Absolutely. If you already have an iPad, a great way to use it on Bramble is as a secondary device for drawing. So if you have a laptop and an iPad, you connect them both to the same room:
Connect to the Bramble Room on your computer (using Chrome). Join with voice on Speaker test.
Connect to the same Bramble Room on your iPad (using Safari). Join without voice on Speaker test.
You can then use your laptop for voice connection and iPad for drawing. You can share resources on both devices if you wish.
You can also use your iPad as a primary device for voice on Bramble, but bear in mind voice connection/recording is not as reliable on iPads/tablets as it is on computers/laptops. So if you do have access to a computer, that is better to use for voice connection.