Proactively prevent your certificate from expiring.
SSL Checker is currently available in the Apple App Store for all iPhone devices running iOS 10.0 or above.
Identify the issues with a SSL certificate
This app tells you what is wrong with the certificate, and if you monitor a host, it will also sends you a notification when its certificate is about to expire.
Track SSL
You can now track your SSL certificates right on your cell phone.
Monitor SSL
This app monitors SSL certificates for you, and notifies you when there is an issue.