MacSim Version 0.8 b1 Available

9 Sep 2025

I am pleased to announce a new update to MacSim. This version has a completely revamped interface and many bug fixes. It also uses Apple’s new interface frameworks so the minimum OS version to run it is now 10.14. Unfortunatly it is also unsigned which means the first time you run MacSim you will have to approve opening it by visiting the Privacy & Security panel of the System Settings.

Instructions for opening an app from an unregistered developer can be found on the Apple forum. Hopefully an upcoming version will be signed and eventually be in the app store. The basic MacSim will always be free but there may be a paid version with extra features in future.