Ruuvitag memory?

hi, does ruuvitag store measurements into a local memory that can be read later (when I come home from work, or whatever) with the mobile phone app?
or is it the case that if nobody is listening to the BLE then the data is just lost??

seems kind of an important FAQ that I didn’t find quick answers to on the ad-pages…


Hey @awallin. No. RuuviTag does not store data. It only broadcasts.

The feature is on our todo list and may be added later to Ruuvi Station and RuuviTag.

However, it will be most likely a lot of work to make the sync feature work flawlessly. We’ve seen how even large corporations have had severe syncing issues with their Bluetooth products and mobile apps. There are more than 7000 Android phone models to support…

I just released a blog post about the latest product launch. The working principle is briefly explained over there:

Also, it is explained on product descriptions in our webstore.

More info also here:

And here:

Hey, any update on this?

When I got my Ruuvitag I was actually surprised that it doesn’t store the measurements in memory.
And even a little disappointed that I can’t see the data of the time when I’m not at home and my phone can’t poll the tag.
Even when I’m at home I might be in a different room and have no connection to the tag for some time, and again I can’t see that data.
Another use case that I wanted to try is to track the temperature in my cellar. There, I don’t have internet and I’ll only go there with my phone every couple of days maybe.
Other people have asked for this as well.

So I believe it would be super nice if the tag would just store historical data (maybe one measurement per minute, so it can store data for multiple days). The phone can then ask the tag for any recordings since the last check.

It sounds like the devil is in the details and the implementation sounds complex.
But I believe it would be a really great addition to this fabulous piece of hardware!

We certainly are finding the best ways to implement this feature among other new cool features. A lot is happening behind the scenes right now :innocent:

Any update on this? I have just ordered ruuvi tag and was expecting at least 24h logging into the device itself?


So if I understood correct the hardware does have memory where it saves data and I would need beta version of the phone app to access this? Any estimate when this is available on Android?

Yes, you understood correctly.
We’re currently planning the Android development as well as ironing out the bugs in logging firmware, so it’s not possible to give exact schedule yet.

Awesome, can’t wait. Thanks!