Ever left home and couldn't stop thinking — did I lock the door? LockSure is a simple web app that helps you confirm everything before you leave, so you never have to go back to check again. ✓ Tap through your exit checklist (door, gas, water, power, windows) ✓ Take a photo of the lock as visual proof ✓ See a timestamped confirmation you can check anytime ✓ Works in 4 languages: English, 中文, 日本語, 한국어 ✓ No installation needed — opens in any browser ✓ All data stays on your device, never uploaded One-time payment. Use it forever.

👉 Access your app here: https://locksure.vercel.app