For forearm growth
For forearm growth, reverse wrist curl rates well ahead on our research criteria: more of the work on the forearms, more stretch.
Farmer's carry is easier to progress.
The research score comes from these, scored by hand from the studies. Lifter scores appear once an exercise has 10 ratings. How scores work
Farmer's Carry. Superb for grip strength; less direct for forearm size.
Reverse Wrist Curl. Targets the wrist extensors, which most pulling barely trains. Only light weights work, so progress is slow.
For forearm growth, reverse wrist curl rates well ahead on our research criteria: more of the work on the forearms, more stretch. Farmer's carry is easier to progress.
About the same: both are easy to learn.
Farmer's carry needs dumbbells, so a home gym covers it. Reverse wrist curl needs dumbbells and a bench, so a home gym covers it.
Reverse wrist curl: it rates Excellent for joint and recovery cost in our research rubric, against Strong for farmer's carry.