Hi pele: There is one css trick you can use it.
For Regular Ads, wrap the ads code with regular wrapper div. For example:
<div class="regular-ads">Add in your regular ads script</div>
For Mobile ads, wrap the ads code with the mobile wrapper div. For example:
<div class="mobile-ads">Add in your mobile ads script</div>
Then you can use the “Custom CSS” box in your theme option to show and give the div in various devices:
For example:
/* For Regular */
.mobile-ads { display: none; }
/* For Mobile view */
@media screen and (max-width: 767px) {
.mobile-ads { display: block; }
.regular-ads { display: none; }
}