Viatren - AI Travel Budget

Viatren is a smart travel expense tracker that helps you manage your travel budget with ease. It supports multiple currencies, automatic exchange rate conversion, AI-powered receipt scanning, AI budget planning, and a dedicated business trip mode.


🤖 AI Quick Entry

Type expenses in plain language like "coffee 4.50" and AI automatically fills in the amount and category. No forms to fill out — just type and go.


📷 AI Receipt Scanning

Point your camera at a receipt and AI automatically extracts the amount, date, and category. Stop entering data by hand.


🧭 AI Budget Planner

Enter airfare, lodging, trip length, and travel style to get category-level budget suggestions and a daily spending guide before your trip starts.


💼 Business Trip Mode

Manage work travel expenses separately with dedicated categories: per diem, registration fees, local transport, Wi-Fi rental, food, souvenirs, and more. Track reimbursable expenses at a glance.


📊 AI Trip Retrospective Report

When your trip ends, review a retrospective report with spending patterns, category breakdowns, and an AI-generated trip narrative. Use it to plan your next trip even better.


💱 Multiple Currencies & Automatic Exchange Rates

Enter expenses in any local currency and Viatren automatically converts them to your home currency. Switch between automatic and manual exchange rates anytime.


💰 Budget Tracking

Set a budget and track your spending in real time. Budget forecasting, daily spending suggestions, and smart insights help you stay on track.


🗺️ Expense Map

Tag expenses with a location and see all your spending on a map. Search for a place and the category is suggested automatically.


📅 Calendar View

Browse your expenses on a calendar. Tap a date to see exactly what you spent that day.


📈 Statistics & Analytics

Analyze spending by category, payment method, and time period. Customize your dashboard widgets to show what matters most to you.


📄 PDF Report Export

Export your trip expenses and charts as a PDF to share or keep for your records.


🔒 Data Privacy & Backup

Core trip and expense data is stored locally on your device. Optional AI features process receipt images or text through Viatren Cloud Run and Google AI, and cloud sync may use Firebase if enabled. You can back up your data as a JSON file and delete all data from Settings.


✨ How It Works

Free users get the monthly AI allowance shown in the app for AI receipt scanning and AI Quick Entry. Premium includes a higher monthly AI allowance plus an ad-free experience.

Premium features:
• Ad-free experience
• AI receipt scanning + AI Quick Entry up to 300 uses/month
• AI retrospective reports
• Advanced analytics

Also includes: home screen widget, trip start reminder, display currency, timezone-safe dates, dark mode.

Available in English, Korean, and Japanese.