Accounting - Debits & Credits

Develop English listening comprehension, expand vocabulary, and improve reading and writing skills in one app.

Gamified app for learning 60+ languages through interactive mini-games, flashcards, and quizzes, supporting A1 to C2 proficiency levels, but plagued by instability, intrusive ads, and cross-device synchronization issues.

Accounting quiz application with ~700 questions, topics, and answer PDFs; designed for CPA/CFA exam preparation and deepening knowledge in finance and accounting.

Interactive accounting course with built-in simulator, enabling practice of double-entry bookkeeping in real-time; partially free, requires purchase for full access.

Duolingo is an app for independent language learning through short gamified lessons with pronunciation, reading, listening, and writing exercises. In practice, it frequently has issues with audio, progress synchronization, and content loading.

Mobile app for learning English from scratch, based on grammar, vocabulary, listening, and interactive exercises including trainer and detective stories. Free basic version with optional paid subscription.

An app for parallel reading of books in two languages (original + translation) with built-in translator, dictionary, and voice playback support for learning foreign languages through natural reading.

An app for learning foreign languages through gamified mini-lessons with flashcards, illustrations and audio, supporting 55+ languages, but frequently experiencing bugs with subscription synchronization, audio and performance.