Fitness tracker · From $99.95, Premium optional
Fitbit
Friendly, affordable everyday activity and sleep.
US list prices checked September 15, 2026 on the official store.
Choose your Fitbit model
Best all-round tracker: built-in GPS, ECG, cEDA stress
Best for
Steps, sleep stages, stress (cEDA) and simple goals
Watch out for
The Gemini coach needs Google Health Premium; lighter training context than Garmin
With Vora
Vora uses Fitbit as a low-friction activity and sleep source, then layers on AI coaching.
Where Fitbit data syncs
What reaches Apple Health on iPhone, Health Connect on Android, and Vora through a direct connection (listed as Fitbit, Fitbit Air and Pixel Watch).
| Metric | Apple Health (iPhone) | Health Connect (Android) | Vora direct connection |
|---|---|---|---|
| HRV | No | Maker lists it | Yes |
| Sleep stages | Maker lists it | Yes | Yes |
| Resting heart rate | Maker lists it | Yes | Yes |
| Blood oxygen | Maker lists it | Maker lists it | Yes |
| Readiness score | No | No | No |
How we rated the Fitbit
Our own assessment of a device we do not sell, weighted across six dimensions: accuracy 30 percent, coverage 20 percent, battery 15 percent, value 15 percent, comfort 10 percent, app and ecosystem 10 percent. Every score links to its source: independent testing, or the brand's own page for current-model specs and prices.
Fitbit optical heart rate tracks close to a chest strap for steady efforts and its sleep staging is respectable, but fit sensitive HR lag during intervals and roughly 30 percent deep sleep error keep it above average rather than clinical grade.
Across 107 hours versus a multichannel OpenBCI EEG reference, the Fitbit Charge 6 scored 74.7 percent overall sleep stage accuracy (F1 0.72), 70.5 percent for deep sleep and 77.8 percent for REM. Quantified Self Experiments (Charge 6 vs EEG lab) ↗
For a band it delivers a broad metric set (steps, 24/7 HR, sleep stages, cEDA stress, ECG, SpO2 and built-in GPS on Charge 6), though the richest sleep and readiness insights sit behind Premium.
OutdoorGearLab tested built-in GPS (0.86 miles on a steep-hill route, better on open trails), heart rate at +/-3 BPM vs a Polar H10, and sleep tracking that 'matched what we observed', scoring Extra Features 7.0/10. OutdoorGearLab ↗
Reviewer-tested endurance lands just short of the 7-day claim with the display managed, but heavy GPS use drains it fast and testers rated battery among the device's weaker traits.
OutdoorGearLab measured roughly 8 hours of continuous GPS and just under seven days in smartwatch mode, rating Battery Life 4.0/10. OutdoorGearLab ↗
The slim, light band is easy to wear day and night, which is exactly what a sleep-and-activity tracker needs.
OutdoorGearLab rated Wearability 7.0/10, calling the Charge 6 the 'slimmest in our lineup', 'slim and light' and 'barely noticeable when you are wearing the device'. OutdoorGearLab ↗
The app is polished and data can flow into Google Health Connect for a coaching app, but a Google account is now mandatory and the Health Connect feed for sleep and exercise is limited and unreliable.
9to5Google reports Google is making the Fitbit-to-Google-account migration mandatory (deadline Feb 2, 2026) to keep using the service, and Fitbit community threads document sleep and exercise data failing to sync through Health Connect. 9to5Google ↗
Cheap, capable hardware that frequently sells below list, but Daily Readiness, sleep phases and wellness reports are locked behind a paid subscription after the trial.
Reviewed lists the Charge 6 at $85.45 street price but notes Daily Readiness, wellness reports and detailed sleep phases require Fitbit Premium at $10/month or $80/year, with six months included. Reviewed.com ↗
Also reviewed by: OutdoorGearLab, Reviewed.com
Build a stack around the Fitbit
It is pre-loaded below. Drag in a second device to see how the combined coverage changes.
Build your stack. Vora runs it.
Drag wearables from the ring into the arena, or tap to add. Combine up to 8, each signal takes the strongest sensor you own, and Vora reconciles them into one plan.
OuraRing
AppleWatch
WHOOPBand
CIRQABand
FitbitBand
GarminWatch
SamsungWatchFitbitBand
UltrahumanRing
DexcomCGM
GoogleWatch
COROSWatch
Eight SleepSleep
PolarHR strap
SamsungRing
RingConnRing
CircularRing
AmazfitRing
WithingsWatch
SuuntoWatch
PolarWatch
AmazfitWatch
GarminHR strap
AbbottCGM
LevelsCGM
WithingsSleep
WithingsScale
InBodyScale
HumeScale
GarminScale
Excellent, well-rounded coverage across sleep, recovery and training.
- A single device is simplest to live with. Vora squeezes the most out of whatever it captures.
FAQ
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Keep exploring
Oura RingUltrahuman RingSamsung Galaxy RingRingConnCircular Ring 2Amazfit Helio RingApple WatchGalaxy WatchGoogle Pixel WatchWithings ScanWatchGarminCOROSSuuntoPolarAmazfitWHOOPFitbit AirGarmin CIRQAPolar H10Garmin HRMDexcom (Stelo / G7)Abbott Lingo / LibreLevelsEight SleepWithings SleepWithings Body ScanInBodyHume Body PodGarmin Index S2Keep your wearable. Add a coach that acts on the data.
Vora works with Oura, WHOOP, Garmin, Apple Health, Fitbit, Samsung Health, Eight Sleep, CGMs and hundreds more, turning whatever you wear into workouts, nutrition, recovery and a daily plan.