What type of Android device are you running with version 4.3?
I tested Collector 17.0.4 using a Samsung Galaxy S3, running 4.3, and it didn't crash when using the GNSS Capture map in the 'Try it' account.
Can you please test using the free maps to see if the app still crashes on Android?
Collector 17.0.4 crashes on a Nexus 7. It was running Android 4.3; I updated it to Android 4.4.2 and Collector 17.0.4 still crashes when I try to add a point feature. Polygons are OK.
Collector 17.0.4 works fine on a Nexus 10 running Android 4.3.