Lydian

No ads, and super light (~1 MB!) Lydian is a currency and foreign exchange converter & calculator that supports world currencies, Bitcoin, and some valuable materials. See foreign exchange rates, calculate the value of any amount in the selected base currency in many target currencies just by a single tap. Switch base currency with any target currency at any time by swiping it to the right! All conversions and calculations will be performed instantly! Quick and easy! Lydian remembers your last calculation so that you can easily use the same amount without entering it again and again. Lydian supports Dark Mode, and the calculations can work even when the device is offline. Lydian is a super light (~1 MB!) app, and it has no ads! It does not show any advertisements, and it does not collect any personal data. It is an indie app made with love. Use it with peace of mind. Please rate and review on the App Store if you enjoy using it.  Thank you!