CodeTrain vs Supercov

CodeTrain is a Socratic AI coding tutor: it asks questions, reviews what you write, and runs your tests, but never writes the code for you. Free to start.

Supercov turns uncovered paths into the next focused test for coding agents, then verifies the improvement with your existing test suite.

About CodeTrain

CodeTrain is a Socratic AI coding tutor: it asks questions, reviews what you write, and runs your tests, but never writes the code for you. Free to start. Two steps, about a minute, and the first one is going to catch you. The tutor's replies are pre-recorded, so it knows the handful of ways this lesson usually goes wrong. The real one reads whatever you actually wrote, and it is free for ten lessons a month.

About Supercov

Supercov turns uncovered paths into the next focused test for coding agents, then verifies the improvement with your existing test suite. Before a reset, or overnight, turn idle agent time into coverage that stays with the repository. Every pass returns fresh, executable evidence, so agents can keep iterating around the clock while regressions are caught before they ship. Write first test Use coverage to choose one useful test. Start a new task in the repository, paste the prompt, and send.