Question: Do you know of a service that provides step-by-step guidance on solving common interview problems, such as coding challenges or whiteboard exercises?

Final Round AI offers live help and advice as you go through an interview. It's got features like live transcription, mock interviews and a coding copilot (in beta) for coding interviews. The service integrates with big meeting software without needing any downloads and offers end-to-end career support, so it's a good all-purpose tool for interview prep.

Interview Solver is a desktop app geared for live coding and system design interviews, in particular for candidates trying to get a job at FAANG companies. It can solve LeetCode problems and other technical interview challenges instantly, acting as a copilot with tools like screengrab tools and syntax highlighting. That makes it a good option for experienced candidates who want a quick and authoritative answer to interview questions.

Pgrammer offers personalized learning experiences through customized coding challenges and live hints. It supports more than 20 programming languages and can adjust the difficulty of questions depending on the interviewee's role. With features like saved coding challenge history and advanced solution analysis, Pgrammer is a good option for both candidates and interviewers.

For those who want to improve their communication skills, InterviewSpark offers personalized and interactive interview prep. It uses AI and machine learning technology to offer feedback on answers and performance benchmarking. The service is designed to help people improve their answers and score better, and thus pass job interviews.