When comparing Facilethings vs Momentum, the Slant community recommends Facilethings for most people. In the question“What are the best cross-platform to do list apps?” Facilethings is ranked 25th while Momentum is ranked 46th.
Ranked in these QuestionsQuestion Ranking
Pro Helps the weekly review process
Pro Allows adding items via email
Simply send an email to firstname.lastname@example.org to add a new item to the Inbox.
Pro Support of a "start" date and a "expected" date
This is a very outstanding feature for a gtd App.
Pro Horizons of Focus
FacileThings integrates GTD's Horizons of Focus.
Pro Allows attachments in emails
You can collect stuff in the FacileThings Inbox by sending an email with attachments to the email@example.com address.
Pro Full Integration and Syncing with Evernote
All notes are automatically synced.
Capture things in Evernote and the notes will appear in the FacileThings inbox.
Reference Material in Evernote will appear in Facile Things.
Pro Integrates with a bunch of third-party tools
Facilethings can integrate with Evernote, Twitter, Dropbox and Google calendar.
Pro Very simple
Pro Excellent support
Pro Automated Next Steps
Next steps have a separate view. Tasks can be updated sequentially or parallel.
Pro Projects and Tasks can be endlessly nested
You can nest multiple projects with tasks, there is no limit.
Web-based, progressive-web-app (PWA).
Pro Specifically designed for GTD
Pro Has an offline mode
No permanent internet connection needed.
Pro Realtime synch
Data instantly updates on all devices.
Pro Clean design
Lots of space helps focus on the tasks.
Con Android app
The Android app is not always reliable and doesn't have all of the features of the desktop app.
Con Rather slow
The web app has some performance issues. It feels too unresponsive at times.
Con A lot of clicking
Little inline editing or keyboard shortcuts.
Con Relatively costly
Con No native Windows App
Con Mobile web version is rubbish
Con No recurring task functionality
Con In Beta (development)
Con Beta interface is confusing for first-timers
The interface is very opinionated (this is a good thing). But it is not obvious how to map user's own GTD variant onto the one the author has in mind. Maybe after it is in production, there will be better on-boarding.