PQDIF Viewer (under construction)

iOS

Comtrade Viewer 2.0.0 is a major update with iOS 26 support, a refreshed interface, bundled sample records, and direct file imports from Files, Mail, or AirDrop for .cff, .osc, and .pl4 records.

Tap a sample record on the empty screen to try the app without your own data, or use the Open Record button to load a COMTRADE (.cfg + .dat or .cff), Beckwith OSC, or ATP/EMTP PL4 record from your device.

Android

Comtrade Viewer 3.0 is a complete rebuild with the same modern interface as the iOS app.

Supports Android 7 and later, bundled sample records, and direct file imports from Gmail, Files, Drive, and other apps for .cff, .osc, and .pl4 records.

Tap a sample record on the empty screen to try the app without your own data, or use the Open Record button to load a COMTRADE (.cfg + .dat or .cff), Beckwith OSC, or ATP/EMTP PL4 record from your device.