industry consumer electronics founded san francisco california united states october 2007 2007 10 1 founders james park eric friedman headquarters san francisco california united states area served international key people james park ceo eric friedman cto products fitbit tracker website www.fitbit.com fitbit inc. is an american company known for its products of the same name which are activity trackers wireless enabled wearable technology devices that measure data such as the number of steps walked heart rate quality of sleep steps climbed and other personal metrics . the first of these was the fitbit tracker . the company was founded by and is managed by james park and eric friedman and is headquartered in san francisco california . on may 7 2015 fitbit announced it had filed for ipo with a nyse listing . 2 the ipo was filed for 358 million . 3 the company s stock began trading with the symbol fit 4 on june 18 2015 . 5 after fitbit s stocks fell more than 50 % in 2016 the company s ceo james park announced in october that the company was undergoing a major transformation from what he called a consumer electronics company to a digital healthcare company . 6 contents 1 products 1.1 fitbit tracker 1.2 fitbit ultra 1.3 fitbit one 1.4 fitbit zip 1.5 fitbit flex 1.6 fitbit force 1.7 fitbit charge 1.8 fitbit charge hr 1.9 fitbit surge 1.10 fitbit aria 1.11 fitbit blaze 1.12 fitbit alta 1.13 fitbit charge 2 1.14 fitbit flex 2 2 mobile apps 3 fitbit connect for mac 4 website 5 reception 5.1 awards 5.2 privacy concerns 5.3 accuracy 6 see also 7 references 8 external links products edit this section contains content that is written like an advertisement . please help improve it by removing promotional content and inappropriate external links and by adding encyclopedic content written from a neutral point of view . august 2016 learn how and when to remove this template message fitbit ultra activity tracker in teal clipped to pocket fitbit tracker edit the fitbit tracker was a small black and teal device that could be clipped discreetly onto clothing and worn 24 7 . it uses a three dimensional accelerometer similar to that in the wii remote to sense user movement . the tracker measures steps taken and combines it with user data to calculate distance walked calories burned floors climbed and activity duration and intensity . it uses an oled display to display this and other information such as the battery level . it also measures sleep quality by tracking periods of restlessness how long it takes the wearer to fall asleep and how long they are actually asleep . 7 a wireless base station is included to receive data from the tracker and to charge its battery . when connected to a computer the base station will upload data to the fitbit website where a number of features are available seeing an overview of physical activity setting and tracking goals keeping food and activity logs and interacting with friends . use of the website is free . the fitbit classic tracked only steps taken distance traveled calories burned activity intensity and sleep . at the techcrunch50 during the mobile session on september 9 2008 8 fitbit received positive reactions during its panel from experts like rafe needleman tim o reilly and evan williams who cited its wearability price and lack of subscription fees . fitbit ultra edit a hardware upgrade called the fitbit ultra was announced on october 3 2011 . 9 the new features included an altimeter that measures elevation gain in terms of floors with one floor roughly equivalent to ten feet a digital clock visible on the device s display a stopwatch that can be used to time activities randomized chatter messages show when the ultra is moved after sitting idle for a while and there s a custom field to write in a personal greeting . new colors plum or blue as opposed to the original teal the fitbit ultra is powered by a small lithium polymer battery . 10 the fitbit ultra suffered from a small design flaw the unit had a permanently curved shape in order to clip directly onto any piece of clothing . the plastic used in the unit was not appropriate for the strain experienced at the looped end and with time would become brittle and crack . while most users experienced only minor cracking with no effects to the device s function in a few cases the cracking led to total failure mostly the case splitting and screen ceasing to function . 11 12 13 fitbit offered replacement or repair of affected units under warranty . fitbit one edit a white fitbit zip showing the distance in miles covered by the wearer announced on september 17 2012 the fitbit one is an update to the fitbit ultra that uses a more vivid digital display has a separate clip and a separate charging cable and wireless sync dongle . 14 the fitbit one and the fitbit zip were the first wireless activity trackers to sync using bluetooth 4.0 or bluetooth smart technology . the wireless syncing is currently available on ios and android devices such as the iphone 4s and higher ipad 3rd generation ipod touch 5th generation samsung galaxy note ii and higher samsung galaxy s iii and higher lg g2 htc one moto x and nexus 4 or higher . 