Expense Tracker App Resume Project Example
An offline-capable expense tracker with local persistence, category summaries, and reactive state that helps users manage spending.
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SOFIA ROSSI
iOS Developer
Project
Offline data app
Persistence-ready- Persisted transactions locally with Core Data.
- Built SwiftUI summaries and category charts.
- Added XCTest coverage for budgeting logic.
Why this project is valuable
Strong persistence signal
This project proves local data modeling and reactive state rather than only displaying remote data.
Clear user value
Expense tracking is easy for recruiters to understand because it maps to a concrete, useful app.
Good ATS coverage
The project naturally supports Swift, SwiftUI, Core Data, Combine, XCTest, and state management keywords.
Good interview depth
You can discuss data modeling, Combine-based reactivity, testing, and SwiftUI state handling.
Project overview
An expense tracker is strong iOS resume material because it shows how you modeled local data, managed reactive state, and built a maintainable app instead of only wiring a single API screen.
The app stores transactions in Core Data, exposes them reactively with Combine, and presents category summaries and charts in a SwiftUI UI.
That gives you concrete ways to describe data modeling, reactive state, testing, and the clean architecture behind a genuinely useful offline app.
Architecture overview
Project flowSwiftUI UI
SwiftUI screens capture transactions and render summaries and category charts.
View model layer
View models expose reactive UI state derived from stored transactions.
Dependency injection
Injected services keep modules decoupled and testable.
Core Data store
Core Data persists transactions and categories with reactive updates.
Preferences
UserDefaults stores lightweight preferences like currency and budgets.
Summaries
Aggregated queries power spending summaries and category breakdowns.
What this project includes
- Core Data local persistence for transactions
- Reactive state with Combine
- Dependency injection across modules
- SwiftUI summaries and category charts
- XCTest coverage for budgeting logic
Tech stack
This stack is useful for iOS hiring because it shows local data handling, reactive UI, and tested logic as one coherent app.
Swift
Implements app logic, reactive flows, and aggregation for summaries.
SwiftUI
Builds the transaction entry, list, and summary UI declaratively.
Core Data
Persists transactions and categories with reactive updates.
Combine
Drives reactive state between the data layer and SwiftUI views.
Swift Charts
Renders category and spending charts for clearer insights.
XCTest
Covers budgeting and aggregation logic to keep behavior reliable.
Features implemented
Local persistence
Transactions are stored offline so the app works without a connection.
Reactive summaries
Combine-driven updates keep summaries and charts in sync with new data.
Tested logic
XCTest keeps budgeting and aggregation logic dependable.
Useful insights
Category breakdowns turn raw transactions into helpful information.
SwiftUI state handling
State-driven UI keeps screens predictable and bug-resistant.
Preferences
UserDefaults-backed settings personalize the experience.
Resume bullet examples
These bullets show how to present this app as solid data-layer and architecture work instead of 'made an expense app.'
- Built an offline expense tracker with Swift, SwiftUI, Core Data, and Combine using a clean MVVM architecture.
- Modeled transactions and categories in Core Data and exposed them reactively with Combine.
- Built category summaries and charts that turned raw transactions into clear spending insights.
- Added XCTest coverage for budgeting logic to keep calculations reliable across changes.
Skills demonstrated
This project demonstrates strong iOS skills for local persistence, reactive state, testing, and SwiftUI UI.
Data
Architecture
UI
ATS keywords extracted from this project
Use keywords that reflect real persistence and state work, not only the UI framework name.
Interview questions based on this project
Persistence-focused projects often lead to questions about data modeling, reactivity, and architecture choices.
What made this more than a CRUD app?
It modeled relational data, exposed reactive Combine updates, aggregated spending into insights, and was covered by tests.
Why use Combine with Core Data?
Combine keeps the UI automatically in sync with data changes, removing manual refresh logic.
What did you test?
Budgeting and aggregation logic were covered with XCTest to keep calculations reliable.
How would you improve it further?
I would add iCloud sync, budget alerts, and export features while keeping the offline-first core.
Common mistakes
Explain the data modeling, reactive state, and architecture that made the app solid.
Core Data modeling and Combine reactivity are the strongest parts; show them.
Mention MVVM and dependency injection so the work sounds maintainable.
Summaries and charts show the app delivered real user value.
FAQ
Is an expense tracker a good iOS resume project?
Yes. It clearly demonstrates persistence, reactive state, testing, and SwiftUI UI in one practical project.
Does this help for modern iOS roles?
Yes. It maps well to roles using SwiftUI, Core Data, Combine, and clean architecture.
Should I mention Core Data and Combine on my resume?
Yes, if they genuinely supported the app and you can explain how they fit into the architecture.
How many bullets should I use for this project on a resume?
Usually two to four bullets are enough. Focus on data modeling, reactivity, testing, and insights.
Turn project details into resume evidence
Use this expense tracker to strengthen your iOS resume
Present local persistence, reactive state, and recruiter-friendly architecture with clearer wording and stronger keyword alignment.
Free to start · No credit card required