Additional uptime monitor extension (HetrixTools)

I was looking for a free and fast uptime monitor (interval 1 min) and found HetrixTools.Uptime Monitor & Blacklist Monitor15 Uptime Monitors • 1 Minute Interval32 Blacklist Monitors • Checked EverydayFREE Forever!No other restrictions as far as I can see.I would like HetrixTools as an extra option for "monitoring service" where you can select which uptime monitor to use (Monitoring -> Advanced Uptime Monitor -> Settings)