Why Build a Expense Splitting App?
Splitting expenses among friends, roommates, and travel companions is a universal need. Apps like Splitwise have proven that a simple, well-designed expense splitter can reach millions of users.
An expense splitting app needs group management, flexible splitting options (equal, percentage, custom amounts), balance calculations, and settlement tracking.
Fastshot generates a native expense splitting app with group creation, flexible bill splitting, running balances, and settlement suggestions for iOS and Android.
You can build this expense splitting app using our [AI mobile app builder](/ai-app-builder) — describe what you want and get a working native app in minutes.
Key Features for Your Expense Splitting App
Group expenses, running balances, and smart settlements — make splitting bills painless for roommates, travelers, and friend groups.
Group Management
Create groups for roommates, trips, or events with easy member management.
Flexible Splitting
Split expenses equally, by percentage, by exact amounts, or by shares for maximum flexibility.
Balance Tracking
See who owes whom with real-time balance calculations updated as expenses are added.
Settlement Suggestions
Smart settlement recommendations that minimize the number of payments needed.
Expense History
Browse all shared expenses with details on who paid, who participated, and how it was split.
Activity Feed
Real-time feed showing new expenses, payments, and settlements within each group.
How to Build a Expense Splitting App with Fastshot
Describe Your Splitting Scenario
Tell Fastshot about your expense splitter: roommate bills, travel groups, dinner splits, or shared household expenses. Describe how people add expenses and settle up.
AI Divides and Conquers
Fastshot generates group management, expense logging, flexible split options, balance calculations, and settlement suggestions — all in Supabase for real-time sync.
Split Last Night's Dinner
Preview on your phone. Create a group, add a restaurant bill, split it three ways, and check that the balance calculations are correct before anyone gets awkward.
Save Friendships Everywhere
Cloud builds produce your app. Publish and help friend groups, roommates, and travel companions split expenses without the headache.
Frequently Asked Questions
About the Author
Elvira Dzhuraeva is an expert in AI mobile app development and React Native. A former Senior Product Manager at Google specializing in AI/ML and Generative AI, she is the Founder of Fastshot (YC-backed) and a founding contributor to Kubeflow.