Customer Ratings & Reviews

I bought this for my wife 2 months ago. She drinks her coffee rather slow and it always got cold before. Now using the Ember Mug, she easily controls the coffee temperature via her iPhone. Now it never gets cold! She only uses it once a day (morning), so she has never ran out of battery life while drinking. I would recommend the large mug, she usually makes a cappuccino with 2 shots in it and it’s barely big enough. I would have regretted getting the small one.

I loved using this mug for the 18 months it lasted for. It kept my coffee hot for a few hours, longer if I let it sit on the charger by my desk. First the good: When it works, it does a good job at maintaining the configured temperature. It's a great concept, isn't too heavy, and has a decent battery life if you enjoy sipping coffee or tea. The ugly: After 18 months, the ceramic coating began to flake off the lip of the mug. I only ever washed it with a soft bottle brush. Ember claimed the coating was FDA approved so would not harm me if ingested and offered me 20% off of a replacement mug which costs almost as much as the retail packaging. Since I'd rather not like ceramic flakes with my coffee I'm no longer using the mug, and given how expensive the mug is, I'm not considering replacing it. The bad: the software just isn't great. It constantly tries to pair with the mug and requires periodic factory resets to fix pairing issues, causing me to lose my mug customization. Physically powering off the mug and force killing the android app seems to prevent these issues. Ember doesn't have an e-waste recycling program for when the battery hits its end of life, and it's not replaceable. They encouraged me to bring it to Best Buy for recycling instead. When the battery runs out of power, the existing insulation in the mug does a poor job of maintaining temperature as well- I get better thermal performance from a ceramic mug. Conclusion: gets bonus points for a neat idea, but if it's only going to hold up for 18 months, I say stay away. Buy a dishwasher safe sealed insulated mug instead- it may not maintain the temperature with the same precision, but it'll last longer and is significantly less costly.

Mug shows charged to %100. As soon as I take it off of the charging coaster the percentage drops below %90. It doesn’t last anywhere near the advertised 80 minutes at a setting of 136 degrees. When on the coaster the battery still dies if keeping coffee hot and will randomly shut off saying the cup is empty. Notifications show up continuously once the beverage has reached your set temperature. I had to shut them off. I have attempted to contact Ember 3 different times for support with absolutely no success. They never follow up or contact me at all. If it stopped working tomorrow, I would not spend the money again. For the price, I had hoped for a higher level of service from Ember. Realistically, I might have been better off with one of the cheap ones from Amazon.

I received this item as a gift. It has changed the way I enjoy coffee each day. I don't know if I'll ever be able to use another mug again. It works perfectly at keeping my coffee at just the right temperature. I have found the App to be very helpful and easy to use in setting how hot I would like my coffee to stay at. This mug even heats my coffee up after I've added cream! I can't say enough about how happy I am with my purchase. I am now working to convince everyone in my office to get one too!! It's a luxury you will enjoy!

This cup definitely keeps the drink warm much longer. Which is exactly why I got it.

The Ember mug works well for tea, and there is a setting for green tea, which is what I normally drink in the morning. The mug keeps the tea at the temperature that I prefer all day. Without the charging base, the battery goes out in about an hour, so I keep the base plugged in and the mug keeps the charge all day. One negative is my Android phone does not keep the blue tooth connection.

Works well to keep coffee the exact temperature I like. Easily controlled with app. If not on the charger the battery is enough to keep coffee warm about 75-90 minutes based on my experience. Easy to charge just put it on the charger stand. Easy to clean with soap and water.

Really nice and sleek cup! Keeps liquid hot! Very good!

I’ve been using the Ember Smart Mug every day since I bought it, and I can honestly say it’s a game-changer. I used to constantly reheat my coffee, but now it stays at the perfect temperature from the first sip to the last. The app is super easy to use, and I love being able to set my preferred temp (135°F is my sweet spot).

Awesome addition for a coffeeholic. Great temperature controls and nice ergonomic design.

Easy to use, sleek design and keeps liquids at perfect temp

It works exactly as i expected, and its just amazing. Not a lot of battery, but just leep the charger nearby.

I purchased the Ember a week ago and i absolutely love the fact that it is easy to set up and use. The product works as advertised and keeps your drinks at your desired settings. I will be buying more as Holiday gifts. Taneisha Howell

Overall a decent product if you can keep the mug charged. If the mug is removed from the charging coaster, it will only last around one hour or maybe a little less than two. I personally will not purchase a second Ember mug and will wait for the next generation which hopefully will have a longer battery life. Otherwise, the mug is easy to clean, offers good size for tea or coffee, andis a pretty product.

The mug itself is great and is a game changer for people who take their time enjoying a cup of coffee and who sometimes set that cup down and forget about it until it’s too cold. I’m sure building this isn’t cheap but the fact that I waited for it to go on sale, used a gift card for part of the cost and it STILL was too expensive is a huge disappointment!

I like the design and comfort of the handle. The flat design is the most comfortable for holding/gripping the mug.The lip is not thick also. I've had no problems with the app. Too bad the battery only lasts 1 1/2hr. before charges. The price is a bit excessive, but Im keeping it.

This is my third cup once you have one it’s hard to do without it.the first one lasted about a year and a half the second one was new and didn’t perform as well as the first one so I took it back. The one I have now works so well the coffee burns your mouth. Great cup

Got this as a gift from my husband so I would stop leaving my mug in the microwave. It is great, I love that I can set the temp I want on the app and take it with me around the house or the office. PS don’t tell my husband, sometimes I forget to put it back in the charging base and my coffee gets cold anyway lol

The ember mug exceeded my expectations. The mug feels high quality and looks really nice as well. It keeps my coffee just as hot as I poured it till the very last drop. It cleans up well, the app is simple and easy to use, and the charging feels futuristic. I would recommend this to anyone who hates when their drinks get cold, this is the perfect solution.

I recently purchased the Ember Temperature Control Smart Mug in blue and have been extremely satisfied with its performance. The mug has a sleek and modern design that looks great in any setting. The temperature control feature is a game-changer, allowing me to set the exact temperature of my coffee or tea and maintain it throughout the day. The 14 oz capacity is perfect for a single serving and the mug keeps my drinks hot for hours on end. The mug is also very easy to use, with a simple button interface and the ability to control it via a smartphone app. I also appreciate that the mug is made of durable materials and feels high-quality in my hand. Overall, I highly recommend the Ember Temperature Control Smart Mug² to anyone who values having their drinks at the perfect temperature all day long.