Use APKPure App
Get Double Unit Calculator old version APK for Android
Conver 2 different types of units on a single screen.
With Doublr Unit Converter you can convert 2 different types of units on a single screen.
Simple interface.
No need to switch between screens etc.
Just choose your category and unit.
All in one screen.
Ability to copy and paste values by holding a finger on the field.