The most convenient mini-app dvacha has already been released: now you can do a captcha directly from the basket.
You can take screenshots of a thread through the app - the bot will take a screenshot and send it directly to your personal message.
In the settings, you can turn on notifications for new replies - when a thread responds to your post, the bot will send a notification in a personal message.
There is synchronization between devices. If you have an access code, log in by pressing just one button - the app will check your subscription and activate the access code.
Otherwise, it's still the same good old Du - all functions and settings are supported.