Yes, both Fit Senpai and JustFive offer a Free Trial.
Pricing for Fit Senpai Starts at $10/month whereas for JustFive Starts at $9.9/month.
JustFive offers several advantages, including 5-minute workouts, Requires no equipment, Suitable for any space, Scientific exercise design, Creates afterburn effect and many more functionalities.
The cons of JustFive may include a Only available on iOS, 5-minute workout limitation, Data tracking across apps, Requires iOS 13.0 or later. and Limited to certain exercise types