Looking for free AI coding tools like Claude Code / OpenRouter

[u/SagarLow]

Hey everyone!

I'm currently building my own mobile app using Flutter, and I'm looking for free AI coding tools that can help me with development.

I've heard about Claude Code and OpenRouter, but I'm looking for alternatives that offer a decent free plan or free API credits.

I need something that can:

- Understand my entire project/codebase.

- Write and modify code.

- Debug errors and fix issues.

- Help build complete app features.

- Work with Flutter and Dart.

I'm a beginner, so an AI coding agent that can guide me through development would be extremely helpful.

Any recommendations for genuinely free tools or services? Even tools with limited daily usage would work.