Eufy by Anker, Smart Scale with Bluetooth

Edit 7/6/2017: After lengthy and helpful discussions with Jinna from Eufy support, I believe that my scale may have been defective. Anker's internal testing shows that they should be able to detect weight changes as small as 0.2 lbs, while my scale consistently does not show a new weight unless my weight differs by more than 0.6-0.8 lbs from the last reading. Anker/Eufy support was very awesome and offered an exchange or refund even though it was past 30 days since I bought the item. While I still stand by my complaints about the app, I am very impressed by Eufy's outstanding customer service. 5 stars for customer service! Edit 6/22/2017: It's been a week since my Eufy Scale synced with Google Fit. Syncing was always kind of iffy but now it consistently doesn't work. Deducting another star because syncing with other health fitness apps is pretty much an essential feature of a smart scale. I had a Withings Body - Body Composition Wi-Fi Scale, Black that I was incredibly satisfied with, but I gave it away as a gift and couldn't find another at a low price. I was interested in this scale after seeing it crowned the runner-up for the best smart scale and also because the manufacturer is Anker. Coming from a Withings, I was looking for something very accurate and sensitive at measuring weight and that's what I'll be focusing on in this review with comparison to the Withings. I expected exceptional accuracy from this scale since it comes from a pretty good manufacturer, but unfortunately the accuracy of this scale really misses the mark. In order to test the sensitivity of scales, I use 100 g weights and weigh myself with 1, 2, or 3 of these weights to see if the scale can detect changes of 0.1, 0.2, and 0.3 kg. This scale always fails to detect a 100 g weight change, but can detect a weight change of 200 g. HOWEVER, if you increase your weight by 100 g in succession, the scale will continue to read out the exact same weight until you reach a weight difference from your starting weight of 0.3 or 0.4 kg. This indicates that the scale is heavily relying on past measurements in order to determine future measurements, instead of taking a new, independent measurement each time. This is the exact same accuracy as my <$20 EatSmart Precision Digital Bathroom Scale with Extra Large Lighted Display, which means that the extra $30 you're paying is going to smart features, body composition, and hardware design but NOT scale accuracy. And FYI, the Eufy scale agrees with the EatSmart to 0.1 kg and is usually 0.1 kg less than the EatSmart. Having discovered that, I probably would have just waited for another sale on Withings scales, since the most important attribute I value in a bathroom scale is accuracy. I track my weight religiously every day and the accuracy of the Withings lets me figure out exactly how much my weight has changed since the day before. If my weight changes by only 0.1 kg, then the Eufy is sure to not detect it. I only trust the Eufy for changes more than 0.3 kg, which is a considerable amount since my weight tends to change by only 1.0 kg throughout the day. While I focused mainly on weight accuracy, I want to point out that another area where there are huge differences between the Eufy and the Withings is the quality of the smart features. The Eufy scale was quite easy and fast to set up compared to the Withings, but unfortunately that's the only thing that's easier about the Eufy. Since the scale is Bluetooth only, the app has to be open and the scale has to be on in order for your measurements to be sent to your phone. Fortunately, the scale WILL save multiple readings until it reconnects to your phone so you won't lose readings if you don't have your phone open. On the other hand, the Withings scale was a bit harder and slower to set up, since it did a software update when I first turned mine on and I had to connect it to wifi. Seriously, the first setup took almost 10 minutes! But since the scale was connected to wifi, it was able to upload my measurements to the Withings servers even if my phone was off or missing. Since I weigh myself in a rush before getting dressed and heading out the door to work, I found the Withings approach to be MUCH more convenient. Plus, the Withings tells you the weather! Would I recommend this scale to most people? For the price, it definitely wins. However, you shouldn't expect any more accuracy than a $20 scale. The extra $30 pays for convenience and design. If you really want the most accuracy and sensitivity, you will have to splurge on the Withings. Note: I know that I didn't really touch over the body composition features of this scale. Since I don't have my Withings anymore or a body composition analyzer, I'd rather not say anything about it because I can't vouch for the accuracy or reproducibility of the body composition measurements. Pros: * Attractive hardware design * Smaller than the Withings scale * Half the price of the Withings and one of the cheapest good smart scales Cons: * Only can detect weight changes of 0.2 kg/0.4 lbs or greater * Does not take a new reading every time * "Memorizes" past measurements, potentially reducing sensitivity to 0.4 kg if weight changes are too small * Bluetooth reliance requires app to be open in order to sync (however, will save measurements until next sync)