Zoner Antivrus Free was actually the best performing freeware in the AV-Test survey. It found 3 in every 10 malicious apps. It missed 7 in every 10 malicious apps. This was considered to be better than the other freeware apps on test, which appear to have found only 1 in every 10 malicious apps and missed the other 9.
I know Zoner is currently trumpeting its success as the highest-ranked free AV but a 70% failure rate is nothing to crow about (which may explain why Zoner doesn't actually mention specific figures.)
That said, I'm grateful to earlier posters here who pointed out that this much-publicised AV-Test survey is, in fact, a bunch of crap, seeing as how it excluded freeware from major developers like AVG.
Considering that the number of nasties out there in the Android world is a tiny, tiny fraction of the total in Windows Land -- and that the exercise of commonsense in choosing any Market app is still the best AV of all -- then it would seem that physical security in the form of dependable remote locate / swipe / lock / brick is the most essential app of all on an Android phone or tablet.
I'm looking forward to PCA's comparison test of the new £29 Norton security suite with freeware like AVG's Mobilation -- the very product AV-Test should've looked at but conspicuously failed to bother with.
AVG Mobilation details here:http://www.avg.com/us-en/antivirus-for-android