I have Logos 4 on my Windows 7 PC laptop. I have been holding back on which reader to get: iPad or Android. My son just bought an iPad and my son-in-law has an Android device. Both units have been demonstrated to me with high enthusiasm of their respective owners.
I am wondering if I can "test-drive" my Logos library on both units to see how it functions so I can determine which unit to go for. I understand I will have to install apps on each one to access my library. Do they require downloading of resources? Do they have any indexing? Can they be deleted when my test-drive is done? I do not want to leave my account vulnerable to tinkering, accidental or mischievous. 
How is one to go about a 1 hour test-drive on each?
I apologize for being so ignorant of these youthful gadgets. Thanks for indulging my newbie questions.