Based on Keith's skills and experience, I estimate his hourly rate to be around $125. This is lower than the national average for software developers in the US, which is around $150-$200 per hour, due to his location in Seattle, Washington. However, considering his expertise in Objective C and iOS development, as well as business analysis, his rate is still competitive. This rate is also influenced by the fact that he has a degree from Texas Christian University, which may not be directly relevant to his current role, but still adds to his credibility.