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, NFC transit card input, 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.

🚃 NFC Transit Card

Tap your Suica, ICOCA, or other transit IC card to automatically log transportation expenses. No typing needed.

💼 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

Viatren does not send your personal data to any server. All trips and expenses are stored locally on your device. Back up your data as a JSON file and restore it on a new device anytime. You can also delete all data from Settings.

✨ How It Works

Your first trip is completely free with full access to all features. From the second trip onward, watch a short ad or upgrade to Premium.

Premium features:
• Ad-free experience
• Unlimited AI receipt scanning
• Unlimited 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.