If history does not appear on your other device, check the supported pair, local network and sync controls first. Keep both apps open while testing discovery.
The documented pairs are Android or iOS with Windows or macOS. Direct phone-to-phone and Windows-to-Mac sync are not supported.
The Help Center documents port 7777. Allow VoicePad for the trusted private network you use for sync. If configuring a rule manually, scope it to that network; opening all public profiles is unnecessary for home-network sync.
Restart both apps and try again. On Android, pull down to refresh history or use Import from Windows App if offered.
Use a compatible history export and manual import. The documented USB workflow is one-way from Android to Windows. Save readable TXT exports for reference; use a supported structured file for restoration.
More platform-specific guidance: VoicePad Help Center.