When comparing ZArchiver vs OI File Manager, the Slant community recommends OI File Manager for most people. In the question“What are the best file explorers on Android?” OI File Manager is ranked 9th while ZArchiver is ranked 15th. The most important reason people chose OI File Manager is:
It asks only for Storage permissions. No other things are required.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Super easy to use
The app interface is super simple and easy to use.
Pro 7Z and ZIP creation
Multiple archive format decompress. One of the few Android File Managers that creates 7Z, and without installing an additional plugin. LZMA2 is unsafe and less efficient than the original LZMA. Use: 7Z LZMA Non-Solid, RAR 5 LZSS/PPMd Non-Solid, or ZIP Deflate.
Pro Few permissions
It asks only for Storage permissions. No other things are required.
Pro Lightweight
The app takes only a few seconds to download, as its size is only about 1.5 MB to download and installed (on MIUI) takes only ~6 MB full size.
Pro Open Source
OI File Manager is available for free under the Apache License 2.0.
Pro ZIP file extraction support
OI File Manager supports extracting ZIP files.
Cons
Con No additional features (suite)
No other features such as networking connections, junk flies cleaner, built-in media player/viewer/editor. But that might be a pro, since nothing else is asked for this app permission.
Con Outdated
At this moment I'm writing, it was updated last in 2017.
Con Ugly UI
The GUI is old and deprecated. But what would you expect for such a small app?