TrackSSL does one thing well: monitoring SSL certificates and sending alerts before they expire. If SSL expiry is your only concern, it's a reasonable focused tool.
Agencies managing client sites typically have four recurring failure modes, not one. An SSL cert expiring is one of them. But a domain lapsing, a site going down, or a DNS record quietly changing can cause the same broken-site outcome — and none of those are covered by an SSL-only monitor. IT Watch covers all four for a similar monthly price.
Focused, reliable SSL certificate monitoring. Good alert customization for certificate expiry dates.
Four check types (SSL + domain + uptime + DNS) for the price of one. The same 30/14/7/3/1-day ladder applies to both SSL and domain expiry — you get a complete picture of every upcoming deadline across all your client sites.