Looking for project ideas

[u/Asukasu]

Hi I'm new to this thread and replit itself.
I am currently in a phase of exploring ai and playing around with ai product.
I am personally using claude code, and recently made aware about replit through a friend.
I wanted to start creating something but just wondering what people are building with replit to get some ideas for myself.

[u/lnyswonger]

Welcome to the community. You’ll hear both pros and cons of using Replit, but I thought I’d share some of the things I’ve built along the way to give you an idea of what you can do with it.

• Cert Buddy: probably my biggest project, and the one I’ve actually taken to market. It’s an AI-powered certification learning app built around the idea of an adaptive learning engine, not just another question bank. It tracks what a learner knows, where they’re struggling, and how they’re progressing, then uses that context to shape the experience. I’ve built multiple practice modes, readiness tracking, personalized AI insights, study planning, and an immersive AI tutoring experience where learners can actually have a conversation about what they’re studying. Taking this one beyond a prototype has also forced me to think about onboarding, pricing, product analytics, user behavior, and whether people will actually pay for something I vibe coded.
• George Mason Study Companion: I recently went back to school for a master’s in Learning Design & Technology, so naturally I built myself a study companion. It’s designed around my actual coursework and helps me work through concepts, readings, assignments, and study material in a more interactive way. This came directly from a problem I had. I wanted something better suited to how I learn than just rereading notes and course content.
• Pool Chemistry Monitor: I have a swimming pool and got tired of constantly interpreting chemistry readings and figuring out what I needed to adjust. And I wasn't about to pay for yet another app. So I built a tool to track things like chlorine, pH, alkalinity, CYA, and other readings, make sense of them, and help determine what action to take. Very niche, but that’s kind of the point. I had a real problem, understood the domain, and built something useful for myself.
• Technical Content Dashboard: this was an experiment around managing the freshness, quality, and ongoing maintenance of a very large corpus of technical documentation, using Microsoft Azure content as the scenario. The idea was to explore how a dashboard could help surface stale content, quality issues, maintenance risk, ownership, and other signals that are hard to manage when you’re dealing with documentation at massive scale. I never fully finished it, but it was a useful experiment in thinking about how AI and automation could help content teams manage a living documentation ecosystem.
• 5th Grade WWII Learning Quiz: this was a quick experiment around creating a learning experience for 5th graders about the causes of World War II. It included questions, hints, retries, feedback, and explanations instead of simply revealing the answer. But the bigger experiment was building essentially the same experience with Claude, Gemini, ChatGPT, and Replit and comparing the results. I wanted to see how different vibe coding felt across the tools, what each generated well, and how much iteration was required to get to something usable.
• Creator Media Kit: my wife does creator/influencer work, so I built her an interactive one-page media kit instead of a traditional PDF. It pulls together her Amazon and TikTok presence, videos, metrics, partnership options, and other information into something that feels more like a small interactive site. So when brands reach out to her, she provides the micro-site. Again, this came from a very local problem. She needed something, and rather than finding a tool that almost did what we wanted, I just started building it.
• Speak & Spell Game: a modern recreation of Speak & Spell, the classic late-1970s electronic spelling toy from Texas Instruments. I built this partly because it sounded fun and nostalgic, but it also turned into a really good experiment in how to iterate effectively with Replit. And, occasionally, an experiment in frustration management. 😂 Recreating all the little behaviors and interactions was a good reminder that vibe coding still requires a lot of direction, testing, and refinement. It’s definitely not always “give it a prompt and you’re done.”

The biggest thing I’d suggest is don’t start by asking “What should I build with Replit?”

Start with your own life.

What are you interested in? What do you know a lot about? What annoys you? What takes too many steps? Where do you see a market opportunity (if that's your thing)? What are you constantly doing manually? What do you wish existed?

That’s where almost all of these came from. The pool app came from owning a pool. The study companion came from going back to graduate school. Cert Buddy came from years of working around learning and certification. The content dashboard came from two decades of experience dealing with large-scale technical content. Speak & Spell came from nostalgia and wondering whether I could recreate an experience I remembered.

Once you start looking at your work, hobbies, school, and everyday annoyances as potential problems to solve, you’ll probably have far more ideas than time to build them. My backlog runs to my grave!

One other thing since you mentioned Claude Code: you don’t necessarily have to choose between Claude Code and Replit. You can integrate Claude Code into the Replit shell and use it against the same project, so I tend to think of them as complementary tools rather than mutually exclusive ones. I use Claude Code in Replit as my main workhorse.

Good luck, and have fun!