It's in the Debian & Ubuntu repositories. It is also in the F-Droid repository for Android mobiles, so you can install and update easily from an AOSP ROM. All of the above are free and open-source which helps quite a bit with establishing trust. If you are among the majority using Windows or Mac it works there, too.
Sync it between devices by storing its (by default encrypted) database in a service like ownCloud or Dropbox.
It's in the Debian & Ubuntu repositories. It is also in the F-Droid repository for Android mobiles, so you can install and update easily from an AOSP ROM. All of the above are free and open-source which helps quite a bit with establishing trust. If you are among the majority using Windows or Mac it works there, too.
Sync it between devices by storing its (by default encrypted) database in a service like ownCloud or Dropbox.