Coming to Sinceerly, it is available as a Chrome plugin and offers three modes – Subtle, Human, and CEO. In Subtle mode, the tool removes all filler words and turns phrases into contractions. In the Human mode, the tool adds more conversational tone and introduces a type in the first sentence. And then comes the CEO mode, here, it takes things to advance level by converting the piece to all lower case, and more. The Tool can be used for free a few times, and then it will ask you to pay $4.99 to continue the usage.