No device to buy
Your phone is the sensor you already carry, and Kata reads your WHOOP, your Apple Watch through Apple Health, or Health Connect on Android.
Honest comparison
Kata vs Fitbit.
Fitbit became Google Health in May 2026, and the Gemini coach that came with it is the real thing. The question is whose servers your health lives on.
The verdictNow Google Health, with a real Gemini coach. The question is whose servers it runs on.
First, fairly
Fitbit at a glance.
What it is for
Since May 2026 the Google Health app, with a Gemini coach that plans training, reads sleep and heart rate variability, and tracks your cycle.
What it costs
Google Health Premium: 9.99 USD a month or 99 USD a year, included with Google AI Pro or Ultra. The Coach needs a compatible device: Fitbit Air starts at 99 USD with three months of Premium. Some tracking stays free, though the split moved with the rebrand.
Where it is strongest
Adaptive multi week plans that reshape around a bad night, at a price nothing in the category matches.
Who it suits
People already inside Google who want continuous tracking and a fluent coach cheaply.
The difference
What changes with Kata.
More of the picture
Food, supplements, lab values, weight, medication and mood in one system: by voice in every plan, by photo with Kata Plus.
Your file stays yours
Logs, chats and Kata's memory live on your device, not in a Google account.
Side by side
Row by row.
A gray mark means possible, but not on its own.
| Capability | Kata | Fitbit |
|---|---|---|
| Continuous tracking from a band | Partlyfrom WHOOP, Apple Health (iPhone) or Health Connect (Android) | Yeswith a Fitbit device |
| Works without buying hardware | Yesyour phone is enough | Nothe Coach needs a device |
| Logging food by saying it | Yeswords or voice, photos with Kata Plus | Partlysearch, log, quick entry |
| Supplements you can chart | Yesa stack, with adherence | No |
| Lab values read from a photo | Yeswith Kata Plus | Partlymedical records where supported |
| Your health data lives on your device | Yesno logs or chats we can read | Noa Google account, in the cloud |
| Mind, mood and cycle in one system | Yes | Partlycycle and stress tools |
Why Kata
Three reasons, not thirty.
One system
Food, training, sleep, supplements, labs and mood in a single place.
It decides
Not a dashboard you read: a coach that says what today should look like.
It stays yours
Your logs, chats, photos and Kata's memory live on your device.
Honestly
When Fitbit is the better choice.
If you already live inside Google and want continuous tracking cheaply, this is a strong package. Ninety nine dollars for a screenless band, a capable Gemini coach for ten a month, free if you already pay for Google AI Pro.
In short
What, how and why.
- What
- Kata is the same idea as the Google Health Coach, built the other way round.
- How
- It runs on your phone, reads WHOOP, Apple Health or Health Connect, and adds food, labs, supplements and mood.
- Why
- Whether the coaching is good is settled. Where the record of you lives is not.
One coach. Your whole picture.
Start free: the core stays free for good, and from 16 November every account begins with 30 days of Kata Plus. Set up in one conversation, in your own words.
Questions
Asked and answered.
Is Fitbit gone?
The hardware is not: trackers and watches are still sold, including the screenless Fitbit Air. The app changed. Since May 2026 it is the Google Health app, and Fitbit Premium is Google Health Premium at 9.99 USD a month or 99 a year.
Google's coach is cheaper. Why choose Kata?
Two reasons, and price is not one. Kata holds more of your health in one place: food by voice, supplements, lab values, medication and mood. And all of it lives on your device, not in a cloud account.
Checked 2026-07Competitor details change. We check these pages regularly and correct them when something moves: if you spot something out of date, tell us and we will fix it.
Fitbit is a trademark of its owner. Kata is independent and is not affiliated with, endorsed by or sponsored by Fitbit.
Kata is a coach, not a doctor. It supports everyday decisions about food, training, sleep and rhythm; it does not diagnose, treat or replace medical advice.