You can make your own similar device, buy a used Samsung S3, build your own Android 4.1.2 or install equivalent CyanogenMod on it and this app:
https://github.com/darshakframework/darshak which accomplishes the exact same thing: warns you of stingray towers, stealth SMS, ect.
Interesting. Will try to do this.
If your Samsung S3 is rooted then you can just download the APK
https://play.google.com/store/apps/details?id=com.darshak&hl=enIt interacts with any Intel/Xgold baseband
If you want to see something interesting, install it and go to the nearest airport. Watch your baseband warnings go off because all airports have some kind of shady nation state attacks going on to identify and track passengers. Most airports worldwide are running Stingray towers too by the DEA to catch drug smugglers but of course it's a wide net capturing everybody