With built-in Wi-Fi, tons of interoperability, and high-level accuracy across 14 body composition metrics, the Etekcity HR Smart Fitness Scale offers everything you could want from a smart scale at a reasonable price.
With support for 13 trackable body composition and health metrics, plus modes for weighing babies, luggage, and pets, the affordable Wyze Scale X is the best smart scale for most people.
The $79.99 Arboleaf Smart Fitness Scale tracks 14 metrics, helps you make sense of your measurements, and supports Wi-Fi for greater convenience than Bluetooth-only scales.
It has some limitations, but for less than $20, the Wyze Scale S is one of the most affordable smart scales for tracking your weight and body composition metrics over time.