Use APKPure App
Get FreeMind Reader old version APK for Android
Open FreeMind files emails, local files, DropBox, etc...
Free, no ads. Take your FreeMind mind maps with you! This app displays FreeMind ".mm" files from your file browser, Gmail, Email, Dropbox, Google drive, etc... Long press a node to copy the text and, for nodes that have links, you can copy the link or browse it directly on your device.
Does not include a file browser, so you will need to find the file on your phone or in email first and then click on the file to open the app.