You can control your Nest Learning Thermostat from the Insteon app by following the instructions in this article.
Nest Setup on iOS
Step 1
Tap the drawer icon to open the drawer
Step 2
Tap Add a Device
Step 3
Tap Thermostat
Step 4
Tap Nest Learning Thermostat
Step 5
Review the Works with Nest terms and conditions and, when ready, tap Connect
Step 6
Enter your Nest account email and password and tap Sign in
Step 7
Test your Nest and when ready, tap Done
Nest setup on Android
Step 1
Tap Settings followed by Edit Settings
Step 2
Tap Devices
Step 3
Tap the Add button in the upper right corner
Step 4
Tap Thermostat
Step 5
Tap Nest Learning Thermostat
Step 7
Review the Works with Nest terms and conditions and, when ready, tap Connect
Step 8
Enter your Nest account email and password and tap Sign in
Step 9
Test your Nest and when ready, tap Done