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title: Pebble SDK 3.10-beta1 - Changelog
date: 2016-02-15
---

This is a pre-release SDK, containing a preview of the new Pebble Health
API.

### Changes to Firmware

* Added energy (Calorie) usage to the Health app.
* Changed "till" to "'til" in the low battery modals.
* Improved firmware stability.

### Changes to SDK

* Added ``health_service_get_measurement_system_for_display`` to retrieve the user's unit preference.
* Added ``health_service_sum_averaged`` and ``health_service_metric_averaged_accessible`` to access
  average health data. These can be used to determine the goal line used by the Pebble Health app.
* Added ``HealthMetricRestingKCalories`` and ``HealthMetricActiveKCalories`` to retrieve Calorie burn
  information from Pebble Health.