This app offers free practice tools for standardized exams in Chemistry, Biology, and Russian Language. It includes interactive simulations, animations, and 3D models to aid learning. Progress is saved locally or can be synced with Telegram.






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This app offers free practice tools for standardized exams in Chemistry, Biology, and Russian Language. It includes interactive simulations, animations, and 3D models to aid learning. Progress is saved locally or can be synced with Telegram.






Prepare for the 2026 Biology Unified State Exam with this comprehensive offline app. It offers practice tests, video explanations, theory modules, and interactive trainers to help you master the subject.






Prepare for the Chemistry Unified State Exam with offline access to practice tests, video explanations, theory, and trainers. Master formulas, reactions, and terms with detailed explanations and error tracking.