examples:
du -sh *
57M app.organicmaps_22121812.apk
42M app.organicmaps_22121812.apk.gz
41M app.organicmaps_22121812.apk.zst
55M chat.simplex.app_92.apk
50M chat.simplex.app_92.apk.gz
50M chat.simplex.app_92.apk.zst
102M com.github.howeyc.crocgui_28.apk
50M com.github.howeyc.crocgui_28.apk.gz
23M com.github.howeyc.crocgui_28.apk.zst
32M com.junkfood.seal_10814.apk
30M com.junkfood.seal_10814.apk.gz
30M com.junkfood.seal_10814.apk.zst
101M im.vector.app_40105220.apk
93M im.vector.app_40105220.apk.gz
93M im.vector.app_40105220.apk.zst
185M net.osmand.plus_4308.apk
161M net.osmand.plus_4308.apk.gz
159M net.osmand.plus_4308.apk.zst
83M network.loki.messenger.fdroid_3315.apk
52M network.loki.messenger.fdroid_3315.apk.gz
51M network.loki.messenger.fdroid_3315.apk.zst
79M org.mozilla.fennec_fdroid_1091120.apk
71M org.mozilla.fennec_fdroid_1091120.apk.gz
71M org.mozilla.fennec_fdroid_1091120.apk.zst
158M org.supertuxkart.stk_312.apk
155M org.supertuxkart.stk_312.apk.gz
153M org.supertuxkart.stk_312.apk.zst
note 0% compression ratio
unzip -lv com.github.howeyc.crocgui_28.apk | grep "\.so"
26271864 Stored 26271864 0% 00-00-1980 00:00 fd6af864 lib/armeabi-v7a/libcroc.so
26809088 Stored 26809088 0% 00-00-1980 00:00 1a4cf72c lib/arm64-v8a/libcroc.so
26237998 Stored 26237998 0% 00-00-1980 00:00 8170eb1d lib/x86/libcroc.so
27315394 Stored 27315394 0% 00-00-1980 00:00 7f4a2036 lib/x86_64/libcroc.so
unzip -lv network.loki.messenger.fdroid_3315.apk | grep "\.so"
43160 Stored 43160 0% 01-01-1981 01:01 5b32cf35 lib/arm64-v8a/libaesgcm.so
2046192 Stored 2046192 0% 01-01-1981 01:01 26631264 lib/arm64-v8a/libconscrypt_jni.so
7135240 Stored 7135240 0% 01-01-1981 01:01 7bb6505f lib/arm64-v8a/libjingle_peerconnection_so.so
...