Tinké Fitness and Wellness Tracker with 30-Pin Connector - Monitor Heart Rate, Steps & Sleep - Perfect for Gym, Running & Daily Activity Tracking

Not sure why this white 30-pin model of Tinke has dropped in price recently (<$20, Sept2015,) but I am VERY pleased with it. I purchased a 30pin-to-iOSLightning connector for $29 from the Apple Store (note, 2 cheaper knock-off converter cables purchased online did NOT work) to get it work well with my iPhone5s. The Apple connector does not affect the operation of the Tinke sensor, which is good. So for about half of what the newer lightning model Tinke's cost, this model+converter does the job.Readings from reflective pulse oximeters can be easily distorted from ambient light and movement, so it is best to use this at the same time, in the same location, in the same manner (same finger, same body posture, same room environment) every day.There are many other sensors out there for pulse rate, HRV, pO2 sat, breath rate, but none as affordable as this, that work well with the iPhone, and can log data to see trends. The company Zensorium has a user support forum which is helpful.I am hoping that this model will not be placed on a legacy/sunset status, and the current versions of the app will continue to work with it. Particularly useful to athletes, biohackers, and bioengineer nerds like me is the Zen score -- hopefully Tinke/Zensorium will continue to tweak this algorithm to give us more details than just a number (eg, HRV statistics, pulse/breath coherence, etc.).Overall, highly recommended!It is a great device, bearing in mind there is a 3% variance from clinical medical devices. For people seriously needing to manage their basic health, it is a very useful device. The heart rate and breathing comparison is convenient.I love that it works on the iPhone and stores the readingsMy only complaint is that sometimes I have to repeat the readings several time to get an accurate reading. But as least it tells you when it thinks the results are not reliable due to some error..such as taking the reading in bright light , or when the pressure varies during the reading.The Zen reading is also good for stress reductionDon’t get this, didn’t work even with the 30 pin adapter. Must be old at this point. Note: won’t work on most iPhones today without the adapter (not included) anyway.does not fit I Phone 5 should have a adapter, it does work well good read out happy with the way it workswas no useI did this buzzagent offer for my grandmother whom just had her lower lung lobe removed due to cancer. It is great being it uses the charger port of her iPhone and measures your heart rate, O2 sats, respiratory breaths as well as stress level. I am not sure how exact the O2 stats are but they seemed normal. She liked the interesting facts such as "70% of waste is eliminated through your lungs” and she has started breathing better. While the concept is nice, it's expensive considering performance if you do not need to know what your O2 stats are you can get this same performance form other sensors much cheaper. Also a negative is you have to remove your phone case to plug it in. Overall its great for her use but not sure I would buy it for myself. My review that I received the product as part of a promotion from the brand.This little device is nice to track baseline heart rate, blood oxygen level and respiratory rate. It is a no pain process, except when you experience "low accuracy" and have to repeat measurements. However, without a good amount of healthcare knowledge, the numbers may not mean a lot. I #GotADiscount (45%) through BzzAgent, and will continue using the device after the BzzAgent Campaign is over. However, I don't forsee myself recommending the device to many people.Might be more useful for someone who doesn't use an iPhone or Iwatch.. Didn't fit on my phone without taking my case off which jeopardized my phone