My app Recent Menu is now open source, and not available from the Mac App Store anymore. Feel free to download the source code from GitHub or the app from my website. Source code as well as the binary are available under a MIT license.
I have thought of making Recent Menu open source software for quite some time now, and recent difficulties with getting a bug fix approved by Apple for Mac App Store distribution facilitated my decision to switch to direct distribution as well as to open the source code, as I don’t have any commercial interest in this app.
I’ll try to add some update detection code to Recent Menu soon, e.g. via the Sparkle framework, so that you don’t have to check manually whether a new version of Recent Menu is available or not.