The latest version is v3.11.9 (3121). Open and select > to display the version of your copy.
To update to the latest version:
Most topics relevant to using Posterino are covered in the Posterino User's Guide.
The table below gives an overview which major version of Posterino can run on which version of macOS:
| macOS | Name | Posterino 3 | Posterino 2 | Posterino 1 |
|---|---|---|---|---|
| version 10.4 | Tiger | - | - | yes |
| version 10.5 | Leopard | - | - | yes |
| version 10.6 | Snow Leopard | - | yes | yes |
| version 10.7 | Lion | - | yes | yes |
| version 10.8 | Mountain Lion | - | yes | yes |
| version 10.9 | Mavericks | yes | yes | - |
| version 10.10 | Yosemite | yes | yes | - |
| version 10.11 | El Capitan | yes | yes | - |
| version 10.12 | Sierra | yes | - (2) | - |
| version 10.13 | High Sierra | yes | - | - |
| version 10.14 | Mojave | yes | - | - |
| version 10.15 | Catalina | yes - v3.5.1+ | - | - |
| version 11.0 | Big Sur | yes - v3.9+ (1) | - | - |
| version 12.0 | Monterey | yes - v3.11+ | - | - |
| Download v3 | Download v2 | Download v1 |
(1) Starting with version 3.9, Posterino also runs on Apple Silicon based Macs.
(2) Apple has removed a memory management system called "Garbage Collection" from macOS 10.12 Sierra. Posterino 2 was build on "Garbage Collection". That's why you see the stop sign on top of the app icon and there is no way to start Posterino 2 under macOS 10.12 Sierra. We did address this situation, totally re-writing Posterino and the result was the advent of Posterino 3 back in November 2014.
If you have a question regarding the macOS compatibility, please contact me.