iOS app Textastic features a similar swipe-to-key-corner feature. https://www.textasticapp.com/ https://www.textasticapp.com/ It's wonderful. There's also a m

iOS app Textastic features a similar swipe-to-key-corner feature. https://www.textasticapp.com/ https://www.textasticapp.com/ It's wonderful. There's also a macOS version.