Fitbit Air Top Tips and Tricks // Get Better Data!

Fitbit Air: Key Tips, Features, and Limitations

The reviewer focuses on getting more accurate health and workout data from the Fitbit Air, including how to wear it and how its app interprets activity.

Bands and fit

• For sports, wear the band snugly enough to prevent movement and keep light from getting under the sensor. The reviewer recommends wearing it slightly higher on the wrist.
• The Performance and Steph Curry fabric bands are preferred for exercise because they stretch and hold the sensor securely. The Steph Curry band has an inner silicone grip and is said to have a more water-resistant coating.
• Fabric bands can stay damp for around 10–15 minutes after a shower or workout.
• The Active silicone band dries quickly but stretches less; the reviewer prefers the feel of fabric.
• The Elevated band looks stylish but has very little stretch, which can make it harder to achieve a snug fit and accurate heart-rate readings.
• The wrist is not an ideal place for optical heart-rate sensing, especially when gripping something. There is currently no armband option, which the reviewer hopes will change.

App, metrics, and setup

• The Google Health app home screen displays key stats and a two-day timeline with workouts, sleep, and—if subscribed—AI insights. New Air owners reportedly get a three-month premium trial.
• Users can customize the displayed stats, but rearranging them is awkward: they must remove and re-add metrics. The app is new, and improvements are expected.
• Cardio load reflects cardiovascular effort across daily activity and workouts. After a few weeks, the app establishes a baseline and suggests a personalized target, which adapts as it collects more data.
• Readiness is a morning-only score based on sleep, resting heart rate, and heart-rate variability. It may take about a week to appear and roughly a month to fully calibrate. It does not change after a workout during the day.
• Steps rely on wrist movement, so walking while pushing a stroller or holding treadmill rails may be undercounted. The reviewer found that driving caused only a handful of extra steps over 15–20 minutes, an improvement over some earlier Fitbits.
• Manually recorded workouts such as cycling, rowing, and weight training exclude movements the device might otherwise miscount as steps. Automatically detected sessions may include some extra steps—for example, the reviewer saw this with rowing but not cycling.

Sleep tracking

• Short awakenings of only a few minutes may appear as restlessness rather than awake time. Periods longer than about five minutes are more likely to appear in the awake timeline or sleep-stage breakdown.
• In the reviewer’s testing, 8 Sleep and Garmin showed more awake time than Fitbit Air, while Oura showed somewhat less.
• A sleep-score bug sometimes delayed scores until the next day. Logging out and back in could recalculate them; a fix was expected in a future update.

Workouts and activity detection

• Starting a workout manually in the app provides the most detail. Indoor sessions show metrics such as time, heart rate, and cardio load. Outdoor sessions can use the phone’s GPS for speed and distance because the Air has no built-in GPS.
• Live workout feedback differs by platform: Android shows heart rate and a timer, while iOS provides only a basic notification. The reviewer wants a fuller live-activity screen.
• Sessions can be edited later if the user forgets to stop recording.
• Automatic detection worked well for the reviewer’s running, cycling, rowing, HIIT, and walking, but did not detect their weight training. Detection time varied:
  • Running: about 10 minutes
  • Cycling: 26–37 minutes
  • HIIT: around 20 minutes

The reviewer suggests allowing 20–30 minutes for a notification.

• Missed activities can be logged manually or through chat. The chat feature makes it easy to add strength-training sets, reps, and workout types.
• An in-progress workout prompt is planned for a future update. Even if an activity is not identified as a workout, heart-rate data still contributes to calories burned and cardio load. Users can log the session afterward to add workout-specific details.
• Automatically detected workouts do not include location data. For automatic walking and running, distance is estimated from steps and the stride length set in the app. The reviewer found the default stride estimate too long and entered a personal value instead.

Other feature

The AI coach can log food by text or photo. The reviewer found its photo-based food identification surprisingly effective.

Verdict

The Fitbit Air offers useful all-day tracking, cardio-load guidance, and convenient automatic workout detection, but accurate sports heart rate depends on a secure fit. Its workout experience is less complete without built-in GPS, and the app still has usability differences between iOS and Android, as well as some bugs.

It is best suited to users comfortable with app-based GPS and occasional manual corrections. A snug band fit and regular checks of activity logs can help improve the data.

Speaker perspectives

One reviewer provides all the observations and comparisons, based on their own testing. No numerical product rating or score is given.