CotzCotz:コツコツ続ける習慣アプリ

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Everyone
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Everyone
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About this app

"Continuing consistently" is actually difficult.

It's easy to give up after three days. Even with effort, there's no sense of accomplishment. It can feel lonely when you're alone. —But what if there was an app that was cute, fun, clearly showed progress, and had family and friends cheering you on? That would surely help you continue.

'CotzCotz' is a habit-tracking app that helps you build your own "amusement park" and "you (Cotz)" by stacking small blocks each day.

🧱 You can see the progress. Put what you want to do on a single card. Every day, simply "long-press" to stamp. Days you complete become blocks that stack up, and the more you continue, the rarer your cards become. Because your efforts take "shape," you'll feel a real sense of accomplishment.

🎡 The more you continue, the more your own amusement park grows. Small, consistent efforts build up like a tree → bench → slide → Ferris wheel → castle… creating a "Small-in-One Amusement Park." The reward for your persistence comes back to you in the form of an exciting world.

🤝 You're not alone. Supporting each other, you continue. Connect with "important people" like family, friends, and loved ones, and support each other. You can send each other confirmation stamps and short messages, so just knowing "someone is watching" gives you the strength to keep going for another day.

🐣 Dress up your very own Cotz. Collect and choose colors, faces, heads, hats, glasses… to create your own unique companion. The more attached you become, the more you'll want to open it every day.

🔔 Gentle reminders. "It's almost time for some small steps." A gentle reminder at the scheduled time to motivate you to continue.

🧩 Check without opening with the home screen widget. By placing "Today's Cotz" and "Waiting for Confirmation" on your home screen, you can see at a glance where you left off today and receive "Done!" messages from your supervisor, without even opening the app. It's compatible with both iPhone and Android home screen widgets.

👶 Safe for parents and children. Coin purchases require adult confirmation. The text (hiragana/kanji) changes according to age, making it suitable for young children and adults alike.

Recommended for:

Those who want to overcome procrastination and establish habits

Those who want to visualize daily progress in areas like studying, exercise, bedtime, and chores

Those who want to continue their child's "to-do list" in a fun way with their child

Those who want to encourage each other with friends, family, or their partner

Those who like to see the rewards for their progress


Daily small steps will one day become "treasures." Let's start with CotzCotz today!
Make "consistent effort" cute and fun. A new and fun habit-building app that helps you build your daily habits one block at a time, with family and friends supporting and encouraging you to keep going.
Updated on
Aug 23, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, Personal info and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted
  • Committed to follow the Play Families Policy

What’s new

「CotzCotz(コツコツ)」をご利用いただきありがとうございます!今回のアップデート内容は以下の通りです。
・パスワード再設定やメール確認が、Webを経由せずアプリ内で直接完了するようになりました
・文字サイズの拡大によるレイアウトの崩れを防ぐよう調整しました
・オンボーディング(初期設定)の流れと初期値を改善しました
・ミッションの達成判定やホーム画面ウィジェットの表示を修正しました
・その他、軽微な不具合修正と安定性の向上を行いました
Content rating
Everyone
In-App Purchases
Learn more

App support

About the developer
RHYTHMAP
admin@rhythmap.net
2-54-3-501, SANGENJAYA SETAGAYA-KU, 東京都 154-0024 Japan
+81 3-3795-5270