Here’s my take on this.
The question of which app updates faster isn’t always straightforward, as performance can be influenced by several factors beyond the app itself. Both Life360 and FindMyKids are designed for real-time tracking, but the actual speed depends heavily on the phone’s settings (like battery optimization and background app refresh), as well as network and GPS signal strength.
Generally, Life360 has a reputation for very consistent, frequent updates, especially when its drive detection feature is active. FindMyKids, being purpose-built for child monitoring, also offers very responsive on-demand location requests. One might perform better than the other in different conditions. Your best bet is to look at the feature sets of both and see which one aligns better with your family’s overall needs, as the update speed will likely be comparable in most situations.