No Returns and Not for Keto
Lumen does not allow returns - at all - because they know that this product does not work for everyone and want to keep the consumer's money!!!! Most products offer a 30-day return period so I decided to try the product. 1st con- I'm on a keto diet and Lumen doesn't give accurate readings for people following a keto or carnivore diet. 2nd con- you need to pay for a subscription to their app after the first 30 days to get the most use out of the product. Well, not me because the readings are going to say I'm burning carb when really burning fat for fuel. So, I wasted my money and I came to this site before buying. I hope this review helps someone to not make the same mistake I made. Amazon has keto breath meters for $80.00.