Highly recommended! We took a long time to review a long list of candidates from 3 continents and we ended up choosing Onix for building our non-trivial iOS app. We're more than happy with our decision. The job required in-depth knowledge of obj-c, Cocoa and iOS 7 platform, animation techniques and usage of plethora of external libraries, APIs and tools. We used simplified SCRUM with daily builds+status meetings - Onix devs were verbose, communicative and supportive during the whole process. We've received exactly what we were looking for, even though requirements were evolving - we've been user-testing daily builds and discovering iOS platform limitations and other quirks. Luckily, Onix devs were always there to modify the app to our changing needs. After the app was ready, Onix team helped us promptly submit it to the Apple App Store. We wouldn't think twice about choosing Onix again and couldn't be happier that we now have an outsourcing partner for all our future iOS needs!