This scale served me well enough for 6 years. But after I changed the batteries, the scale just stopped displaying measurements. The app and scale won't reconnect via Bluetooth. The scale measured weight as well as guesstimated fat, muscle, and water content. I never expected highly precise measurements from the scale. The record keeping was good and long lasting. (Unlike a certain activity tracker.) Now I need a new scale. It may be a Withings. Or it may not.I consider myself a pretty tech-savvy person. My technology is usually pretty new and I worked at a very large, very well known, phone/tablet/computer company for six years. We carried the 1st generation of this scale back then. I've wanted a smart scale for a long time but never could justify the purchase. I started a diet a couple of months ago and after a few weeks of plateauing, I was hoping a smart scale could help give me some more insight -- maybe my weight isn't going down because my muscle mass is increasing. I did some research and finally decided to take the plunge.I've really been disappointed with this scale since getting it.1) Setting it up wasn't the best experience. The technology here is confusing. Setting it up on my phone was easy. It joined my wifi, I downloaded the app, I stood on the scale, my weight went into the app. Then I helped my boyfriend set it up on his phone. It made him use bluetooth and then wifi. It was weird and clunky. He didn't like it.2) After I set it up with my boyfriend's phone, it stopped syncing with mine. I read their support -- maybe it has to do with the bluetooth -- but then I opened the app and 12 hours after standing on the scale, my weight was there. But then another day it never comes over. It works and then doesn't. But then sometimes it does again. Sometimes it waits a day and then I can see yesterday's weight. It doesn't matter if I open the app right away after standing on the scale. Usually nothing comes over.3) It is supposed to sync with MyFitnessPal. I even see a friend who uses it. His timeline will say that he lost a pound and it came from Withings. Mine doesn't do that. I don't know why. All the settings have been configured.4) Also for something that is supposed to sync with your other apps, the steps and calories are always completely different than what I recorded in MFP. I also don't like that this scale gives you a daily calorie goal (which was way too low). It makes those features of the app pointless. I've looked and my Apple Watch + MFP have me at 10K steps for the day and the Withings scale/app says I've gone 6K.5) The app looks NOTHING like the mock ups do. In fact, I was kind of upset. Why do they completely lie about what the graphics look like? The app is crap compared to how they make it look in marketing. It doesn't really make sense to me.6) It is supposed to give you the weather. I stand on it, not moving, waiting. It doesn't give me the weather. My boyfriend stands on it, and it gives him the weather. I'm pretty sure this scale hates me.7) It gave us a warning that it can't work over 5G internet. Get with the times.I read their support. I have everything configured. Maybe my internet is too fast (ha!). All I know is if you're going to drop $140 on a SCALE it should work a lot better than this.Sending it back. Going back to a non-smart scale.This works as advertised. Once I downloaded the Withings app & registered on their site, the scale set up fine.The Withings app integrates into my phone's health app, but the scale doesn't integrate directly. I had to create a user account with Withings, and I keep the App running in the background. (along with all the other apps that operate this way -- grr)If you're buying other health monitoring devices, consider looking at all the devices a manufacturer supports. Not all manufacturers support the same functionality. Heart rate is common. Oximeter is another. Blood pressure monitor is another. There are few heart rhythm monitors, and none tie into the apps that support the other functions. Some sell Glucometers.Know what you want to track first. If your experience is like mine, you may have to buy from a few manufacturers, register with them, and run all their apps. (groan)Other gotcha I should have seen: how health devices determine what device to sync with. This scale knows whether my wife or I are standing on it. (and sync's accordingly) Oximeter we bought can't differentiate. (sync's with the device it can reach) Lesson: some things can be shared, and others "require" multiple purchases.Look at your needs & assess wisely. I'm satisfied with this scale.My wife and I had purchased this scale for a wellness challenge at work. We wanted to have a way to better track our body's changes over time, with a little more information that a regular scale.This scale is awesome. So awesome that we have convinced peers to purchase one as well. Keep in mind, it will require a companion app on your iPhone or Android to be able to track your data, so you will need a smart phone to have access to those features.It is able to have multiple users, and can recognize those users based on their body composition. You can measure body fat percentage, bone mass, hydration percentage.. it can even tell you the weather and show you a graph of your progress after 8 weigh-ins.I'm not sure if Withings/Nokia changed this with the recent update to their app, but adding a family member is a little unclear during their setup. How we did it was to have my wife set up this scale, then invite me through their app. You should receive an email with your invitation to use this scale, and that will link the scale to the companion app. If each person tries to set it up using the instructions in the app, the scale will not show up during the Bluetooth Pairing section (since it is already paired to one person's phone). So... have one person set it up, then invite any other people.So far, my wife and I very happy with this scale.Overall i like the integration with Google Fit, and the seamless updates of the readings (step on the scale for about 10 seconds and your data is in the app right away, you don't have to do anything). This simple fact alone means I use it very regularly.The BMI and other readings seem inaccurate but in an almost predictable way - people with clearly more or less BMI do register as such, but I don't think the precise value is correct. Weight readings, on the other hand, seem to vary within a 5lb range. You can step off and back on again and get an entirely different reading. I'm not a person whose weight changes by much from day to day, so the device is useful for tracking trends and of course as a preventative for any drastic changes that could signal a health alert. I think for that reason its worth having something like this device.Excellent scale.Not had any issues others have reported. Setup was a breeze, and my wife and I use it now with two independent Withings accounts. We simply step on it and it recognises who we are and transmits that data to our Withings accounts.From the Withings Account, we have that set to share date to both Apple Health and My Fitness Pal and it all updates without having to do anything.What more could we want. It works.Easy to setup, you have to use Nokia Health mate app, and setup a Nokia online account, the app was updated in June 2017, and totally ruined the Withings version, I wish Nokia would have kept the original and renamed to Nokia but no they designed a new one that's terrible.The scales are very good, quality, the display is very clear, and it automatically recognises uses, and logs to their own account. I've lost 10lbs in 3 weeks, combining the fitness app linked to health mate, so I'm very pleased, it would get 5 stars if the Withings app was still availableI'm not a big user of the app so the Nokia/Withings switch hasn't bothered me as much as others. I generally use the scale as a rather expensive standalone which shows me a graph of my weight readings each morning. That bit is fine and helps motivate me to do a bit more each day. However its accuracy certainly leaves a lot to be desired. I'm aware that domestic scales aren't calibrated to a standard so can vary significantly between each other, but this one has problems with itself. Weighed myself this morning three times consecutively and the readings were 0.5kg apart. That's a lot...Had no issue so far. Seem very accurate and match scales at the gym and my parents house. I love the features and I love that they upload to the cloud via WiFi. We even managed to get reading from our builders who decided to weigh themselves. I recently got an email as my weight increased slightly to help me keep back on track. Since using for 3months I've lost 10kg's and feel in control of my body. My girlfriend loves it too and has also had similar results. We're both early 30's and have average bmi. The weather feature at the end is a surprisingly useful feature. I have my doubts about the fat/muscle/water % calculator.I purchased these scales as the reviews I had read gave them a good score for accuracy. Having used them for while and comparing them with the previous scales used, they do seem to be more consistent. I thought the WiFi and app availability was just gimmickry, however having now used it and also adding a Steel HR activity tracking watch to the app, I am very impressed.