It does the job It's good for getting an idea about what other climbers are talking about when they use a different system. It doesn't however show the curve on which grades actually relate to each other. The wheel system of the iOS app is much clearer in thus regard.
Good but some conversions make little or no sense, in particular the conversion of the brit adj. scale into any technical scale - they provide different, loosely related information: one informs on safety, all others on difficulty.
Needs upgrading to be excellent Very useful for quick, rough comparisons. I use it when instructing, to help explain different systems used in indoor walls. Like any other tool it's down to the user to interpret it intelligently. However, it needs lists of countries using a particular common grading system. For example, what grades are used in Canada? Other instructors I have shown it to thought it was a great concept.
Excellent This is a great app! I are can never remember how grades relate to each other. Now I don't have to. I use it to convert between grades I use -- YDS and Hueco -- to understand what I can climb. It also is good when reading magazines or watching movies.
Great app Misssing the option to add to the grade section. For example if I select the French system in the info section it explains what countrys use this system. I would like to add Switzerland to that info page as Switzerland uses the French grading system. It would also be nice to select between climbing and bouldering as a French 7 climbing would be a French 5 bouldering .
Helpfull This comes on handy when people insist on rating local boulders with UK tech grades instead of V grades
- font traverse grade added
- bouldering grades conversion fixed