According to Wikipedia, SimpleMDM doesn't provide "Device Lockdown" and "Expense Management", whereas there are some vendors provide all (all green in a row). [1]
Also as far as I know, SimpleMDM pricing[2] is not the cheapest in the market either, their feature set is similar to Mosyle's, but Mosyle's cheaper.[3]
[1:] https://en.wikipedia.org/wiki/List_of_Mobile_Device_Manageme...