So far so good with this product. It's too soon to say about results.
Surprisingly positive: The gel and lotion that come with the bundle are scent-free. This is way ahead of many in the industry because it means more people can use what comes free with the device since scented products exclude many users. Also, of course, we wouldn't wnat to push toxins deep into the skin (if one is knowledgeable about fragrances which they apparently are in this choice).
The App: The app is overall good so far. But, I haven't used all of the options. In the high forehead option though, the app stalled, asking me over and over to change attachments which I had done. There was no way to tell the app to skip that step and so no way to move on. You have to just exit out of the program and start over.
Needs Improvement: There was a bump in the road at first. The Amazon description at the time I purchased did not clearly state that for the Trinity Plus, the regular Trinity attachments do NOT work. You have to get attachments that state Trinity Plus Only.
Good Customer Service: The seller did allow me to return my Trinity attachment promptly and sent me the link for the correct Trinity Plus attachment. But, they need to make the descriptions on products clearer in this regard. I have not yet received the refund for the attachment, but I assume that will come promptly once received.