- Version: 4.0
- Size: 5.45 MB
- Release date: 2026-02-18
- Min iOS: 17.6
- Bundle ID: com.jcb1973.marginalia
- Version: 3.2
- Size: 2.67 MB
- Release date: 2025-04-09
- Min iOS: 16.6
- Bundle ID: com.jcb1973.MultiplicationGenius
John Cieslik-Bridgen
Developer Portfolio
2 App Records