custom budget categories and set personalized limits.
Assumption to check: Limited customization for budgets and categories.
Validate with people who use this workflow before building.
Hypothesis 3
Provide detailed analytics and visual reports on spending trends.
Assumption to check: Difficulty in tracking transactions over time.
Validate with people who use this workflow before building.
Hypothesis 4
Enable users to share budgets and expenses with friends or family for collaborative tracking.
Assumption to check: No social sharing options.
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
CashTrack Wallet is a simple and private personal finance tracker that helps you manage your money, track expenses, and control your monthly budget. With CashTrack Wallet, you can easily record your daily spending, monitor your salary, and keep track of monthly obligations such as bills, rent, and subscriptions. The app works completely offline. All data is stored only on your device. No account, no cloud, and no internet connection required. Features: • Track your monthly salary and see how much money you have left • Add expenses quickly with categories • Manage monthly obligations and mark them as paid • View statistics with charts and summaries • Browse previous months separately • Support for multiple themes • English and Arabic language support • USD and SAR currency support • Fully offline and private CashTrack Wallet is designed to be simple, fast, and secure, so you always know where your money goes.
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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
React Navigation
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
