I am a seminary student learning Greek and Hebrew and there are excellent flashcard and other apps from olivetree that really help with learning the alphabet and grammar.
I also have a ton of Bible lessons from podcasts (over 1000 lessons at over an hour each).
I expect to do even more. I have a feeling I should get the 64GB iPod Touch, but should I wait for an even larger version to come in the 4th gen. model this coming summer?
Thoughts?
Much appreciated.
Short answer: You would almost definitely be fine with the 64 GB Touch. You may even be fine with the 32!
Long answer: Apps won't take much space at all; very few even approach 100 MB, and those tend to be games with lots of graphics, sounds, music, etc. (GPS apps such as TomTom and Magellan can take a couple of gigabytes each, but they aren't compatible with the Touch without an expensive hardware addon anyway.)
I've filled my Touch with 11 screens of apps (180 apps total) in all flavors: games, news and RSS readers, music apps, and they TOTALED less than 3 GB. Flashcards and dictionaries will barely even show up on the radar; I've found Hebrew Bibles and dictionaries that are less than 20 MB.
As for podcasts, they tend to be encoded at a pretty low bitrate, so they shouldn't take nearly as much space as the equivalent length of music. Do you use iTunes? If so, you can check the size of your podcasts by going to the Podcasts section of your Library and selecting all the podcasts you would be loading; the status bar at the bottom of the window should say something like "1000 items, 41:18:00:00 total time, XX.XX GB".
I can tell you that I have 74 DAYS of podcasts (2120 files) and it's barely over 25 GB worth of material. In the unlikely event that your podcasts are encoded at a much higher bitrate, they'll take slightly more space, but I'd be surprised if you couldn't fit them all onto a 64 GB Touch with PLENTY of room to spare.
