The short version
If you want a focused health and activity tracker that lasts for days, works with any phone, and usually costs less, Fitbit is the easier device to live with: steps, heart rate, sleep stages, and readiness, done simply. If you want built-in GPS on most models at a similar price with no required subscription, Amazfit is the stronger budget pick for tracking actual workouts.
Neither choice is wrong, and most of the differences come down to whether you want GPS built in and how much you want to spend. The part that actually changes your results, what happens to the data after it is collected, is the same either way once you pair it with a coach that can read it.
How they stack up
A high-level look at the differences that tend to decide the purchase. Both are solid devices; this is about fit, not a knock on either.
| Feature | Fitbit | Amazfit |
|---|---|---|
| Works with iPhone | Yes | Yes |
| Works with Android | Yes | Yes |
| Battery life | Several days to a week | Several days to a few weeks, varies by model |
| Built-in GPS | Basics on some models | On most models |
| Strong all-day and sleep tracking | Yes | Yes |
| Typical build | Lighter, casual | Sport-focused on most models |
| Subscription for advanced insights | Some behind Fitbit Premium | None required |
| Typical price | Lower to mid | Lower to mid |
| Syncs into Wellness Project | Yes | Via Apple Health / Health Connect (through the Zepp app) |
The pattern is consistent: Fitbit wins on simplicity and a direct connection, Amazfit wins on built-in GPS at a comparable price. Both land their data in Wellness Project, so the last row is the one that makes the rest lower-stakes.
Who each one is best for
Choose Fitbit if you want all-day and overnight tracking without thinking about the battery, you like a lighter, friendlier band, and Wellness Project connects to it directly. It is the better pick for steady, low-friction tracking rather than GPS workouts, and it works on either iPhone or Android.
Choose Amazfit if you want built-in GPS on most models, a lower price, and no recurring fee, and you do not mind that your data reaches Wellness Project through a relay rather than a direct connection. It is the better pick for people who want to capture GPS workouts without paying sport-watch prices.
The honest take: the device is not the decision
This one really does come down to whether you want GPS built in. If your days are steps, sleep, and a few workouts you want noted, Fitbit covers that simply, with a direct connection to Wellness Project. If you want to capture actual GPS workouts without paying sport-watch prices, Amazfit earns its keep. Pick by your actual training, not by the longer feature list, because a sensor you never use is not a benefit.
But choosing the right watch is only half of it. Whichever you land on, its numbers stay locked in their own app until something connects them to the rest of your week. That is what Wellness Project does: it pulls the training in alongside your sleep and nutrition so the data turns into a next step instead of a graph you scroll past. The smarter move is not winning the Fitbit-versus-Amazfit debate; it is making the tracker you own actually useful.
Fitbit or Amazfit, bring the training into one coach.
Link Fitbit directly, or bring Amazfit in through the Zepp app's relay to Apple Health or Health Connect, and get coaching that reads your data in context. Free during early access. iPhone, Android, and web.
