I would use Go Button from Figure 53 (only works on Apple devices) for your playback. Free if you only are doing one show. Works with a variety of remotes, which you could sew into your costume or something. Turn-key solution and rock solid. I’ve used it for several shows/events. Source: over 2 years ago

Go Button, by the same people who make QLab. Good enough that I've run a couple of simple shows on it. Source: over 2 years ago

My usual suggestion would be gobutton but it's iOS only. I'd be surprised that you couldn't use some similar keywords to come up with an Android app. Source: about 3 years ago

I’ve gone through this process for my email client Kanmail [1]. The third party audit is not required for email clients that run on end users computers and store credentials locally. By the looks of it Pegasus falls into this category and should not have any issues getting approved (still need the YT video and such but the Google team are surprisingly responsive and helpful in my experience). [1]... - Source: Hacker News / about 2 years ago

I’m building a desktop email client [0] that has $45 lifetime licenses. Made to scratch my own itch I’ve been using it as my only client for 4 years now, barely makes any money though! [0] https://kanmail.io. - Source: Hacker News / over 2 years ago

I use pyinstaller for my Kanmail email client [1] and it’s fantastic, but at creating Mac app bundles or Windows exes. Tried making actual standalone binaries for another project and, as others have mentioned, they’re incredibly slow to startup. Still, I am a huge fan of the project and it makes it possible to make webview desktop “apps” (like or hate them) with Python. [1] https://kanmail.io. - Source: Hacker News / over 2 years ago

There's pywebview (https://github.com/r0x0r/pywebview/) which is a Python lib that uses whatever native webview implementation exists. Obviously means some compatibility work between each OS, but gives out very small apps what work very well on the whole. I'm using it on my cross platform email client (https://kanmail.io). - Source: Hacker News / almost 3 years ago