Apps like 321FIT

Here are some great alternatives to 321FIT by Matthew Burton :
Workout - Log, Report, Program
Workout - Log, Report, Program
★3.8
FitNotes - Gym Workout Log
FitNotes - Gym Workout Log
★4.7
Burn.Fit - Workout Plan & Log
Burn.Fit - Workout Plan & Log
★4.7
Workout Planner — GymKeeper
Workout Planner — GymKeeper
★4.8
GymACE Pro: Workout Tracker
GymACE Pro: Workout Tracker
★4.8
JEFIT Gym Workout Plan Tracker
JEFIT Gym Workout Plan Tracker
★4.3
Gymaholic: Fitness & Workouts
Gymaholic: Fitness & Workouts
★3.4
Bodybuilder Weight Lifting log
Bodybuilder Weight Lifting log
★4.0
Gym Workout Tracker: Gym Log
Gym Workout Tracker: Gym Log
★4.9
Simple Workout Log
Simple Workout Log
★4.8
GymACE: Workout Tracker
GymACE: Workout Tracker
★4.6
Planfit - Gym Workout Planner
Planfit - Gym Workout Planner
★4.4
Workout And Gym Tracker
Workout And Gym Tracker
★4.9
9 Timer - Timer for Workout
9 Timer - Timer for Workout
★4.3
Workout Log - Gym Buddy
Workout Log - Gym Buddy
★4.5
ProFit - Workout Log & Tracker
ProFit - Workout Log & Tracker
★3.8