How much tire sealant is the right quantity? The new free iCaffélatex app calculates the optimal quantity of Caffélatex (or other type of) sealant needed per wheel, based on tire size, tire construction and intended use. Users simply enter tire diameter, width and a few other basic metrics.

The app also recognizes new tire categories, including 26+, 29+, 650B+ and fat tires. Tire construction options include tubeless, tubeless-ready, tubular and tube-type used as tubeless. Intended use options include mountain, road, and cyclocross.

The app is designed for use with Caffélatex sealant, but they say recommended quantity can be considered a useful indicator for most latex sealants. The app also provides expected Caffélatex lifespan guidelines. To download the app, head over to the iTunes Store.