
Challenge Log - チャレンジログ -
Stamp your small daily wins.
0 ratings
Free
About
Small wins, every day.
Challenge Log is a gentle stamp-based app for recording your daily study, work, and habits. With this major rebrand, both the look and the feel have been reborn.
[Key Features]
New Type x 3-Grade Stamps: Combine 6 types (Face, Hand, Aco, Hanamaru, Star, Flower) with 3 grades (Great, Good, A Little). You'll always find the right stamp for the day.
Warm & Cool Themes: Switch between the warm-toned "Warm" and cool-toned "Cool" palettes to match your mood or the season.
Simpler 3-Tab Home: Home / Timer / My Page — a cleaner flow. Tap any date on the calendar to open the record sheet directly.
Inline Monthly Summary: Stamp and timer breakdowns are always visible on the Home screen.
Easy Login: Quick sign-in with Google or Apple. No tedious registration required.
Record Without Sign-In: Save records locally without an account. Link to an account later to sync to the cloud.
Larger Calendar Stamps: Each day's stamp is displayed larger, so your month's progress is easy to see at a glance.
Timer Function: Set a time and focus. The screen stays on while running, with a reset confirmation dialog for peace of mind.
Reminder Notifications: Set daily, weekly, monthly, or custom-interval reminders. Manage them all in the Notifications tab.
Calendar Sharing: Share challenges with friends and cheer each other on.
Rename Your Stamps: Customize stamp-type names to make them your own.
Reorder Your Stamps: Rearrange stamp types from Settings and put your favorites right up front.
Profile Setup: Set a username and avatar to personalize your experience.
No Goals, No Penalties: No quotas, no deadlines. Focus on just showing up.
Daily Memos: Freely jot down notes, insights, or how you feel.
App Notices: Timely updates on app news and consistency tips.
Cloud Backup: Sign up to save records securely in the cloud. Migration between devices is easy.
Multi-language: Japanese, English, Chinese, and Korean supported.
[Recommended if you...]
- Want to quit being a "quitter"
- Want a gentle-looking app you'll actually want to open
- Want to build habits with friends
- Dislike strict goal management or penalties
- Want to try the app first without signing in
- Want a theme you can switch by mood
Start today — capture your "I did it" days with your favorite stamps.
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What's New in Challenge Log
2.0.2
July 25, 2026
New • Reorder stamp types on the record sheet. Go to Settings > Records > Reorder Stamps and drag your stamp types into any order you like — put your most-used type first for an even smoother daily record. Improved • Brand-new app icon and splash screen. Enjoy a cheerful new stamp-mark icon paired with a soft, sky-inspired color palette.
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