Yes. GridMate has been successfully deployed on Salesforce Classic. See below 👇
Step by step guide is available here 👉 Salesforce Classic deployment
Yes, GridMate has been successfully deployed on iPad. See below 👇
No, GridMate license should be granted only to the relevant users. GridMate components can be combined with standard components using visibility conditions in the Lightning App Builder.
We suggest to create a custom permission, assign it to the licensed users and finally use this permission to show or hide the component from the Lightning App Builder. See below 👇