There are many great unit converters in App Store, in fact there are so many that I suppose it has became a new “Hello World app” for iOS developers, everyone has unit converter app in portfolio. I wasn’t going to join this club, but one evening, my girlfriend was reading a Climbing Magazine and complained that she can’t understand Yosemite/US grades, because everyone in Europe uses French standards. “Why not to write one?!” — I thought, here is the result.

Grade Rock app, a simple rock climbing grade converter for iPhone, FREE on App Store

Support 9 international lead climbing grading units:

• Yosemite (USA)
• British
• French
• UIAA
• Saxon
• Ewbank (Australia, New Zealand & South Africa)
• Finnish
• Norwegian
• Brazilian

Any ideas, improvements and critics are welcome at @totocaster.

Bouldering rates and a lot more coming very soon as a free update.

For my beloved girlfriend