If you're looking for an iPad DAW that has maximum likeness with the desktop workhorses, with a traditional lane-based sequencer and track-based effects, then GarageBand for iOS* may be too streamlined for you. Steinberg's Cubasis* will be especially familiar to users of Cubase on Windows or macOS, but also to any user of a linear sequencer like Logic Pro X*. Newcomers may find Cubasis a little overwhelming, but if you can tackle the learning curve, it will not let you down as your needs grow to be more complicated.
The latest Cubasis 2.2 update* adds two features likely to help you put tracks together fast: Note Repeat for the easier programming of beats, and Track Duplicate for making exact copies of tracks and their settings.
There is also a new in-app purchase: Classic Machines gives you the sounds and some of the programmability of ten legendary drum machines. Obviously, names like SIX, EIGHT, NINE, LD1 and LD2 point to certain vintage beatboxes, without claiming to be exact clones.
There are also the usual fixes and improvements of a new version, and Cubasis supports Inter-app Audio, Audiobus and Audio Units. So in addition to the included Micrologue, MicroSonic, MiniSampler and the Roomworks SE reverb you get if you register the app with Steinberg, you can expand your options with synths and effects from the App Store.
Steinberg is running a summer sale on both Cubasis 2 and its in-app purchases through to July 18, 2017, so now would be a good time to snap it up at half price.
* = App Store and Mac App Store affiliate links