Does SNAP work on an iPad?

No. You cannot scan on an iOS device, but you can view your data on an iOs Device

SNAP currently is only compatible with several Samsung Tablets on the Android platform. You can see that list here

We may introduce SNAP to the iPad later on, but this is not compatible as of today. 

As a reminder, our Fit3D Cloud Dashboards are viewable on any device that has internet connectivity. So you can view your Fit3D scans on any device regardless on being on the Apple or Android operating system.