Amazfit Bip Max - Best Budget Watch? (Scientific Review)
In a Nutshell
The Amazfit Bip Max delivers strong heart-rate accuracy across running (0.99 correlation) and outdoor cycling (0.97), with overall HR scoring 95.8/100 and sleep-stage agreement around 80/100—making it one of the best-performing sub-$100 wearables tested. GPS tracking is merely average (65/100), and weight-lifting HR is weak, but the device still offers solid data quality, a square form factor, and fully free basic features via the Zepp app. For anyone seeking an affordable sports-smartwatch without subscriptions, the Bip Max is currently the strongest budget option.
These notes were generated by AI and may contain inaccuracies.
These new sub $100 wearables are pretty crazy. The Amazfit Bip Max is performing really well in testing. There are a few limitations, but for just $100, the device seems to be doing really well in a lot of categories. The reviewer is Rob, a post-doctoral scientist specializing in biological data analysis, focusing on data analysis of the health tracking features of the new Amazfit Bip Max. For $100, the device offers a pretty good screen, a nice form factor, and pretty good performance.
The heart rate tracking performance during indoor cycling was tested with the reference device being an ECG chest strap on the horizontal axis and the Amazfit Bip Max on the vertical axis. Each point represents a single heart rate measurement. Most points are quite close to the blue line with perfect agreement, though there is one moment of deviation. The correlation is 0.91, which isn't quite as high as hoped, but still pretty okay. One specific moment showed the device missing the first interval detection.
Unfortunately, only a single session was available for indoor cycling due to a problem with one of the reference measurements. Two total sessions were started, but one had to be excluded.
When comparing the correlation value to the competition, indoor cycling is the one cardio exercise where the device didn't perform amazingly. The Amazfit Bip Max is rather low in the overview, close to the Ultra 2 from Amazfit. Better performance would be expected roughly in the area close to the T-Rex 3 Pro, Active Max, Cheetah 2 Pro, and Active 3 Premium. With more testing, the device might end up higher given that it isn't very heavy.
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