Names have histories, and sometimes they are not really logical. From 2008 we had an app called MindNode Pro and an app called MindNode Lite, which was a limited free version. They had version number 1.
2012 we stopped offering MindNode Lite on the App Store and had a free Demo version on our Website. After that, we only offered an app called MindNode Pro, version number 1, but there wasn't an alternative not-Pro version and that caused some confusion.
In 2015 we updated MindNode to a new version number and name; MindNode 2 for Mac. This was our first paid upgrade.
Meanwhile, our iOS app MindNode for iOS went through all the version numbers from 1 to 4.
As we were thinking about names for the next major upgrade version of MindNode, we really wanted it to be very similar for iOS and macOS, because the apps are very similar as well and the different version numbers always caused confusion. So we decided to skip version numbers 3 and 4 for Mac and went straight to version number 5 in 2017. Which then allowed us to continue the count with version numbers 6 (2019) and 7.
With the release of MindNode 7 in 2020, we also introduced our new cross-platform (iOS & Mac) subscription called MindNode Plus.
We noticed over the course of this year that our previous release versioning scheme no longer fits our new development cycle: We no longer want to ship major updates; instead, we want to focus on regular, incremental improvements. This is why we switched to a year-based version number. Going forward, our release numbers will be comprised of the current year, followed by the release number.