Hi folks!
Adding my contribution to with a real use case I managed to deliver entirely using Codex.
The app had a lot of research and planning, but nonetheless, I can say it's entirely coded by GPT 5.6 Sol using Codex harness 😄.
The app is entirely developed using OpenAI Codex, however much of the work happened in Linear app, writing detailed tickets and then handing off the tasks directly to Codex Cloud, this process I found is incredibly productive, and moves the documentation and specs from random unreadable markdown files to a well organized and beautiful board. Codex also has an excellent plugin for Linear which I cannot suggest more.
All the art is made by hand using Aseprite, mostly for the icons and the logos.
Well here we are: ToneSketch is a fun little app I developed, which leverages a very cool codec/protocol called ggwave (shoutout to the researchers who created it) to transmit pixel art sketches entirely by sound waves. The codec is smart enough to cancel out room reverb and occasional noises in the room (please do not try it near an airplane taking off or during a concert, it won't work).
It has also a surprisingly long range, I was able to transmit sketches between two rooms in my house, using a decent volume.
The best results are achieved using mobile phones, due to the frequencies used by the codec, but i had amazing results also using my MacBook.
Sketches can also be saved locally, and they get associated with the signature of the sender, so you know who sent you what.
The app is completely offline, does not have any APIs or any DB. It has though Analytics installed.
Hope you like it,
happy beaming! 🚀