Been using this since iOS7, but after upgrading the app to iOS8 version, one efficient feature has been dropped, namely the ability to change the capitalization of a word after its been typed. This is quite a downgrade in efficiency, please bring it back!
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iOS7 version review below
If I need to write anything longer than a few words I always use this app. It is the quickest most foolproof way to input English. Cant type on the phone any other way now.
サイク! about Path Input: Better Swipe Keyboard, v3.3.4