Fitbit Aria 2
Fitbit Aria 2 is a scale from 2017, sitting in the mid-range band at an indicative $129. It is no longer sold new. It stays in this comparison because plenty of people are still wearing one.
It reads 2 of the 33 signals this comparison tracks. Nothing at all from heart and vitals, sleep, activity and fitness. Rarer readings it does take: weight and body fat.
By sensor class: 2 at consumer grade. That grade is my classification of the hardware, not a lab test. Those readings come from bioimpedance electrodes.
It weighs 1814 g. No subscription is required.
Discontinued (2020) Wi-Fi scale; BIA weight/BMI/body-fat (Aria Air dropped these).
Key specs
What it tracks
Body composition
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Turn a supported wearable into daily health scores
MyBodyAI reads COROS, Oura, Polar and Withings by logging in, Fitbit and Pixel Watch through Google Health, and Garmin through the Android app or a data export, then builds daily recovery, sleep, load and immune scores, a biological age estimate, and early warnings. Optional, and separate from this comparison.
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