When comparing On{x} vs IFTTT, the Slant community recommends IFTTT for most people. In the question“What are the best Android apps for making your phone automatically perform certain actions based on set criteria?” IFTTT is ranked 2nd while On{x} is ranked 10th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Access to scripts
On{x} users have access to a whole database of specialized scripts that can be edited or used as they are.
Pro Program remotely
Instead of having to edit code directly from your phone, code is edited through Microsoft's onx.ms website.
Pro Detects speed and acts accordingly
This app tracks users by GPS and knows if they are sitting still, walking, running, or driving. This functionality can be used to trigger actions when a certain pace is achieved, such as "Play music when I start running."
The GPS integration can also be useful for triggering actions when a user leaves or arrives at a location. Popular recipes that use the GPS function are "Remind me to work out if I haven't been to the gym in 3 days" or "Text my boyfriend when I leave work".
Pro Free
Pro Extremely simple
While this app can complete complex tasks, it is very easy to use.
Cons
Con Project seems to be dead
There are several forum posts on their website inquiring if the project is still being developed, and there do not appear to be any responses from developers. To add to this, the last update for this app was in February of 2014
Con Forced Facebook login
Although all the recipes can be seen and used without Facebook login, many users find Facebook integration unnecessary.
Con Bad for battery life
The GPS tracking is horrible for battery life, but other variables might make this con bearable.
Con Bare
While this app is incredibly useful, not much emphasis is put on making the UI pretty. This in no way effects the functionality of the app, but some users might find the basic interface unappealing.
Con Recipes aren't guaranteed to work
Sometimes recipes don't work as expected, or fail to launch completely.
Con Limits only one action per trigger
Instead of allowing users to have a large amount of actions launch based off of one trigger, the limit is only 1:1.