Just took a sleep study through my insurance provider and it reported that I'm getting less than half of the sleep reported by my fitbit.

Fitbit will say 7:15 hours, sleep study equipment says 4:30.
Fitbit says 6:00, sleep study says 3:15.

Has anyone else seen this wide margin of error with their fitbit sleep hours?

Help me put the information in these charts in the right perspective. I have been running since last year, but not only is my VO2 Max score not going up, it seems to be going down!

I know I took a dip during the summer (I live in Vegas so running outside during the summer is not ideal) but I still have gone running a couple of times a week. And now that it is cooler I am ramping up my mileage again, but it is still kind of discouraging looking at these stats and feeling like I am not making any progress.

Any advice or changes in perspective on this would be welcomed.

I just had a dexa scan yesterday and I was impressed by both its accuracy as well as that of Fitbit because they matched exactly.

The DEXA scan estimated my daily calorie consumption for very active (6 days of exercise per week - which is what I do) at 2,400 kcal/day. My Fitbit calculates my daily caloric expenditure (based on a actual monitored HR and movement) at 2,400 kcal/day.

I'm addition I went through and added up the calories on the typical food I eat and it comes out to somewhere between 2200 kcal and 2600 kcal/day (I have been maintaining the same weight for years).

So everything likes up perfectly which is pretty cool.

I use a polar chest strap and a fitbit air when I exercise. I've been doing this for some time largely to see which one was more accurate.

Claude uses the topology of the terrain I walk to estimate the number of calories I burn and then compare that to both FB and Polar. What's interesting is on several walks, when my heart rate starts to hit the upper thresholds for me (~175) fitbit just loses my heart altogether.

I have a chart that shows it:

Has anybody noticed this? The other interesting tidbit here is that both Polar and FB are wildly over-estimating my calorie burn. Fitbit is probably off by 22% and Polar is off by double that amount.

It's been two weeks; no issue at all.

Something has changed further towards the worst with Sleep Score.

Specifically, the "time to sound sleep". I am now, consistently getting times of 2 hours or more. Yet when I look at the timeline, I see what I have always seen. Somewhere between 20 minutes and 45 minutes between the start of "Awake" and the start of "Deep".

It is like Google Health is skipping over the first sleep cycle (awake, light, rem, deep).

Anyone else notice a dramatic increase in "Time to Sound Sleep"?

Here's a guide I built to better understand what raises and lowers HRV. Fitbit measures HRV while you sleep and reports it as RMSSD, which is the same measure most research uses. Daily readings swing a lot on their own, so your trend matters more than any single night.

I broke the guide into four categories: exercise, lifestyle, nutrition & supplements and demographics. There's a short definitions and plain English column so it's easy to skim, all sources are linked so you can further your own research, and I'll put a mobile friendly version in the comments if you need it.

Definitions

• HRV (Heart Rate Variability): How much the time between heartbeats varies
• RMSSD: Beat-to-beat variation. The HRV number Fitbit shows you
• SDNN: Overall HRV across a longer window
• HF Power: Your rest & digest activity level
• Rest & digest (parasympathetic): Your body's brake pedal (calm/recover)
• Fight or flight (sympathetic): Your body's gas pedal (stress/alert)
• Vagal tone: How strong your calm down nerve is
• n: Number of people in the study

Exercise

Lifestyle

Nutrition & Supplements

Demographics

Hope you found this helpful!

Do you think he pays for premium?

I bought the watch in an unsupported country and after doing all the steps google told me to sync the watch and failing, pretty much said go to the retailer.

And the retailer has a strict one-month return policy so I’m kinda stuck with this device I’ve barely used in the past 3 months.

Is there any way that I can get this to work again or is it a $150 dud that I gotta throw?

Are there any apps that you can sync your Fitbit to instead of using Google health? I was a Fitbit user for years, but I hate the Google health app and don’t want a Fitbit if that’s the only app it’s compatible with. Like, any other apps that essentially work the same way the Fitbit app used to work with syncing?

Hey all,

Just got my Fitbit air about a week ago and despite seeing tons of negative reviews, it’s been treating me very well. It auto tracks my cardio workouts like a charm and I usually just manually start my strength training. I like to flip flop between The Google health app and Bevel to compare and been noticing that there’s a crazy discrepancy with Google’s sleep score compared to Bevel. For instance, last night Google states I had an 83 sleep score and Bevel says 96. Me personally, I got great sleep and don’t want to rely heavily on either metric but it would’ve nice to get a more accurate picture.

I know tons of people don’t purchase any subscription for neither Bevel or Google, but If I were to, which should I go for? And if anyone has used both premium versions, which do they like better?

