Do not download! Denial of paid service.
To the developers of Instatube and Instatube 2. I, am one among many others that PAID for instatube (both instatube and instatube2 in my case) because of its ability to download and store media files on my iDevices. This was the only selling point of your "premium paid" app. By removing its ability to do so as well as the update deleting previously downloaded media files, not only should all of us be reimbursed the cost of these apps but also reimbursed for the data loss incurred as well. This is ultimately a denial of a paid service.
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Instatube 2 - Video Player for YouTube, Vimeo & Dailymotion, v4.0