Kaeru
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Currency Exchange for iPhone, Widget & Apple Watch
The smartest currency exchange app. Convert between 50+ world currencies instantly. Whether you're traveling, shopping online, or just curious about exchange rates, Kaeru gives you accurate, real-time data in a beautiful interface.
Coming to iPhone, Apple Watch & Widgets Features
Everything you need to convert currencies on the go
50+ World Currencies
Convert between currencies from the Americas, Europe, Asia-Pacific, Middle East, and Africa. All major and minor currencies covered.
Real-Time Rates
Always accurate exchange rates from a free, open-source currency API. Rates update automatically so you're never working with stale data.
100% Offline Support
Cached rates let you convert currencies even without an internet connection. Perfect for travel in areas with poor connectivity.
iPhone Widgets
Small, medium, and lock screen widgets to check rates at a glance without opening the app. Always your most important pair right on your home screen.
Apple Watch
Full Apple Watch app with Digital Crown support for adjusting amounts on the go. Currency conversion right on your wrist.
Conversion History
Your last 100 conversions saved automatically. Review past calculations and pick up right where you left off.
How It Works
Pick Your Currencies
Choose your source and target currencies from 50+ options worldwide. Save your favorites for instant access next time.
Drag to Adjust
Use the intuitive drag control with haptic feedback to adjust amounts, or just type directly. Real-time conversion as you go.
See All at Once
Multi-output mode shows your amount converted into all your favorite currencies simultaneously. Perfect for comparison shopping while traveling.
Kaeru is on its way
We're putting the finishing touches on a beautiful, fast, and reliable currency converter for your iPhone and Apple Watch.
