Converter

A modern and free converter for currencies and other units for iOS.

• all world currencies, as well as crypto
• examples, comparative values
• no ads or in-app purchases
• custom converters
• themes
• updating currency rates on limited connections
• currency detection by geolocation

Screenshots

Other non-obvious features

You can add currencies to your favorites by swiping left in the general currency list.

You can save a conversion pair to your favorites by pressing the ♥ button. To open the favorite pairs menu, hold the ♥ button.

You can swap the values (move the result to the input) by holding the ⇅ button, or by swiping down on the screen.

To delete the last entered character, you can use a swipe left.

To change the converter type, swipe up.

Updating rates via DNS

The converter can update currency rates via DNS.

Even with a limited network connection, for example, in closed Wi-Fi networks or when the mobile internet balance is exhausted, DNS traffic often continues to work.

This allows you to get up-to-date rates even when roaming and without a paid internet connection - for example, just after arriving in a new country or during a layover at the airport.

The rates are stored in the following TXT records:

meta.converter.drusha.me

[current date]@[MD5 hash of data1+data2]

~ nslookup -type=txt meta.converter.drusha.me
meta.converter.drusha.me    text = "2025-09-14@82a029f2191fec1d4c4deb54c4c7dbb4"

data1.converter.drusha.me and data2.converter.drusha.me

Currency rates, separated by @, in the same order as presented in the JSON.

~ nslookup -type=txt data1.converter.drusha.me
data1.converter.drusha.me   text = "1.0835234192971@3.6725@68.146381@..."