Take notes with search and folder organization. Change font, size, and main color. Set password lock. Access premium features for 280 yen per month with automatic renewal. Manage subscriptions through Apple ID settings.
Create profiles with photos and detailed information. Search for matches based on interests and values. Send and receive messages. Use a ribbon mark to indicate openness to single parents or remarriage. Verify identity with documents.
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.
![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)