Segway-Ninebot

Completely useless. Operates entirely on a hypothetical mile range. App says I have 17 mile range, I go 5mph on a completely flat road for 2 minutes, suddenly down to 13 mile range. Guard mode only works within 3 feet of the scooter. Don't trust it, buy a brake lock. The only value in the app is being able to see your battery percentage, because for some reason it is never displayed on the actual scooter. You'll have to experiment on your own to find your actual mile range.

Trying to force me to use the new firmware. Absolutely not, they don't let you roll back. The dashboard was cool, but this is unacceptable. Luckily you can reload the app for 10 seconds to avoid the forced firmware "upgrade" notice. You can bet your bottom dollar I'll uninstall once they figure this out.

The lock screen interface doesn't follow language settings and is in Chinese, which sucks and is the main reason for 3 stars. It also interferes with music players on the lock screen. Otherwise it works well and does what you need it to easily, including locking, changing some settings of the scooter, trip tracking/mileage, stats on the scooter and battery, firmware updates, and a segway-only social platform that can be fun if you want to ride with other people and maybe make some friends.