Theragun Prime vs Ekrin B37: Is the Brand Name Worth $70?

Two Different Philosophies at a Similar Price

The Theragun Prime and Ekrin B37 sit close together in price but represent opposite approaches to the entry-to-mid-range market. Therabody’s strategy with the Prime is to bring its signature 16mm amplitude and ergonomic handle design down to a more accessible price point, while reserving heat therapy and the full app library for the Plus models above it. Ekrin’s strategy with the B37 is to maximise raw hardware specification — stall force, battery, warranty — and skip connected features entirely.

Both approaches have a clear audience. The question is which one matches how you actually plan to use the device.

Amplitude vs Stall Force, Again

As with the flagship comparison between the Theragun Pro Plus and Hypervolt 3 Pro, this comparison comes down partly to amplitude versus stall force — but the gap is wider here. The Theragun Prime’s 16mm amplitude is a genuine four millimetres deeper than the Ekrin B37’s 12mm, noticeable on large muscle groups. But the Ekrin B37’s 56 lbs stall force is nearly double the Prime’s 30 lbs, meaning it sustains that shorter stroke under considerably more bodyweight pressure before the motor slows.

For hand-applied use on small-to-medium muscle groups — which covers most daily recovery sessions — both devices are more than capable. The practical difference becomes clearest on large muscles under sustained pressure, where the B37’s stall force advantage and the Prime’s amplitude advantage pull in different directions.

The App Question

The single biggest functional difference is connectivity. The Theragun Prime’s Therabody app access — even in its reduced form compared to the Plus models — includes SmartScan body mapping and basic guided routines, which genuinely help beginners learn where and how to apply percussion.

The Ekrin B37 has none of this. For an experienced user who already knows their treatment routine, this is irrelevant. For someone new to percussive therapy who wants structured guidance, the absence is a real gap that the B37’s superior hardware specifications do not close.

Which Should You Choose?

If you are new to massage guns and want app guidance, or if 16mm amplitude on large muscle groups is a specific priority, the Theragun Prime is worth the extra $70.

For everyone else — particularly anyone who values raw hardware performance, all-day battery life, or the security of a lifetime warranty — the Ekrin B37 is the stronger purchase and the recommended choice for most readers of this site.