Frequently Asked Questions

Why doesn't the app record a full night?

In short: set correct battery optimization settings.
This is most likely because of battery optimization settings on your device. Nowadays most manufacturers will apply battery optimization to prolong battery life to a maximum by putting long running apps in sleep mode. When the Torena app is being put into sleep mode, it cannot track your sleep positions anymore. So look up how you can modify the battery optimization settings for your phone and make sure the Torena app is excluded from being put to sleep automatically.

How accurate is the app Torena?

In short: very.
The app has been tested during a polysomnography (sleep study) at the UZA hospital in Antwerp. It turned out that the sleep positions detected by the Torena app were a nearly exact match with the positions detected by the systems at the hospital. The only difference was when lying in between positions (eg between back position and side position), which the hospital was also not able to detect accurately (basically because the system has to decide whether it's the back position or a side position, and there's no position in between).

How effective is the alarm feature?

In short: very.
During personal testing the app showed sleeping on back position for several hours throughout the night without the alarm. When enabling the alarm this was limited to somewhere between 5-20 mins for the entire night, depending on how the alarm was configured (short or long delay).

What's the impact on battery life when using Torena?

In short: little.
If you use airplane mode, disabling connections, and close other apps when running Torena, you will have little battery drain throughout your sleeping session.
We've tested with a Samsung S9, running with airplane mode on, and no other apps running in the background. When starting the session with 100% battery life, we had 92% left when closing the session 7 hours later. Much depends in what condition your battery still is.

Will there be a version for iOS soon?

In short: no.
For the simple reason Apple is not quite open to develop iOS apps on systems other than Mac, which I don't own. There are ways around it, but they're cumbersome. I might give it a shot in the future, but don't expect an iOS version any time soon.

I'm starting to get used to the alarm. It doesn't have as much effect as in the beginning.

This is your body responding to the alarms during the night. Just like someone gets used to sleeping next to a train railway, or traffic, your body also adapts to the alarm and tries to sleep through it in order to ensure your night's rest. Of course in this case, you don't want that, because you want to avoid a specific sleeping position. I've learnt that it helps to change the vibration pattern and/or sound options over time, so your body will respond to the alarm again (basically waking you up).

I'm missing a feature, can I request it?

Sure, you can try. Depending on the work needed, and the added value for other users I might include it in a next version. I'm open for feedback and eager to hear from users what they like or dislike in the app so I can aim for better in future versions.

My screen is too small to get a good look on the graphs, how can I see them bigger?

You have two options:
1/ You can zoom in and out on the graphs, just like you would do on a picture (two fingers, slide open or slide in).
2/ You can export your session data in the app, then copy/email them to e.g. a laptop or other device with a bigger screen. Then you can click on "Summarize" in the menu above, and upload your file to get more in-depth graphs on your sleeping sessions.