Zepp app 10.4.0 replaces BioCharge with HybridCharge

Zepp Health has started changing BioCharge into HybridCharge in the Zepp app, giving its daily energy score a new name and a slightly broader purpose. The change appears to be app-side for now, as some Amazfit watches may still refer to the feature as BioCharge.

BioCharge gets a broader rethink

Zepp app 10.4.0 introduces HybridCharge as the new version of BioCharge. The app describes it as a daily energy score that combines training and recovery data to assess how ready you are for the day.

The interesting bit is not just the new name. HybridCharge brings subjective inputs into the mix through LifeLoad and RPE. That means Zepp Health is no longer relying only on sleep, heart rate, activity and recovery data. It also wants to know what happened in your actual day.

That is a sensible direction. Wearables can estimate plenty from the wrist, but they still miss context. A watch might see decent sleep and a normal resting heart rate, but it does not automatically know you feel sick, sore, stressed, mentally drained or unusually motivated.

LifeLoad gives the score more context

The new LifeLoad log lets users record daily factors that could affect recovery and readiness. The screenshots show options such as feeling sick, muscle soreness, joint pain, injury, feeling fatigued and feeling energized. Each can be marked as low, medium or high impact.

There is also a chat-style logging option, which could make the feature easier to use if Zepp Health keeps it simple. It might be easier than manual logs whichoften sound useful at launch, then quietly disappear from people’s routines after a week.

Still, the thinking is solid. HybridCharge tries to combine objective signals from the watch with subjective context from the user. That should give the score a better chance of matching how someone actually feels.

Training Focus adds a practical layer

Training Focus is the other useful part of this update. Rather than treating readiness as a single daily score, Zepp Health is now trying to steer users toward the type of training that best fits their recent load.

The app breaks the past seven days into endurance and strength work, with a goal marker showing the intended balance. That should make it easier to spot when training has become too one-sided, especially for users mixing running, gym work and hybrid events.

The Zepp app 10.4.0 notes also mention a HYROX Training Library and HYROX Race Analysis. The Training Library promises structured workouts for different fitness levels and goals, while Race Analysis is designed to review race performance and highlight strengths and weaknesses.

Still early, but worth watching

The rollout still feels unfinished. HybridCharge now appears in the app, but some watches still show BioCharge. That is not a major issue, but it does suggest Zepp Health is changing the app first and will probably clean up the device wording later.

The bigger question is whether users will keep logging LifeLoad events. If they do, HybridCharge could become more useful than BioCharge. If they do not, it may end up as a cleaner name wrapped around a familiar readiness score.