No, it is a Mer-derived Linux with Qt as the UI toolkit. The OS is called Sailfish.
The Android app capability comes from an Android runtime. I have not tried it myself but the compatibility layer could come from Myriad's "Turbo Dalvik," which is something I heard rumored some time ago, or Jolla might have done it themselves.
The Android app capability comes from an Android runtime. I have not tried it myself but the compatibility layer could come from Myriad's "Turbo Dalvik," which is something I heard rumored some time ago, or Jolla might have done it themselves.