Fitbit Air compatibility: What you need to know before buying

At a glance:

• Fitbit Air works simultaneously with Pixel Watch but not other Fitbit devices
• Google plans to enable multi-device support for older Fitbits in the future
• Users must choose between Fitbit Air and legacy trackers for app connectivity

Compatibility with Pixel Watch

The Fitbit Air, Google’s latest screenless fitness accessory, introduces a unique dual-device capability with the Pixel Watch. Unlike traditional companion apps that restrict users to one connected device at a time, Google confirmed to Android Authority that the Fitbit Air can pair with the Google Health app even when the Pixel Watch remains actively connected. This allows seamless transitions between devices, such as charging the Pixel Watch without interrupting health data collection. The feature addresses a common pain point for users who previously had to disconnect or unpair devices manually, streamlining the wearable experience for Pixel Watch owners.

This functionality positions the Fitbit Air as a complementary accessory rather than a standalone device. Its lightweight design and passive wellness tracking make it ideal for scenarios where users might remove their primary smartwatch, such as during sleep or intense workouts. However, the integration relies on Google’s updated ecosystem, which prioritizes newer hardware and software synergy over backward compatibility with older Fitbit models.

Limitations with other Fitbit devices

Despite its multi-device support with the Pixel Watch, the Fitbit Air cannot operate simultaneously with other Fitbit trackers like the Charge or Versa series. Users must choose which device remains paired to the Fitbit app, effectively limiting the Air’s utility as a secondary tracker for existing Fitbit users. This restriction stems from the same technical constraints that govern most companion apps, which typically enforce single-device connections to prevent data conflicts.

The limitation may disappoint users hoping to leverage the Air’s minimalist design alongside their current Fitbit setup. For instance, someone owning a Fitbit Charge 5 would need to disconnect it entirely before pairing the Air, negating the convenience factor Google emphasizes for Pixel Watch users. This disparity highlights a strategic focus on Google’s own hardware ecosystem rather than maintaining parity across all Fitbit products.

Future updates and user considerations

Google has acknowledged plans to extend multi-device support to older Fitbit models, though no specific timeline has been provided. The company stated that this capability will arrive “soon,” suggesting potential updates to legacy devices’ firmware or app infrastructure. Until then, users must weigh the Fitbit Air’s benefits against the inconvenience of device switching.

For buyers, the decision hinges on their existing hardware. Pixel Watch owners gain immediate value from the Air’s dual connectivity, while those with older Fitbits face a trade-off between convenience and compatibility. The Air’s screenless design and wellness tracking features, such as heart rate and sleep monitoring, remain appealing, but its limited interoperability could deter users deeply embedded in the broader Fitbit ecosystem.

Technical and market implications

The Fitbit Air’s selective compatibility reflects Google’s broader strategy to integrate Fitbit more tightly with its own hardware and software stack. By enabling seamless pairing with the Pixel Watch, Google strengthens the appeal of its wearable ecosystem while potentially nudging users toward newer devices. This approach mirrors tactics used by other tech giants, such as Apple’s tight integration between the Apple Watch and iPhone.

However, the lack of support for older Fitbits risks fragmenting the user base. Longtime Fitbit customers may feel alienated if they cannot utilize the Air’s features without abandoning their current devices. Google’s promise of future updates offers some reassurance, but the absence of a concrete timeline leaves uncertainty for users evaluating long-term investment in the platform.