Reviews (1)

I've had the Lumen device for a week and have been using it faithfully. It's kind of fun to check in on whether I'm burning fat or carbs or a mix of the two but I have serious doubts about its accuracy. More on that later.

There is no way to enter what you've eaten so that they know your macros in whatever way they choose to measure them (I measure based on the percentage of calories eaten, they want to measure in the number of grams per macro, which I find very inconvenient). Being able to interact with MyFitnessPal or another tracking app would be easier on the users and would give the device much more precise information than what I can currently enter. Every morning it asks if I followed the previous day's plan and there's only a "yes" or "no" choice. There's no way to let it know exactly how much of what macro was consumed. I feel like that one tweak would be a HUGE improvement and make it easier to use accurately.

The app lacks a lot in interactivity (see above). When taking a midday breath reading it gives you a few choices for why/when you're taking a breath (after a low or high carb meal, after a fast, etc.) but there's usually no way to customize it and note exactly what is going on when I decide to test my breath. I have been taking a breath reading when I first wake up and then again when I break my fast (usually 4+ hours later) and there's no way to indicate that my fast lasted longer than was recorded at my first breath.

The app is very sparse as far as information goes. There are a few short entries on what is considered a carb, for example, and a few other short informational blurbs but there's not much in-depth info. I would love to see a lot more info on everything from recipe suggestions for high or low carb days to a members-only area where users can "meet" and ask/answer questions. Something like a closed Facebook group that is moderated by Lumen staff would be fantastic. I have so many questions and no real way to get them answered besides the chat feature on the website.

I like what Lumen is trying to do and I have high hopes for it going forward as they learn ways to make it better but right now it feels like it's still in its infancy in terms of development. I wouldn't recommend this to others until the company (and what they offer) has matured to meet the larger needs of those who have spent almost $300 to use it. I hope that they will treat us early adopters well as updates happen and reward us for sticking with them through their growing pains.