Use APKPure App
Get DynDNS client old version APK for Android
This application assigns a fixed domain name to your Android phone.
This application assigns a fixed domain name to your Android phone even though the IP address can change.
This app is designed specifically for Dyn.com.
For the generic dynamic DNS client that works with all dynamic DNS providers, including no-ip.com, zoneedit.com, joker.com, enom.com, please see my other app.