Apps like STF ZEN

Here are some great alternatives to STF ZEN by Stuffactory :
AIZO RING
AIZO RING
★3.3
RingConn Smart Ring
RingConn Smart Ring
★4.4
Dhyana - Wellness Tracker
Dhyana - Wellness Tracker
★4.3
FITTR HART: Smart Ring
FITTR HART: Smart Ring
★3.5
Rings - Watch Face
Rings - Watch Face
★4.9
Sleep Viatom O2Ring Advanced
Sleep Viatom O2Ring Advanced
★3.9
Luna Ring: Rise to brilliance
Luna Ring: Rise to brilliance
★3.9
Ring Auto Open
Ring Auto Open
★3.6
TOZO Health for S3/S4/S6-10/W1
TOZO Health for S3/S4/S6-10/W1
★3.4
TOZO Wear
TOZO Wear
★4.5
ONEai Health
ONEai Health
★3.6
zeofit
zeofit
★3.6
SLT Zen - Widget & icon pack
SLT Zen - Widget & icon pack
★4.1
Keep Health
Keep Health
★3.2
Energy Ring: Universal Edition
Energy Ring: Universal Edition
★4.3
BKTFit
BKTFit
★4.0