Famatech hasn't yet released Radmin for Mac. This list of alternatives to Radmin for Mac will help you find many similar applications that will provide you with all the functions to access your computer remotely and use it the same way you would with Radmin. All these programs are secure, easy-to-use, and provide you with the tools to control your machine or the partner's computer via Internet.
Feel free to add any alternative to Radmin for Mac that you know of.
Suggest Alternatives
I suppose RealVNC can be a good solution when dealing with remote access control. It's available both for desktop and mobile platforms. And it's rather cheap.