Unified Activity Score: One Metric Across 500+ Devices

Every wearable has its own proprietary activity tracking: Garmin's Body Battery, Fitbit's Active Zone Minutes, Whoop's Strain Score, and Apple's Activity Rings. For developers building with data from wearables, this means one thing: complexity. 

Enter Spike Activity Score: a single, unified 0-100 score that works across 500+ supported devices.

The activity data problem

Most wearables use proprietary activity scores, meaning developers must determine a unified value that consistently represents activity across all devices.

For developers, that translates to:

• Fragmented data formats that require custom parsing logic for each device integration
• Users lose data continuity when switching devices, losing engagement, and historical trends
• More time spent cleaning data, less time building core app features that differentiate your product
• Inconsistent user experiences where identical activity levels produce different scores based on device choice

This forces development teams to choose between supporting multiple devices poorly or investing significant resources into normalization logic.

The power of Spike Activity Score

Spike algorithms process raw values to generate a single, unified score representing overall activity intensity. The Activity Score was designed to provide a simple, comparable measure of how active a user’s day was. 

• Simple to understand: a higher score equals higher activity.
• Objective: based on the user’s individual activity patterns.
• Comparable: consistent scale across devices, users, and platforms.
• Convenient: no need for device-specific scoring logic.

This single metric is ideal for dashboards, daily summaries, challenges, and trend analysis,  wherever users need an overview of their effort.

Real-world use cases

A unified Activity Score unlocks new opportunities for apps and platforms that use activity data.

Health and fitness apps

Track activity levels and deliver personalized insights and motivation with consistent activity tracking across devices. Regardless of whether your users are focusing on increasing steps or hitting personal records at the gym, the unified Activity Score allows your apps to improve user engagement and retention, especially when paired with other Spike Health Insights.  

Health coaching apps

Monitor client progress with reliable activity data across any wearable device. Whether your clients wear Apple Watches, Fitbits, or Garmin devices, the unified Activity Score ensures coaches can accurately track adherence to training plans and adjust recommendations based on consistent metrics rather than device-specific inconsistencies.

Corporate wellness platforms

Create engaging company-wide wellness challenges with fair, standardized scoring across all employee devices. The unified Activity Score eliminates the competitive disadvantage that comes from wearable differences, allowing HR teams to boost employee participation and measure program ROI with confidence that activity data is comparable regardless of device choice. 

Women’s health apps

Deliver personalized training recommendations by correlating activity patterns with menstrual cycle phases. The unified Activity Score enables your app to identify optimal workout intensity throughout the cycle and provide data-driven guidance on when to push harder or prioritize recovery, helping users achieve fitness goals while honoring their body's natural rhythms.

Part of Spike Health Insights

The Activity Score is one of four key Spike Health Insights, alongside Sleep, Stress, and Recovery: unified, 0–100 health scores designed to make physiological data meaningful and comparable.

Together, these scores enable you to easily add valuable insights that improve user experience and help your app stand out in the market. By offering a holistic view of health rather than isolated metrics, you create stickier products that users return to daily.

Available now

Activity Score is available now as part of Spike Health Insights for Tier 2+ clients. If you're already using Spike API, it's already included in our plan. Check out our developer documentation to see how you can implement it.

Not using Spike yet? Schedule a demo to see how unified health scoring can enhance your app's user experience.