Sorry, I may need to edit my original comment. I didn't intend to imply that it's bad. It's not that great, but it's not necessarily bad, to be fair. It's just...meh. And honestly, I imagine that's largely due to the fact that unlike the big name keyboard app makers, a lot of FOSS keyboards—Heliboard naturally being one of them—don't track everything under the sun. Which is a good thing and something I like, make no mistake. The unfortunate downside of that is it's also not quite as accurate, simply due to it not having as many data points.

This is not something I blame it for, but at the same time I was hoping perhaps another keyboard might have a prediction system different enough to be slightly better. Then again, I'm no expert on keyboard prediction systems so I probably should've kept my mouth shut in the first place. So apologies for that. :/

I feel autocorrect in general has gotten worse in the last decade or so. One problem I noticed, for example, that I've faced in other FOSS keyboards, not just in Heliboard, is that compared to ten years ago or so, there is a LOT more instances of autocorrect not catching absolute gibberish (like I get a couple letters off and it doesn't catch it) or I'm one letter off of a very common word (like 1 key to the left or right) and it corrects it to something wildly different.

Maybe I'm just misremembering (after all, human memory is hardly ever reliable), but I feel it was a LOT better around the Jellybean era (for Android).

(Side note: this is all Android-specific; I have never owned any iOS device.)