It’s a good product and its compacted size and lightweight is great for travel.
You cannot use the app Sleeplus in the link of the user manual. The link needs to be updated on the user manual; However, you can look for the app named VVFLY YA50 on a web browser. I have an iPhone and with the VVFLY YA50 app, I can pair it onto my iPhone.
One thing, though. The machine itself is quiet; The mask is a bit noisy but acceptable.
I was pleasantly surprised with the strength of the mag-safe attachment, which turned out to be quite secure. It remained attached to the phone while I shook it by the D-ring. The construction is sturdy and the zippers are water-resistant. All in all, 5 out of 5.