When comparing Todo by Appigo vs RemindersPro, the Slant community recommends RemindersPro for most people. In the question“What are the best cross-platform task apps?” RemindersPro is ranked 73rd while Todo by Appigo is ranked 80th. The most important reason people chose RemindersPro is:
No need to sign up on some external website. Works out of the box.
Specs
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Pros
Pro Sync
Todo syncs quickly across all your devices.
Pro Many possibilities
The app is easy to use and supports many work styles.
Pro No sign-up required
No need to sign up on some external website. Works out of the box.
Pro Works with iOS reminders app as well
Not proprietary, easy to switch back to the built-in iOS reminders.
Pro Supports workflows
It has workflows to automatically move and reprioritize reminders. And these changes will even be reflected in your iOS Reminders app. E.g. If you have a "Call" list and you say to Siri "Remind me to call mom" then it will automatically move it in there. Or you can set up a rule to move reminders containing your boss's name into your "Work" folder.
Cons
Con No Windows app
Unlike rival to-do list apps such as Todoist or Wunderlist, Todo does not have an official app for Windows.