Calmulus: Cloud Merge

A Calm Number Puzzle

Free · Designed for iPad. Not verified for macOS.

A little breathing room for your day. Calmulus is a gentle puzzle for moments when you want to slow down, clear your head, and do something quietly satisfying. Swipe to bring matching clouds together, let them grow, then choose the right moment to make it rain. As the sky changes, your small garden responds. Flowers wake, colors return, and every thoughtful move helps the scene come alive. There is enough strategy to keep your mind engaged, without timers, pressure, or noise. OPEN. SWIPE. EXHALE. • Settle into a simple rhythm of merging clouds and making rain • Enjoy a calm sense of progress as your garden grows • Find gentle focus during a break, on the train, or at the end of a long day • Play for a minute or stay a little longer—at your own pace A SMALL WORLD TO CARE FOR Discover hand-painted flowers, changing skies, rainbows, butterflies, bees, and drifting leaves. Momo, your little sky companion, helps you learn along the way. QUIET BY DESIGN • No ads • No account or sign-in • No analytics or tracking • No pressure to return • Play offline • Your progress stays on your device Calmulus will not ask you to hurry. It is simply a peaceful place to think, play, and let the rest of the day feel a little farther away.

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Improved how iOS recognizes Calmulus’s supported languages: English, German, French, Spanish, and Japanese.

Version 1.0.1

The developer, Neuber Software, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    A. & M. Neuber Software GmbH
    Size
    59.8 MB
    Category
    Puzzle
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 4 more
    • English, French, German, Japanese, Spanish
    Age Rating
    4+
    Copyright
    © 2026 A. & M. Neuber Software GmbH
  • Developer Website
  • Privacy Policy