When you register a trademark, you choose if the registration is for a word mark, a logo or both. Which ever you choose the trademark must be distinctive.
A word mark will prevent others from using those words or combinations of words that are so similar they may create confusion. With a word mark, you are free to change the design. In fact, you don't even need a design.
A logotype (sometimes referred to as device, design or figurative mark) is a mark where you have some sort of visual component or just a special typeface. A logo will only prevent others from using the identical, or a very similar logo.
Markify is currently only focusing on word similarity.
Disclaimer:
These help articles do not constitute legal advice and should not be relied upon as such. These articles set forth general educational principles only. Consult with a lawyer about your particular case.
Markify is a name-screening tool and there is no guarantee that it will find all potentially conflicting trademark registrations or that the found "similar" trademarks will pose a problem in the naming matter at hand.