FamiSafe drains the battery on your kid’s device when you’re actively monitoring their location. However, FamiSafes provides a warning for this on the location tracking map, saying that you should only use the location tracking feature for a short time. FamiSafe had a 0.94% impact on my devices’s battery life when using the parent’s app. Most apps (including Facebook and Instagram) have a 3-4% impact — so FamiSafe really isn’t that bad in comparison.