LeanMarket offers a platform that can be used for ad optimization. Clients can develop custom, targeted ads using LeanMarket. App developers can buy mobile ads via real-time bidding and exchanges.

Leanmarket is a self-service company and unlike most similar Mobile DSPs, LeanMarket has no minimum spend for buying, they usually trade on a CPM basis with targeting based on geological locations and carrier service.

The platform has been recently funded by Y Combinator and has been functioning as a mobile DSP service ever since. Its main market consists of the USA and is compatible with both Android and iOS.

Website: http://www.lean.com/