https://t.me/audio_guide_bot
(source: https://github.com/st-matskevich/audio-guide-bot/commit/fa301d099d0f3f7402278d098a2a5516da4eba0e)

@audio_guide_bot – a Bot and a Mini App that provides an audio guide experience. Users can purchase tickets via the Bot and then scan QR codes using the Mini App to access accompanying images and immersive audio tours.

https://t.me/tg_mini_app_template_bot
(source: https://github.com/st-matskevich/tg-mini-app-template/commit/56782fd3014c9d7b7ac19b1d693d3bab9f81d9f4)

@tg_mini_app_template_bot - a Bot and a Mini App that serves as an example and template for engineers. Used to build @audio_guide_bot.