This could be a good alternative to Minuum when mixed together. The single line was great in theory, but in practice I often preferred the regular keyboard layout. Maybe the autopredict did not work all that well, at least with the multiple languages I mixed then? Going to two lines might improve it, and devices are bigger now than back then.
Some old Galaxy phone for me I think. And then I used it a bit on an LG G3. Only regular app I ever bought (the one other purchase was a game, https://egamebook.com/knights/).
But it must have been great for the small Nexus 4.