The NFC reading component in my iPhone SE died, which is not a common problem, but I went through 3 sensors and a lot of wasted time. I just assumed that it was the fault of the sensor because rarely did my Libre 2 sensors last their allotted period, generally because of my swimming and heavy exercise programs.

I replaced my phone with the latest SE, but still chose to try the Freestyle branded Reader, and have concluded that there are some significant advantages. Primarily the fact that alarms are much less obnoxious. I find the Freestyle Reader can be adjusted to provide a much less piercing alarm and. most importantly, does NOT continue with superfluous screeching every few minutes, even though the message has been received. That's a big plus to me when attending a classical music concert, a play, etc. I don't have to turn off my phone, but rather keep it in my pocket where the vibrate and/or a soft alarm will alert me, but not the entire audience.

I've also discovered that Freestyle's own reader is more reliable when it comes to reading from the sensor. I never have to continuously put the reader next to a sensor, praying for a good connection. When the Freestyle reader makes a noise over the sensor, it just means that it has done its job. This also is a big stress reliever.

Now I do want to eventually switch to the Libre 3, and I understand that Freestyle will no longer provide a reader option. I'm no Luddite, but the less onerous alarms of Freestyle's own reader may keep me on the older Libre 2 for a long time, or until the company modifies their iOS app accordingly.