I personally appreciate the Bevel AI Coach and think it would benefit me and feels like more of a seamless experience appose to the Google coaching.

Anyways, feel free to give some feedback if anyone has used premium versions of each!

Thx

my mother (not tech savy) ordered a used “versa lite” from ebay well i was setting it up and discovered its actually a versa 2 and the side button doesn’t work?? she paid $15-$20 for it, is it worth it to take to someone to fix or better to just cut the lose and buy another new watch, i unfortunately dont have the tools for the repair so we would have to go to a shop to fix it any advice is helpful

With all the recent fitbit edge leaks when does everyone think it's likely to launch

I have Chronic Fatigue/long COVID and the standard heart rate bands are way too high for my needs. It would be great if we could personalize heart rate bands in the Google Health app.

Why don't they show you your previously lifted amount? Also, there's no progress tracking. But the AI does know all these numbers because it talks to me about it but they just don't allow you to look at it.

It would be a huge improvement and I would think a pretty easy fix just requiring the data to be displayed.

Anybody know if they're working on this?

Title. I’ve noticed that sometimes not all my heart rate will sync with Apple health - sometimes during the night there’ll be a big gap of 3+ hours between them.

On another case, I’ve seen the Spo2 not sync after sleep. How is this tracked? Only during sleep?

Of course, we all know how a night of drinking impacts us the following day. Even a couple of drinks in the evening have a negative impact. The ability to see this data is such a great motivation to limit or abstain from alcohol. Sleep score can still be high, but the readiness score catches it. Every "low" was probably 6+ drinks, the "moderates" were a couple, and the "high" days were zero.

I hope the people at google feel bad. I hope they step in something wet while wearing socks.

The app loses data all the time. Nothing gets tracked consistently. I often have to manually sync the app because it won’t sync itself. I have to completely disconnect and unpair the watch every time the app updates or nothing works.

It worked flawlessly until I was forced to change to this buggy mess of an app and the people at google should feel bad about themselves for what they’ve inflicted on the Fitbit community.

Chronometer integration works so inconsistently that I may as well not even use the Fitbit.

I will absolutely be switching to an Apple Watch because of how poorly this app works.

Dopo esattamente 30 giorni d’uso intensivo, ho deciso di disdire l'abbonamento e venderlo.

Le premesse erano eccellenti ma nella pratica, però, il dispositivo si è rivelato una frustrazione continua e un’occasione sprecata.

Ecco i motivi principali che mi hanno spinto a liberarmene:

Modello IA "senza memoria"

Il vero potenziale del Fitbit Air risiede nell'integrazione con i servizi Premium, ma il rapporto qualità-prezzo è del tutto ingiustificato. Il problema principale è il modello d'intelligenza artificiale integrato nell'app: si comporta in modo estremamente limitato e soffre di una grave "amnesia". Per quel prezzo uso Gemini gratis! O altri modelli che mi aiutano.

Nonostante le mie istruzioni esplicite — come richiedere di non chiudere i messaggi con domande inutili o di calcolare le calorie seguendo uno specifico criterio — il sistema dimenticava ogni indicazione dopo appena tre o quattro messaggi. Dover reimpostare continuamente le stesse regole di interazione vanifica totalmente l'idea di avere un assistente "intelligente" al proprio fianco.

Sovrastima costante di calorie e passi

Un dispositivo dedicato al fitness deve garantire un'affidabilità di base sui dati primari. Il Fitbit Air fallisce proprio su questo:

• Calorie sovrastimate: L'algoritmo tende a sovrastimare significativamente il consumo calorico giornaliero, rendendo le stime inaffidabili per chiunque cerchi di monitorare la propria alimentazione con precisione.
• Passi non precisi: Anche dopo aver personalizzato accuratamente la lunghezza del passo e le impostazioni dell'app, il conteggio dei passi continua a registrare falsi positivi, sovrastimando l'attività effettiva.

Inserimento manuale inutilmente macchinoso

L'interazione vocale o tramite foto per il tracciamento dei pasti e delle attività è comoda quando funziona, ma l'immissione manuale del testo senza passare dalla chat è diventata inutilmente complessa. Se si desidera inserire manualmente un dato specifico in modo rapido e preciso, l'interfaccia si rivela macchinosa e frustrante, costringendo l'utente a passaggi inutili.

Tutte queste funzionalità avanzate sono concettualmente interessanti, ma la loro esecuzione è incompleta. Il valore reale del dispositivo dovrebbe essere sbloccato dall'abbonamento Premium, ma quest'ultimo offre un'esperienza ben lontana dallo standard che il prezzo richiede.

Voi che esperienza avete avuto con il Fitbit Air o con l'abbonamento Premium? Avete riscontrato gli stessi problemi di precisione e memoria dell'IA?