Okay, let’s calculate this. Dan has a mix of skills in mobile app development, software design, and operating systems. He’s located in Issaquah, Washington, which is a tech hub. Considering his skills, especially in iOS development, and his experience with Agile methodologies, I’d estimate his hourly rate to be around $125. This is slightly lower than average for an iOS developer in the US, but his skills in software design and operating systems bring his rate down. A rough estimate for an iOS developer in the US could be $150–$250 per hour, but Dan’s experience and skillset put him in the lower to middle range.