Invoice Pro.

An expense tracking and personal budget management app with support for multiple banks and currencies. It operates stably for core functions but has payment system issues and free version limitations.

An app for tracking personal expenses and managing budgets with support for bank accounts, automatic transaction classification, and detailed analytics, but suffering from device synchronization issues, lack of Russian banks, and incomplete functionality in the iOS version.

Bill Reminder is a minimalist app for tracking recurring payments and bills with notifications. It works offline and is not tied to any bank.

Google Drive is a cloud storage service with cross-device synchronization, collaborative editing, document scanning, and offline access; however, it has experienced instability after updates, resulting in lost functionality and upload issues.

Free VPN for Android with unstable connection performance and excessive ads, claiming high speed and global servers, but in reality often fails to connect on the first attempt.

Adobe Acrobat Reader is a PDF viewer with support for comments, signatures, and basic editing (in premium); operates in Russia with restrictions, requires registration and payment, with intrusive feature advertising.

YouTube Music is a music streaming service with personalized recommendations, song lyrics, and video support, but with significant accessibility issues in some regions (including Russia) and extensive advertising in the free version.

SoundCloud is a free music, podcast and audio streaming service with a vast library of tracks including underground music and remixes, but with stability issues, intrusive ads in the free version, and blocking in Russia.