1.  If you deleted recordings in the app and found you still need them, you can get back your recordings from the trash folder:

Tap the “…” button which is on the upper-right of the screen in the recording list page (Figure 1.1), then “trash” to show the trash folder (Figure 1.2). In the trash folder, tap the recover button of the recording to put it back to the recording list page.

Figure 1

If you have emptied the trash folder or removed the recording from trash folder, then the recording is deleted in the app.  In this case you still can get back original recording files from the backup folder.

In default, the app will back all original recording files in the “Recorder Plus Files” folder of iCloud Drive. users can get back original recording files from that folder.

Reference this article for more detail information of the backup feature:

https://recorderplus.com/?ht_kb=backup-recordings-automatically

2. If your iPhone gets lost or the app is deleted, you want to get back recordings after reinstalling the app.

(1) If you have set iCloud as preferred storage before you reinstall the app, then all recordings were uploaded to iCloud. All you need to do is setting iCloud as preferred storage again in the app, then all recordings will be downloaded automatically.

Reference this article

https://recorderplus.com/?ht_kb=set-icloud-as-preferred-storage

(2) If you have not set iCloud as preferred storage before you reinstall the app, then all recordings were stored in the local storage of the iPhone. In this case you can get back original recording files from the backup folder.

Reference this article:

https://recorderplus.com/?ht_kb=backup-recordings-automatically

For more detail information about how the app works with iCloud drive to make your recordings safe:

https://recorderplus.com/?ht_kb=how-does-this-app-use-icloud-drive