Termux

Installation for Android 5 and 6:

Reference: https://android.stackexchange.com/questions/245738/how-to-install-termux-on-old-android-5-devices-using-the-official-archive

• Download APK from https://archive.org/download/termux-repositories-legacy
• edit /data/data/com.termux/files/usr/etc/apt/sources.list (use vi),
• replace last line with: deb https://packages.termux.dev/termux-main-21 stable main,
• apt remove science-repo,
• apt remove game-repo.