[w1ntermute]

The emulator, hands down. And that's being a long-time TI calculator user.

[starwed]

I am probably two orders of magnitude faster[1] on a real TI than on an emulator. The muscle memory there is deep, and doesn't translate to my phone at all.

[1]no, really

[w1ntermute]

Well, if I am doing anything serious, I use Mathematica or MATLAB, so I haven't had to do anything besides basic arithmetic on my phone.

[felipemnoa]

The user experience is many times better on a real TI then in an Android emulator or even in a computer. For some quick math calculations a computer or Android calculator is find. If I'm doing a lot of math problems I rather use a TI. The usability is just way better.

[mostly_harmless]

They wont let you into an exam with a phone.

[w1ntermute]

That's an artificial restriction, which isn't a primary concern to me.