Quoting their github page

• Clears private data on close
• Blocks access to Google trackers and other third-party resources
• Restricts all network requests to HTTPS
• Allows toggling of location permission

I contribute regularly with Street Complete

CoMaps is good if you already know where to go.
I use it in conjunction with GMapsWV: look for a place, copy the coordinates with the share button and paste them into CoMaps.
Never missed an address and I use it quite a bit.

Do not make the train joke. Do not make the train joke. Do not make the train joke. Do not make the train joke. Do not make the train joke. Do not make the train joke. Do not make the train joke. Do not make the train joke…

Micro because it’s literally nano with more familiar shortcuts

Yes it was X’D

Original Reddit Post

Mecabrix Link

Edit:
Found the kit on aliexpress

* zones out for 5 minutes *