Letterly

The Android app is fast, well laid out and understands my accent. It then magically mangles my thoughts into a well structured email, or X post (character limit observed) or LinkedIn post and adjusts the tone accordingly. Yes, you could get other websites with clunky interfaces, but they certainly don't offer voice to being uploaded to LinkedIn in 2 clicks.
A Search feature would be nice in the future, but given that's my only thoughts on an upgrade, this is a near perfect product!