Contact

I read every message.

📧 renbeijin@gmail.com

Response within 48 hours • Aion Ren, developer

What to Contact Me About

Bug reports: Found a tool that's not working? Let me know what browser and OS you're using.
Tool requests: Have an idea for a useful online tool? I'm always looking for the next thing to build.
Collaboration: Interested in working together on a tool or integration? Reach out.

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What to Include in Your Message

Bug reports: Which tool, what browser/device, what went wrong, and a screenshot if possible.
Tool requests: Describe the tool you wish existed and how you would use it. We prioritize requests with clear use cases.
Feedback: Love a tool? Hate something? Tell us — we read every message and use feedback to decide what to improve next.

Response Time

We typically respond within 24-48 hours. Complex bug reports may take longer as we investigate and reproduce the issue before replying.

📧 Email Directly

Prefer to skip the form? You can also email us directly at renbeijin@gmail.com. We read every email personally.

🧰 Popular Tools

Have a question about a specific tool, found a bug, or want to request a new calculator? Send your message to renbeijin@gmail.com and we will get back to you as soon as possible.

We Value Your Input

QingChuan Tools is built for real users. Your feedback directly shapes which tools we build next. Whether it's a bug report, a feature request, or a suggestion for a new calculator, every message gets read. We typically respond within 48 hours.