https://t.me/tgdates_preview_bot
(source: https://github.com/harshil21/TGDates/commit/3e3465be29b13aebe0ce685f232f66d85e625c13)

a Mini App that provides an user interface for selecting dates from a calendar. It is meant for developers as a easy, customizable, reusable, little code solution they can use in any bot. Users can select date ranges, times, and much more.

Very simple, but the idea is great. Would be great to create a API for that, so anyone can use the app in their bots.

Apart from the date - the selection of time slots like in mine submission:
https://contest.com/mini-apps/entry4538

It is very simple, BUTI think it is to your advantage) Because not all developers know about `react`, `vue`, and other popular tools.

Some developers need to start with something simple! This is a very good example for them

Definitely like it!