That makes me think of the Creaceed indie dev. When they release an app they usually have a short technical description of what they are doing (e.g, image preparation for OCR[1], live collaboration with CRDT and OT[2]).

I guess it's always an exercise to reveal enough to spark interest but not too much to keep the secret sauce.

[1] https://medium.com/@creaceed/the-making-of-prizmo-5-4006558c...

[2] https://medium.com/@creaceed/drawing-together-behind-the-sce...