I have a feeling that the unnamed todo service is Todoist. They offer a free plan, but backing up data requires a Pro plan which is really not ideal:<p><a href="https://todoist.com/help/articles/backups" rel="nofollow">https://todoist.com/help/articles/backups</a><p>I use the free plan, don’t reside in Europe, and recently wanted a backup. If you’re in the same boat, I recommend the following project — it has good documentation and immediately worked.<p><a href="https://github.com/darekkay/todoist-export" rel="nofollow">https://github.com/darekkay/todoist-export</a>