Wear Radar

Xiaomi Smart Band 9vsCOROS Apex

Xiaomi Smart Band 9
Buy/Wait:bad

Overdue for a refresh — no successor announced yet. Prices should be at their lowest

Best for: Anyone who wants basic health tracking — steps, sleep, heart rate, SpO2 — without spending more than $40 or carrying a bulky watch. Works with both iPhone and Android. A popular choice for kids, older adults, and budget-conscious fitness beginners.

Full details →
COROS Apex
Buy/Wait:bad

Overdue for a refresh — no successor announced yet. Prices should be at their lowest

Best for: Trail runners, ultramarathon athletes, and multisport competitors who want full maps and long GPS battery without paying $900 for the Vertix. A strong alternative to Garmin Forerunner 965 for users who prioritise battery over display quality.

Full details →
Xiaomi Smart Band 9COROS Apex
TierFitness TrackerSports GPS
PlatformiOS & AndroidiOS & Android
Battery14 days45 days
Always-on display
GPS
Cellular
Health sensorshr, spo2, stress, sleephr, spo2, hrv, training load, skin temp
ReleasedJul 22, 2024Sep 14, 2022
Cycle length365 days1047 days
Cycle advicebadbad
Deals advicegoodgood
Next model

Why buy each?

Xiaomi Smart Band 9

AMOLED always-on at under $40

Most fitness trackers at this price use basic LCD displays. The Smart Band 9 brings a vivid AMOLED always-on screen — rare at this price point.

14-day battery with health monitoring

Continuous heart rate, SpO2, stress, and sleep tracking — all running for 2 weeks before charging. Most smartwatches last 1–2 days.

Works with iPhone and Android

Full functionality on both platforms via the Mi Fitness app, including notifications, sleep analysis, and health trends.

COROS Apex

75 hours GPS, 45 days typical

Enough for 3-day mountain stages without charging — a critical advantage for ultra-distance racing.

Full topographic maps

Breadcrumb + full TopoActive-style maps for turn-by-turn navigation on trails, mountains, and roads.

Titanium case and sapphire glass

Lightweight yet scratch-resistant materials that hold up better than most competitor watches at this price.