SmartCheck
Count objects in a photo with three example taps
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SmartCheck - Count objects in a photo with three example taps

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Count materials, parts, products and crops from a photo. Tap three examples and SmartCheck detects similar objects, shows their positions, and lets you review, correct and save the result. No installation or object-specific training data needed. Try 10 counts without signing in. Built by students at Tokyo University of Science. Results depend on the objects and photo conditions.

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The fact that there’s no object specific training needed is a pretty interesting approach. That keeps the process straightforward.

Maker

 

Thanks, Iris! Exactly — we wanted to remove the whole “collect data → label → retrain” step for each new object.

You can just show it what you want to count and get started.

What would you try counting with it?🚀

Maker

Hi Product Hunt 👋
I’m Hiro, a master’s student at Tokyo University of Science and the maker of SmartCheck.

SmartCheck lets you count similar objects in a photo by tapping just 3 examples.

With task-specific AI counting, you may need to collect images, label data, and retrain a model before you can even test a new object. SmartCheck is designed to let you start with just a photo and 3 taps.

✨ How it works

  1. Take or upload a photo

  2. Tap 3 examples of what you want to count

  3. SmartCheck finds similar objects and shows both the count and detected positions

In real-world operations, the number alone isn’t always enough — you also need to know what the AI actually counted.

SmartCheck isn’t perfect yet. Complex cross-sections, objects with holes, and angled photos can still cause missed or duplicate detections.

That’s why SmartCheck shows every detected position, so you can review the result, correct mistakes if needed, and save it.

You can also save the setup as an AI Template and reuse it on future photos.

🛠 Built with GPT-6 Astra

I used GPT-6 Astra across much of the process — from product and UI design to implementation, iteration, and even the launch graphics and 30-second demo video.

As a student maker, it helped me move much faster between designing, building, debugging, and launching.

🚀 Try SmartCheck

✓ No app installation
✓ No sign-up required
✓ 10 free scans to start

👉

I’d especially love to hear from the Product Hunt community:

💬 What do you repeatedly count in your work today?
💬 What would you need before trusting AI-assisted counting in a real workflow?

Feedback on cases where SmartCheck doesn’t work well yet is especially valuable 🙏

OpenAI
GPT-6 Astra Challenge
What became possible in your product with Astra that was not practical before?
Maker

Before Astra, we could build the core counting technology, but turning it into a launch-ready product as a small student team wasn’t practical.

With Astra, we could work across the whole product in one workflow — building the web app, refining the UI, creating visuals and videos, and preparing the content for launch.

That meant we didn’t have to stop at a technical prototype. We could turn SmartCheck into something people could actually try, understand, and give feedback on.