Something not covered also: proprietary software.
If you are using Windows programs to comb through lists (be it custom, or Excel), they may not work on Android, Kindle or iPad (unsure of Surface) systems.
The best bet is if you are combing through lists is to use Excel or another spreadsheet program that is cross-compatible, or close enough for you to modify the functions necessary to spot the names that you need.
Each of these platforms will have a spreadsheet program that works on them, though the FX do differ (noticed this with functions for statistics).
However, with drop lists, it will come down being the first to register them after the drop. You will have to learn how to multi-task with a nice copy/paste/1-click reg.
All of it can be done for on the go, but as mentioned, a laptop or PC is the absolute best option over a tablet.