Niantic Ingress Original vs. Ingressopt

$ ls -s1 com.nianticproject.ingress-v1_18_1.apk signedIngress_v1_18_1.apk
21192 com.nianticproject.ingress-v1_18_1.apk
20840 signedIngress_v1_18_1.apk
$ md5sum com.nianticproject.ingress-v1_18_1.apk signedIngress_v1_18_1.apk
1510d8b7d219f0554d1b2f9340a203ca  com.nianticproject.ingress-v1_18_1.apk
44e9e98e79b2e166dc794dcbb6ca080c  signedIngress_v1_18_1.apk

$ apktool d com.nianticproject.ingress-v1_18_1.apk
$ apktool d signedIngress_v1_18_1.apk
$ diff -Naqr com.nianticproject.ingress-v1_18_1 signedIngress_v1_18_1 \
| sed 's#^Files [^/]*/\(.*\) and .*#\1#'

apktool.yml
assets/common/data/coda-lg.fnt
assets/common/data/coda-med.fnt
assets/common/data/coda-sm.fnt
assets/packed/data/common.atlas
assets/packed/data/common.png
assets/packed/data/upgrade.atlas
assets/packed/data/upgrade.png
assets/portal_info/data/portal_ui.atlas
assets/portal_info/data/portal_ui.png
assets/upgrade/data/mod_button-RES_SHIELD.png
assets/upgrade/data/mod_detailed-RES_SHIELD.png
assets/upgrade/data/mod_icon-RES_SHIELD.png
assets/upgrade/data/resonator_details-empty.png
assets/upgrade/data/resonator_details_high_level.png
assets/upgrade/data/resonator_details.png
assets/upgrade/data/resonator_icon_hi.png
assets/upgrade/data/resonator_icon.png
lib/armeabi/libgdx.so