... building SmartCheck a browser-based tool that counts similar objects in a photo after you tap just 3 examples . No model training. No app install. Just open it in your browser, tap 3 objects, and let AI do the counting. What surprised me while building it: Getting the number isn t the hardest part. Trusting the number is. In real-world work, you need to know: What did the AI actually count? Did it miss anything? Did it count something ... ... shouldn t? That s why SmartCheck