Apps like Site Monitor

Here are some great alternatives to Site Monitor by Martin Norbert :
UptimeRobot: Monitor anything!
UptimeRobot: Monitor anything!
★4.0
IMSO: server status monitoring
IMSO: server status monitoring
★4.2
AT Communication Monitoring
AT Communication Monitoring
★4.2
Web Alert (Website Monitor)
Web Alert (Website Monitor)
★4.2
tawk.to
tawk.to
★3.9
Mobile Poller for Site24x7
Mobile Poller for Site24x7
★5.0
AnyTracker - track anything!
AnyTracker - track anything!
★4.1
Web Alert (Pro)
Web Alert (Pro)
★4.2
IPLOGGER URL Shortener
IPLOGGER URL Shortener
★3.8
WebSite-Watcher
WebSite-Watcher
★3.7
AllTracker Control Center
AllTracker Control Center
★4.7
Downdetector
Downdetector
★3.5
Battery Monitor Widget
Battery Monitor Widget
★4.6
Internet Speed Monitor
Internet Speed Monitor
★4.5
Site24x7
Site24x7
★4.1
Phoniac, a Phone Usage Monitor
Phoniac, a Phone Usage Monitor
★3.3