Calmon
Arrange Mac windows in scrolling columns. Split a column top to bottom, stack windows from the same app, and switch with the mouse or keyboard.
Tools, apps and games for macOS, iOS and iPadOS
Arrange Mac windows in scrolling columns. Split a column top to bottom, stack windows from the same app, and switch with the mouse or keyboard.

Automatically dim your screen when you step away. Enable “Keep Computer Awake” so display sleep and screen savers don’t interrupt AI computer use.
A sheep-counting game for iPhone and iPad. Jump over fences, duck under bats and try a new course each night. Download on the App Store or try the web demo.
Learn languages from natural rewrites or translations of your input in Claude Code, Codex and other AI tools. Yilo adds notes when useful. Formerly YiYan.
Codex · Your input · No big rewrite yet; leave room to adjust.
Languages you want to learn
Simplified Chinese: 先别大改,留点余地。 xiān bié dà gǎi, liú diǎn yú dì.
Japanese: 大幅な書き直しは控え、調整の余地を残して。 oohaba na kakinaoshi ha hikae chousei no yochi wo nokoshi te
留点余地。 Learn natural phrasing. Speak more naturally with others.
Download videos from X in Safari on your Mac. Save the highest-quality available MP4 directly to your Downloads folder.
Read EPUB ebooks, CHM documents and MHT files on iPhone and iPad. Search across chapters, highlight passages and add notes.
Look up country profiles, flags and rankings, and explore a 3D globe offline. Download photos and regional maps to view them offline too.
iPhone · iPad
Read your Fanfou timeline, mentions and direct messages on iPhone and iPad. View favorites and photos.
Install your TTF, OTF and TTC font files on iPhone and iPad. Use them in apps that support the iOS font library, including Pages and Keynote.