A month on from the launch of Locket, the advertising app that borrows your lockscreen in exchange for ad engagement, the company has taken to the app to ask its now 100,000 users what brands they want to see.

The My Ads campaign had a CTR of 36.2 per cent – although not a typical mobile marketing effort, that blows 0.7 per cent out of the water – with thousands of email votes gathered in the first 20 minutes. 

After tempting 25,000 users in just two days, with trial partners including Sears, Hershey’s is the next Fortune 500 company lining up to launch a campaign, Locket said. It is now delivering more than 5m full-screen, print-quality ads on Android devices too.

And as if all that wasn’t enough for a brand new startup, the company has also launched Locket Cares, giving its users an opportunity to donate the money they earn from the app –  up to $10 per month – to local causes. The charity launch partner is Free Arts for Abused Children in LA and the company will be hosting artwork from the charity’s users within its ad rotation.