Reviews for sleep² sleeptracker & analysis

Great app. The algorithm seems reliable, however sometimes the data from some nights is lost irremediably for unknown reason…

This a very useful and well put together app, early experiences are very good with some lack of context clarity here and there in the guidance on what the results mean and setting up sensor. Will update this review after more time using the app.

decent price. very accurate. good format and comfortable to use

The app lacks a sleep data export feature, which is essential for long-term tracking. Please consider adding this functionality. I’ll happily update my rating to 5 stars once it’s available.

I tried sleep2 because of the recommendation, but can’t really say anything about it because all the good things are hidden behind a 25eur/month paywall. It’s a lie that there is a free trial/version, because you pay for it with your data and get for that some very basic data and numbers without any individual […]

Using it with Polar Verity sensor. Just purchased the yearly pro subscription because according to tests it is one of the most accurate sleep tracking available. App still needs some work though. Sometimes it is a little buggy and I would appreciate more detailed insights/recommendations.

Now that the English version is finally out, I decided to subscribe. I really like the accurate results that I get with this using the Polar H10! It is actually very comfortable, and is a really cheap device which I can also use for activity tracking. It would be awesome if you could give us […]

basic version is nearly useless with an h10 strap. paid version is too expensive.

Health Connect integration within the app is poorly utilised. Lacks integration with other fitness applications. Features for non-subscribers are minimal. Subscription plan pricing isn’t realistic. Has trouble opening after being closed on Android 15. Whilst sleep tracking, you don’t get any notifications regarding sensor connectivity.

Extremely usefull. Finally after trying many other much more expensive options,I found the perfect sleep tracker .It is the closest product on the market to the gold standard of sleep testing/sleep clinic/hospital test. Sleep2 combined w/ Polar Verity Sense has been proven (by the Quantum Scientist ) against very expensive eeg machines and nearly every […]

Great interface and presentation of the (seemingly quite accurate) data. Integration with Polar Verity Sense works flawlessly and unobtrusive to wear the entire night. Haven’t tried it with the H10 as I find the chest belt uncomfortable to wear over longer periods. Only issue I see is with naps and biphasic sleep not being considered […]

I’d really appreciate an API connection for fetching data, or at least a simple export option to CSV. Other than that, I really like the app.

Pretty good already, looking forward to updates that provide insights on correlation of lifestyle factors and sleep for the 5th star Edit: very happy to see that you can now add and track custom factors. Now the only thing missing is the correlation analysis feature. Hope it will be released soon cause this is what […]

All you get with the free version is: Sleep duration, efficiency, and continuity. Due to relatively recent changes, it seems the free version no longer offers proper insights like it used to. Previously, sleep stages were included for free. Based on what I’ve read, the “guidance” the pro version offers is free online videos, and […]

well organized app. reviewed as having very accurate sleep data. simple process. however, app is a little busy on first use. support is very good if you are on a subscription. I use it with a Polar Verity Sense

Only use it as I do not have an Apple Watch and I trust the Quantified Scientist review of sleep stage accuracy. I am a paying user. Very little value. Asks for input on behaviors but no insights on the impact of those behavior inputs so that is a waste of time – zero. 2nd […]

Tracking seems to be quite accurate, but how would one know? The ml model seems to miss some of my awakenings. In any case, after three months using it daily, I am not gaining any new information. In retrospective I learned, the more time for sleep is available the better. Surprise. It might have been […]

Most of the UI is intuitive and easy to handle. There are quite a few bugs, though, of which the two most annoying are that the app insists on falsely stating that the sleep tracker does not have enough battery power left and that the app loses the connection to the sleep tracker or is […]

Can’t see if it works until you subscribe. $23 /month/ costs a fitbit every 4 months. Does it work? Can’t tell without subscribing. If it worked great, had a trial, and didn’t cost more than oaura, sleep8, etc subscriptions ($10/ month would be high), would be 5*. Shows quality at 100%, which is impossible with […]

The biggest problem for me is that 90% of the nights it shows my awake time as 0, which is impossible. I am using verity sense and I dont know how it gets it so wrong. Also, I dont like big blurred cards reminding that you have to buy a subscription, you can make it […]