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Someone choosing a sleep app asks whether the price is visible before downloading, whether the service can be tried for free, whether a separate device is needed, whether the subscription is easy to cancel and whether the app works on their own phone. These decide 50 points out of a hundred.
Score shows how the company does on our comparison criteria, on a 0–100 scale. Rankings cannot be bought.
Basic metrics · 72.9
+ The only one in the comparison that clearly presents the subscription price on its site: Oura membership 5.99 $/month, first month free for new users
Basic metrics: 72.9, rank 1 · no change
Basic metrics · 65.3
+ The measurement method is clearly described: the app records breathing sounds and movement and builds a sleep estimate from them without a separate device
Basic metrics: 65.3, rank 2 · no change
– A phone is enough: It is not stated on the front page or in the terms of use whether a separate device is needed.
Basic metrics · 55.7
+ The measurement method and metrics are described clearly: Apple Watch heart rate, HRV, blood oxygen saturation and sleep rhythm, plus trend reports
Basic metrics: 55.7, rank 6 · ▲ 3 places
Basic metrics · 60.8
+ The measurement method (modelling of sleep debt and the energy schedule) is explained exceptionally thoroughly both on the front page and in the help centre's Understanding Your Data section
Basic metrics: 60.8, rank 4 · no change
Basic metrics · 62.2
+ An exceptionally detailed privacy notice in which every data permission (advertising, analytics, backup, SleepCloud, Google Fit, location) is itemised separately with granular switches
Basic metrics: 62.2, rank 3 · ▼ 2 places
– Price shown before download: The price was not found on the front page or the guides' front page, and the trial page redirects to a new documentation site that could not be read.
Basic metrics · 59.4
+ The measurement method is clearly described: Apple Watch and iPhone sensors, audio recordings and heart rate analysis together
Basic metrics: 59.4, rank 5 · ▼ 1 place
– Free trial: Not mentioned on the front page, and no price, order or trial page was found in the site's sitemap.
Weights are fixed. All companies are measured on the same scale. Read the full methodology.
| Buying motive | What is measured | Scale | Weight |
|---|---|---|---|
| Price shown before download QUESTIONIs the order price stated on the company's own page? | Is the monthly price readable on the company's own website. | Price on the page = 100 points, price not stated on the page = 0. | 20 p |
| Free trial QUESTIONCan I try before I pay? | Length of the free trial in days. | 30 days or more = 100 points, 0 days = 0, in between directly proportional. | 12 p |
| A phone is enough QUESTIONDo I need a separate device, or is the phone or watch I already have enough? | Does the app require a separate device to be purchased. | Phone or existing watch is enough = 100 points, separate device required = 0. | 8 p |
| Order cancellation QUESTIONCan I get out of the subscription at any time? | Whether the company states that the order can be cancelled at any time. | Can be cancelled at any time, benefits valid until the end of the paid period = 100 points, only cancellation instructions without a promise on timing = 50. | 6 p |
| Platforms QUESTIONDoes the app work on both iPhone and Android? | Which mobile platforms the app is said to be offered for. | iOS and Android = 100 points, only one platform = 40. | 4 p |
| Basic metrics | Digital quality, transparency, reachability and AI quality score | Basic metrics × 0.5 | 50 p |
We scored 6 sleep tracking apps on 20 metrics. The key question for the user: is it openly explained how the app measures your sleep, is the subscription price visible without going to the app store, and above all what your health-related sleep data is used for and whether it is shared?
Sleep tracking apps promise to tell how well you sleep, but they also collect sensitive health data about your sleep. We compared six sleep apps used in Finland from a transparency perspective: how the app states its measurement method, whether the subscription price is visible without going to the app store, and above all what you are told happens to your sleep data. We do not measure which app measures sleep most accurately, but how openly it states its terms before you hand over your data.
Subscription price (monthly or annual price) publicly on the site without the app store (22), sleep measurement method (microphone, accelerometer, ring, watch sensors) stated (20), whether it is stated what sleep data is used for and whether it is shared or sold (20), data location or privacy policy (GDPR/EU) clearly stated (12), free version or trial period and its limits stated (10), supported platforms (iOS, Android, watch) stated (8), owning company stated on the site (8)
Transparency is 30% of the basic metrics, i.e. 15% of the total points · these metrics make up its 100 points · the full formula and the other pillars
How to read the comparison correctly: Half of the points come from buyer's questions, i.e. things the buyer finds out before deciding. The other half measures how openly the company publishes its prices, terms and contact details. Clear differences in points indicate a genuine difference: one tells you the price immediately, another only after logging in. Close scores should not be read as a ranking order, because every measurement has a margin of variation. The measurement accuracy and the full calculation formula are open in the methodology.
Customer experience is brought into the assessment separately. We also collect customer feedback and customer experiences about companies through separate surveys. The survey results will be added to the overall assessment later.
Who is on the list? Included are apps specialised in sleep tracking and sleep quality measurement that have their own live website and are available in Finland. Some measure sleep with the phone's microphone or sensors, some with Apple Watch sensors and one with a smart ring. Meditation or sleep-story apps and general device manufacturers for whom sleep is only one feature among others are not included. One of the six, Oura, is Finnish; the others are global services.
What do we measure? The comparison concerns the transparency of the service to the user: whether it is stated how the app measures sleep, whether the subscription price is visible on the site without the app store, whether it is stated what sleep data is used for and whether it is shared or sold, whether the data location or privacy policy is stated, whether a free version or trial with its limits is shown, whether supported platforms are stated and whether the owning company is visible. We do not measure which app measures sleep most accurately, but how openly it states its terms before you hand your health data over to it. Sleep data is sensitive health data, so data use and location weigh most in the comparison.
Bot or server blocking is a measurement gap. If a service's pages were behind a bot or cookie wall or the page did not respond at the time of measurement, it is marked as a measurement gap, not a zero. Walls are not bypassed. Some prices are only visible in the app store, which lowers price transparency on the site.
Every company is measured with the same public formula: half of the points come from buyer's questions and half from basic metrics, which have four pillars: technical quality, transparency, reachability and AI quality score. Ranking cannot be bought, and you can see the origin of each point on the company's profile. Read the full methodology →
In this comparison Oura received the highest transparency score. It is the only one that clearly presents the subscription price (5.99 dollars a month) on its site, its site is in Finnish and the owner is domestic and named (Oura Health Oy). On openness about data use and price, Sleep as Android and Sleep Cycle also did well.
Many sleep apps are sold as an in-app subscription in the app store, so the price is shown only in the App Store or Google Play. This lowers price transparency on the website: the user does not see the monthly or annual price until they download the app and proceed to the subscription.
The method depends on the app. Microphone-based apps (Sleep Cycle) listen to breathing and movement. Apple Watch apps (Pillow, SleepWatch) use the watch's heart rate monitor, heart rate variability and blood oxygen saturation. Rise models sleep debt from behavioural data, and Oura measures with the smart ring's sensors. A wearable device generally gives a more accurate picture than a phone alone.
It depends on the service. Some store health data only on the device by default (Sleep Cycle) or itemise every data permission separately (Sleep as Android). Always check the privacy notice for whether data is used for advertising, shared with third parties and where it is stored. Many services do not state the exact geographic location of the data clearly.
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