Under $100 there are two default answers in 2026, and they could hardly be more different. Xiaomi's Smart Band 10 is the world's favourite cheap wearable: a $48 AMOLED-screened band that does a bit of everything for three weeks per charge. Amazfit's Helio Strap is a $99.99 screenless arm strap that does one thing, training data, unusually well for the money.
Both come from the same corporate family, Zepp Health makes Amazfit and built its reputation manufacturing Xiaomi's early bands, which makes the split personality even more interesting.
Disclosure: Fitcoin is our product. We are not affiliated with Whoop, Google, Fitbit, Garmin, Amazfit, Xiaomi, Polar, Oura, Ultrahuman, RingConn, Hume Health, Bionny or any other hardware brand named here. We do not sell trackers and we do not take affiliate commission from either side of this comparison, so we have no reason to nudge you toward the more expensive box. Where Fitcoin appears, it is as the rewards and insights app that reads the data these trackers write to Apple Health or Health Connect. Scores described below are wellness estimates for general fitness, not medical advice.
Helio Strap vs Xiaomi Smart Band 10 at a glance
| Feature | Amazfit Helio Strap | Xiaomi Smart Band 10 |
|---|---|---|
| Price | $99.99 | About $48 |
| Display | None | 1.72in AMOLED touchscreen |
| Placement | Upper arm | Wrist |
| Battery | About 11 days | Up to 21 days |
| Water rating | 5ATM | 5ATM |
| Training features | BioCharge, exertion, recovery, 50+ modes | 150+ sport modes, live on-wrist stats |
| Notifications | None | Calls, messages, apps |
| Recovery scoring | Yes | Basic sleep and vitality metrics |
| App | Zepp | Mi Fitness |
| Subscription | None | None |
Two different jobs
The Band 10 is a life accessory. It tells the time, buzzes for messages, controls music, shows your pace mid-run and tracks 150-plus activities well enough for the price to feel absurd. Its weaknesses only appear under stress: wrist optical heart rate wobbles during strength work, and its recovery insight is shallow.
The Helio Strap is a training accessory. No screen, no notifications, no clock. It sits on your upper arm where the optical signal survives barbells and burpees, scores your exertion and recovery in Zepp, and runs its BioCharge energy metric as a readiness guide. Twice the price of the Xiaomi, half the features, better at the one feature that matters to people who train.
Accuracy under load
The physics are settled: gripping and wrist flexion corrupt optical readings at the wrist, and the upper arm avoids most of it. Reviewers rate the Helio Strap's heart rate as excellent for the price and clearly better than wrist bands during lifting, intervals and HYROX-style work. For walking, cycling and daily wear, the Band 10's readings are fine, and its screen means you can actually see them without a phone.
The money question
If your tracker is a watch substitute with fitness leanings, the Band 10 at $48 is unbeatable; nothing else touches its screen-battery-price triangle. If your tracker exists because you train four times a week, the extra $50 for the Helio Strap buys signal quality and recovery scoring the Xiaomi cannot reach. Both export core data toward Apple Health and Health Connect, where apps like Fitcoin convert it into FitScore, partner rewards and Leagues, so neither leaves your effort stranded in a silo.
Verdict: which one should you buy?
Choose Amazfit Helio Strap if:
- You train seriously and want accurate heart rate under load.
- You want recovery and exertion scoring without a subscription.
- You already wear a watch and want the tracker somewhere else.
Choose Xiaomi Smart Band 10 if:
- You want the most wearable per dollar ever sold.
- Notifications, time and on-wrist stats matter to you.
- Three-week battery and a screen beat training-grade accuracy.
Our take: they are not really competitors. The Band 10 is the best first wearable money can buy; the Helio Strap is the best second one, bought when you realise your training deserves better data.
Frequently asked questions
What is the price difference between the Helio Strap and Xiaomi Band 10?
The Xiaomi Smart Band 10 sells for about $48, the Amazfit Helio Strap for $99.99. Neither charges a subscription.
Which is better for gym training?
The Helio Strap, decisively. Its upper-arm placement keeps heart rate accurate during lifting and circuits, and Zepp provides exertion and recovery scoring. The Band 10 is a wrist device with live stats on screen but noisier readings under load.
Which has better battery life?
Xiaomi claims up to 21 days against about 11 for the Helio Strap. Both are comfortably in the charge-and-forget class.
Does the Helio Strap have a screen?
No, it is fully screenless; everything lives in the Zepp app. The Band 10's 1.72-inch AMOLED shows time, notifications and live workout stats, which is most of why casual buyers choose it.
Are both fine with iPhone and Android?
Yes, both support iOS and Android through their apps (Zepp for Amazfit, Mi Fitness for Xiaomi) and can pass core data toward Apple Health and Health Connect.
Method and sources: Written 18 August 2026 from vendor spec sheets and press material, plus hands-on coverage from DC Rainmaker, PCMag, Tom's Guide, ZDNET, Wareable and Trusted Reviews published between May and August 2026. Prices are US list at publication and change often, especially promotional bundles. Battery figures are manufacturer claims unless a reviewer measured otherwise. We do not sell or take commission on any tracker named here; Fitcoin mentions are ownership-disclosed. Wellness estimates only, not medical advice.
Related reading: Fitbit Air vs Xiaomi Band 10, Fitbit Air vs Helio Strap, Whoop vs Helio Strap, Garmin CIRQA vs Helio Strap, best fitness tracker apps 2026
About the author: Harris Khan is the co-founder of Fitcoin. He studied at Loughborough University and has more than 15 years of personal experience across strength training, bodybuilding, Muay Thai and general fitness.