Petchecka

Дневник.ру is a paid diary app for schoolchildren and parents offering grade viewing, homework assignment tracking, notifications, and child location tracking, but suffers from significant stability issues and aggressive monetization of basic features.

App for creating and tracking habits with time-of-day categories (morning/afternoon/evening), progress statistics and challenges, but requires a paid subscription from the first day of use.

App for booking group fitness classes with schedule viewing and membership tracking, but with significant issues in subscription management, payment processing, and lack of built-in support.

iOS mobile calendar with Google Calendar integration, offline mode support, and reminders. Allows viewing events in 8 display modes, creating recurring events, and responding to invitations. Requires a subscription for full functionality.

AnyList is an app for collaborative shopping list management with real-time synchronization, recipe integration, and meal planning.

TimeBloc is a time-blocking daily planner that lets users organize their day into timed tasks and events with drag-and-drop scheduling, routines, calendar integration, and progress tracking. Free version is functional but has widget bugs and limited features; premium unlocks unlimited routines and calendars with advanced notifications.

An app for managing short-term rental businesses featuring a calendar, booking lists, and synchronization with Avito and Sutochno, partially requiring a subscription.

Mobile client for managing Obsidian tasks with push notifications, widgets, and synchronization via iCloud Drive / Dropbox, focused on Markdown format and Tasks plugin.