Not sure about STT (TTS is reading out articles, etc) but when it comes to autocorrect, Google seems worse. Any time a seeming typo starts getting common, I nearly always recognize it as an Android thing. Maybe Apple's autocorrect doesn't try to change your words, but Google constantly does. Just a few weeks ago the big one was changing `lets` to `let's`, to the point that I changed my wording and just used `allows` to avoid making corrections. I will see a number of posts on Reddit and occasionally here on HN with this mistake. It seems to have stopped for me around last week, but I expect a different common word will be butchered soon.