What free online tool should I build next for ToolMindAI?

Hi everyone! 👋

I'm building ToolMindAI, a free online tools platform for students, creators, and everyday users.

The platform currently includes useful student tools such as an Attendance Calculator, CGPA Calculator, Percentage Calculator, Grade Calculator, and Study Time Calculator, along with creator tools and practical utilities.

My goal is simple: build genuinely useful tools that are fast, easy to use, mobile-friendly, and accessible without registration.

I'm now deciding what to build next, and I'd really value your feedback.

What free online tool would you genuinely find useful and want to see added to ToolMindAI?

I'm open to ideas for students, creators, productivity, everyday utilities, or something completely different. 🚀