| iOS Version | Release Date | Release notes |
|---|---|---|
| 1.0.1 | 9/14/2019 | Initial release, supported reading ASCII COMTRADE files. |
| 1.0.7 | 10/2/2019 | Added ability to read binary COMTRADE files. Added ability to delete entire chart at one time. Fixed bug where under some conditions user could not add a new chart. |
| 1.0.8 | 10/18/2019 | Added ability to show fundamental frequency phasors. |
| 2.0.0 | 5/11/2026 | Major update with iOS 26 support, refreshed interface, bundled sample records, and direct file imports of .cff, .osc, and .pl4 from Files, Mail, or AirDrop. Email to Support bundles record files into a single zip attachment. New settings for hiding samples, cursor colors, DFT frequency, and more. |
| Android Version |
Release Date | Release notes |
|---|---|---|
| 4 (1.0.4) | 9/28/2019 | Initial release on Android. |
| 10 (3.0) | 5/12/2026 | Complete rebuild sharing the same interface as the iOS app. Smooth pan and pinch-zoom plotting, A/B cursors with delta-time and cycle readouts, multi-channel display with per-channel scaling. Supports COMTRADE (.cff, .cfg/.dat), Beckwith OSC, and ATP/EMTP PL4 files. Two bundled sample records. Open files directly from Gmail, Files, Drive, and other apps. Email support with zipped diagnostic attachments. Dark mode, monochrome option, channel rename, configurable cursor colors. Requires Android 7 or later. |