When comparing Timer+ vs Routine timer, the Slant community recommends Timer+ for most people. In the question“What is the best multi / repeating timers / alarm apps for iOS?” Timer+ is ranked 1st while Routine timer is ranked 3rd. The most important reason people chose Timer+ is:
For timers that will be used multiple time you can save the timer with custom name such as "boiling water" to the reuse it anytime you need.
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Pros
Pro Favorites
For timers that will be used multiple time you can save the timer with custom name such as "boiling water" to the reuse it anytime you need.
Pro Ability to run multiple timers at once
You can have as many timers as you want going at the same time. This is convenient for when one want to multitask.
Pro Countdown for end of activity
Pro Has feature to define time to transition from one activity to another
Pro iPad and iphone versions available
Has an iPad version as well.
Pro Supports iCloud
Cons
Con Limited to preset alarm sounds only
A number of alarm apps let you pick your own alarm sound, sadly it seems most timer apps do not, this is one of them.