Create and manage shared checklists with multiple users. Add tasks, set due dates, and mark items as complete. Customize themes with dark mode support. Access premium features without ads by linking a phone number. Backup data automatically.
Control video or photo capture, preview live feed, browse and download files, adjust recorder settings, plan routes, track paths, and take location photos. Connect via WiFi from iPhone or iPad. Share photos on social media and make instant calls.
Read QR codes to open web pages. Edit URL parameters before opening. Tap home screen to launch camera for QR scanning. Share QR data via activity sheet when enabled. Set custom background and button URL via iTunes file sharing.
![checka! [チェッカ] app icon](https://is1-ssl.mzstatic.com/image/thumb/Purple116/v4/c2/50/42/c250427f-4c3c-2f73-f466-6131ff29c3f6/AppIcon-0-0-1x_U007emarketing-0-7-0-85-220.png/512x512bb.jpg)
