discoDSP has released OB-Xd 1.3 for iOS.
- Enhanced presets browser.
- Scrollable GUI window.
They have also released OPL 1.4 for iPadOS, macOS, Windows and Linux as AudioUnits, VST, VST3 and Standalone.
- Added 2.000+ categorised presets by type.
- Added Preset folder browser.
- New GUI SVG background.
- Minor fixes and enhancements.
It's also available at Apple App Store (iPadOS) for a introductory price of $3.99.
Additional information can be found at OPL page.