Yes! We have mobile apps that enable you to access and use WHMCS from your iPhone, Android and Windows phone. Each app is priced at $2.99 per month. They will give you full access to the admin area of your WHMCS installation.
For more information about each platform including how to order them, please review the following links:
- iPhone - http://iwhmcs.com
- Android - http://awhmcs.com
- Windows - http://blog.whmcs.com/?t=108515