Challenge Log - チャレンジログ -

Here's the English translation:

This is an app that makes recording and maintaining daily studies, tasks, and habit-building "simple" and easy.

**Main Features:**
• **[NEW]** Easy login with Google authentication
Sign in smoothly with your Google account. Start using the app immediately without the hassle of new registration procedures.

• Simple and intuitive operation
Clean design that anyone can use intuitively. Simply tap a date on the calendar and stamp to complete your record.

• Clear visibility of your achievements!
Visualize your daily efforts with abundant stamps. Monthly stamp counts are tallied and displayed, so you can see your "continuation results" at a glance.

• Calendar sharing function
Share challenges with friends and companions! See each other's efforts, encourage one another, and boost motivation together.

• Stamp additions
Choose your favorite stamps and record in your own style. Make daily recording more enjoyable.

• **[NEW]** Enhanced profile features
Change your username and set avatar images. Create a profile that reflects you for a more personalized app experience.

• Goal setting with no penalties
No need to set goals or quotas. Focus on continuing without feeling pressure.

• Free memo function for each day
Add notes freely about work content, insights, daily mood, etc. Makes it easier to look back on daily records.

• Notification function
Timely delivery of useful information including the latest app updates and tips for maintaining habits.

• Cloud storage with member registration
By creating an account, your records are safely stored in the cloud. Easy restoration when changing devices, so you don't have to worry about losing your precious continuation records.

• Multi-language support
In addition to Japanese and English, now supports Chinese and Korean. Available for more users to enjoy.

• **[NEW]** Stable app experience
System improvements provide more stable operation and smooth update management. Use with confidence for the long term.

This is the perfect habit management app for those who want to graduate from "giving up after three days" or want to experience easy continuation.

**Recommended for:**
- Those who want to "continue studies, work, and hobbies without strain"
- Those who want to build habits together with friends in a fun way
- Those who struggle with strict goal management or penalties
- Those who don't want to feel stressed about goals or "what you couldn't do"
- Those who want to maintain motivation by "seeing and feeling" results
- Those who prioritize simplicity and ease of recording
- Those who want to sync records across multiple devices
- Overseas residents or those in multilingual environments
- Those who want to start stress-free with easy login
- Those who want to enjoy the app with a personalized profile

Why not start today by recording your "accomplished days" with your favorite stamps and preserving your efforts on the calendar? With new features that allow fun continuation through sharing with companions, the app has become even more powerful.