: You can find this specific build (4852/4970 series) in the Librera Reader 8.8.4-fdroid collection on the Internet Archive.
Librera Reader - Free and Open Source Android App Repository Download Librera build 4970 armeabi v7a apk
: Build 4970 is a legacy version. Newer builds, such as version 9.3.75, typically require Android 7.0 or newer . : You can find this specific build (4852/4970