15 fitbit one can record several daily activities including but not limited to number of steps taken distance travelled on foot number of floors climbed calories burned vigorously active minutes sleep efficiency delicate movements during sleep number of wake ups during sleep etc. fitbit zip edit announced on september 17 2012 the fitbit zip is roughly the size of a united states quarter and tracks only steps taken distance traveled and calories burned . compared to the other fitbit trackers the zip is the first fitbit product to include a disposable battery . it is priced cheaper than other fitbit trackers . similar to the fitbit one it is able to sync its data wirelessly to supported mobile devices such as the iphone 4s and higher ipad 3rd generation ipod touch 5th generation samsung galaxy note ii and higher samsung galaxy s iii and higher lg g2 htc one moto x and nexus 4 or higher . 15 fitbit flex edit fitibit flex with accompanying wristband fitbit flex stand in may 2013 fitbit released the fitbit flex which is worn on the wrist . it tracks movement 24 hours a day including sleep patterns . it has a simple display of 5 led lights that indicate the number of steps walked in a day and it vibrates to indicate when the wearer s goal has been reached . the lights also indicate battery level . the fitbit flex has almost all the same sync functions as the fitbit one and zip . the flex is the most water resistant tracker though can not be worn while swimming . 16 it includes a specialized usb charger ; the battery lasts 5 7 days and it takes 1 2 hours to charge . fitbit force edit the fitbit force was announced on october 10 2013 . it has an oled display 17 that shows time and daily activity . the force tracks a number of statistics in real time including steps taken distance traveled calories burned stairs climbed and active minutes throughout the day . at night the force tracks sleep and can wake a user silently with a vibrating alarm . on january 13 2014 it was reported that an unconfirmed number of fitbit customers had complained about skin irritation after wearing the force for extended periods of time . 18 fitbit stated on its website that the company consulted with medical professionals whose assessments are that these irritations are most likely allergic reactions to nickel a component of the surgical grade steel or the adhesives used to assemble the fitbit force . 19 fitbit working with the consumer protection safety commission recalled the fitbit force on february 20 2014 . 19 on march 12 2014 the consumer product safety commission cpsc made the recall official . 20 at that time it was revealed that the fitbit force had caused about 9 900 injuries . 20 it is no longer for sale on fitbit s website . fitbit charge edit announced in october 2014 the fitbit charge is a replacement for the fitbit force . it was released in november 2014 for us 130 retail . unlike the force charge s wrist band is textured and can display caller id information from a connected smartphone through the fitbit app . the charge automatically tracks users steps sleep flights of stairs using an altimeter and an approximation of distance traveled . it tracks steps using a 3 axis accelerometer by tracking forward movement along with slight upwards through movements . both the charge and the hr version register each step almost exactly half through the step . 21 22 fitbit charge hr edit fitbit charge announced in october 2014 and released in early january 2015 the charge hr is the charge plus a heart rate monitor and a calorie counter . with this addition the 7 day battery life is reduced to 5 days . the charge hr has the same textured band as the charge and comes in black plum blue tangerine pink and teal colors . the charge hr band clasp resembles that of a traditional watch instead of the snap on band of the original charge . 23 24 25 fitbit surge edit fitbit surge announced in october 2014 the surge is like a smartwatch as well as an activity tracker and aimed for the fitness demographic . it includes a heart rate monitor and the ability to track pace distance and elevation using the gps on the device . the surge also can send alerts of text and incoming calls from a connected smartphone . fitbit aria edit fitbit aria in april 2012 26 fitbit released a weighing scale called the fitbit aria . it recognizes users who are wearing fitbit trackers and measures weight body mass index bmi and percentage of body fat of the user . it can keep track of eight individual users and updates information to fitbit.com automatically via wi fi network . 27 the information is also updated to the mobile apps . fitbit blaze edit at the ces event in january 2016 28 fitbit announced a fitness watch called fitbit blaze . it is similar to a modern smart watch such as apple watch pebble smart watch and android wear watches . the blaze focused on fitness first then smart features inside the watch . unlike the surge the blaze comes with a colored touchscreen and exchangeable strap and frame . some functionality from the surge has been retained such as auto tracking exercise and heart rate monitor . blaze has connected gps 29 meaning it can track movements by using the connected smartphone s gps . the user can receive notifications including incoming calls texts and calendar appointments on the blaze . 30 the fitbit blaze also integrates with fitstar fitbit s website for customized workouts . these workouts can be displayed on the blaze s screen . 31 fitbit alta edit the fitbit alta 32 has the features of standard fitbit wristbands but lacks heart rate monitoring and an altimeter so it does not track flights of stairs . it can be used for tracking exercises and sleep . the wristband offers a full oled touchsreen that you can tap to see your reminders a clock and smartphone notifications . the alta is also able to recognize the type of activity you are doing running playing football or just walking . fitbit charge 2 edit the fitbit charge 2 has many similar features as the charge hr which it replaced