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Blue Comet Labs is a software development company based in Osaka, Japan. We specialize in developing iOS & macOS applications that deliver unique value, experiences, and delight to people around the world. If you have any questions, feel free to contact us.

GitHub | X | Mastodon | Bluesky

We’re currently working on the following apps:


Expenses

iPhone Mac Apple Vision

Track your spending effortlessly with a simple, intuitive interface.

Released on May 14, 2020


8Planets

iPhone Apple Watch Mac

View and simulate planetary orbits in our Solar System.

Released on March 22, 2021


Rerere

iPhone Mac

Process-oriented checklists to ensure you don't forget anything.

Released on May 14, 2022


PasswordGen

iPhone Mac

Create strong passwords quickly and easily.

Released on December 11, 2021


OnDrip

iPhone Apple Watch

Calculate IV drip rates and adjust via vibration.

Released on May 2, 2024


Rokuyo

Mac

Menu bar app for today's Rokuyo (六曜).

Released on October 14, 2021