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Amazfit Helio Strap adds support for tennis in latest update

Amazfit Helio Strap with Zepp Health app (Image source: Amazfit)
Amazfit Helio Strap with Zepp Health app (Image source: Amazfit)
In a recent update on the Zepp app, tennis lovers can now track their favourite sport with Amazfit Helio Strap. The update includes optimizations for BioCharge energy algorithm, nighttime heartrate measurements, and other big fixes.

Amazfit's Helio Strap has been around since June this year and the screenless fitness-tracking wristband has quickly gained traction among sports enthusiasts worldwide. However, the Helio Strap only supported 27 sports at launch, compared to a whooping 177 featured on some of Amazfit's smartwatches (like the T-Rex 3 we reviewed). Naturally, users complained, with ball or racket games being the most frequently requested feature. Thanks to recent firmware update 3.3.6.1, the companion Zepp Health app now supports a dedicated Tennis Mode, among other UI upgrades.

Previously, tennis training with the Helio Strap involved a hit-or-miss approximation of the activity. With the new update, users can properly track training sessions while the gadget guages workout intensity via heart rate data. This information is now displayed visually on the Zepp workout profile.

The release notes also show an optimized BioCharge algorithm. BioCharge is Amazfit's spin on Garmin's Body Battery feature and should adapt to energy levels based on stress and sleep. So far, this has not worked out as perfectly as theorized in spite of updates, but the new algorithm claims to fix the rapid overnight depletion and low Wake BioCharge scores.

Other features include bug fixes for nighttime heart rate measurements, exaggerated calorie totals during workouts and step miscounts during swimming and cycling. Overall, it is a lightweight 3.4MB update although users will have to be on version 9.13.0 of Zepp to download it. 

Unlike many other wearables for fitness enthusiasts, the Helio Strap does not require a subscription. You can buy the Amazfit Helio Strap fitness-tracker for a one-time payment of $99 on Amazon

Release notes for firmware update 3.3.6.1 (Image source: Gadgets & Wearables)
Release notes for firmware update 3.3.6.1 (Image source: Gadgets & Wearables)

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2025 09 > Amazfit Helio Strap adds support for tennis in latest update
Sarfo Ashong-Listowell, 2025-09-29 (Update: 2025-09-29)