Three Spell is powered by what3words, it lets you to find your current 3 word address.
It also lets you to get navigation to other 3 word address if you know those 3 words.
Since it is navigation based app, it will require your location access.
You can ask it like :
1. "What is my what three word address" or "show my address".
2. "Direction to guess.magma.yoga" or simply "Navigate to guess magma yoga". Here "guess magma yoga" is a 3 word address without any dots.
3. "I need help" in case you didn't understand what is use of this app.
For more information about 3 word address visit what3words.com