FOP Nikulov Leonid Anatoliiovych

Official Android App Developer from Ukraine UA

About Us

We specialize in creating high-quality educational, utility, and trivia applications for Android devices. Our mission is to make learning and professional tools accessible for everyone through interactive mobile experiences.

Our Applications

C# Interview Trainer

An interactive educational application designed to help software developers master C# and .NET concepts for technical job interviews. Features customizable practice sessions, mock exams, and categorical performance analytics.

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CLR (.NET) Interview Trainer

An interactive educational application designed to help .NET engineers, backend developers, and system architects master CLR internals, memory layout, Garbage Collection, and concurrency for Middle & Senior technical interviews. Features 512 curated Middle & Senior Q&As, deep architectural explanations, customizable mock interviews, timed exam simulation, and categorical performance analytics.

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Pattern Interview Trainer

An interactive educational application designed to help software engineers master GoF Design Patterns, SOLID, GRASP, and Software Architecture for technical job interviews. Features 512 curated Junior & Middle Q&As, practical code snippets, customizable practice sessions, timed exam simulation, and categorical performance analytics.

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Algorithms Interview Trainer

An interactive educational application designed to help software engineers master Data Structures and Algorithms (DSA) for technical job interviews. Features 512 curated questions & answers, customizable practice sessions, timed exam simulation, complexity breakdowns, and categorical analytics.

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C Interview Trainer

An interactive educational application designed to help software developers master C programming, pointers, manual memory management, and low-level systems concepts for technical job interviews. Features customizable practice sessions, mock exams, and categorical performance analytics.

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C++ Interview Trainer

An interactive educational application designed to help software developers master Modern C++, STL, and low-level systems concepts for technical job interviews. Features customizable practice sessions, mock exams, and categorical performance analytics.

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Java Interview Trainer

An interactive educational application designed to help software developers master Java, JVM internals, and modern Spring frameworks for technical job interviews. Features 512 Junior & Middle Q&As, customizable practice sessions, timed mock exams, and categorical performance analytics.

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Python Interview Trainer

An interactive educational application designed to help software developers and job seekers master Core Python, OOP, AsyncIO, Memory Management, and backend engineering for technical job interviews. Features 512 curated Junior & Middle Q&As, code-rich explanations, customizable mock interviews, timed exam simulation, and categorical performance analytics.

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JS Interview Trainer

An interactive educational application designed to help software developers master JavaScript and TypeScript concepts for technical job interviews. Features customizable practice sessions, timed mock exams, category breakdowns, and performance analytics.

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United Kingdom Quiz

A comprehensive trivia game exploring the rich history, geography, culture, and iconic music of the United Kingdom.

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Capital Guess Quiz

A comprehensive world geography quiz featuring flags and capitals of all countries.

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Ukrainian Quiz

An educational game focused on the history, geography, and culture of Ukraine.

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Retro Calc B3-36 Emulator

An authentic emulator of the legendary Soviet engineering calculator B3-36. Features a realistic 3D design, glowing VFD display, and precise engineering logic from the 80s.

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Legal & Contact

Organization: FOP Nikulov Leonid Anatoliiovych

Email: softdevelop.ua@gmail.com