The one advantage to using Keyto for weight loss is their breath sensor, which probably is more accurate and certainly more convenient than urine strips and doesn't require you to poke holes in your skin as with blood testing.
This is the only advantage, however. I can't speak to Keyto's Android app, but the iOS app is shoddily written — it amounts to a food diary, and not a very good one at that. Why, for example, can you not directly transfer the macros from Keyto's extensive recipe database directly into your food intake for the day? Instead, the numbers have to be transcribed by hand from one section of the app to another. That's shoddy.
Support is non-existent — I received no reply to any of the questions I sent to the support staff. The "coaches" are obviously not-so-smart bots.
It's expensive, too, at $29 a month. I wouldn't recommend it.
Bottom Line: No, I would not recommend this to a friend
