Gadfly

Meet Gadfly

Gadfly is a voice-based practice tool for technical interviews. Work through algorithms, system design, and behavioral questions aloud, explaining the reasoning rather than only submitting an answer. Follow-up questions challenge the approach, while supported coding exercises let users practise translating a plan into Java or Python. After a session, feedback identifies specific weaknesses and suggests what to work on next. The service remembers recurring problems and brings them back in later practice, creating a loop of explanation, diagnosis, and revision. It runs in supported desktop browsers and is designed for preparation before an interview. A free introductory allowance gives users a way to try the conversation and feedback format.