Slightly OT: I installed SwiftKey (currently the top option under iOS on this website), and I really like the concept (would at least like to try it out, even though I've developed a pretty good proficiency with two-thumb typing), but I don't like the fact that it's hard to re-do/correct the last word. I can either type slowly, which defeats the point of the keyboard, or type quickly and have to do the slow process of backspacing the last word and re-swiping it (which slows you down a lot).

Is there some magic gesture I'm missing, or is there a different third-party keyboard that has a similar idea but is better in this regard? I'm tempted to pay the $1 for Swype but I don't want to bother to do that and then discover it has similar problems.