This week Aetna added two more mobile health app developers as partners. One is now a part of its CarePass Sync Platform, which is where it has nestled iTriage -- the startup it acquired last year -- as it continues to build up its ACO strategy. MapMyFitness, a fitness app developer that has a number of apps and more than 9 million users, now integrates with CarePass. Meanwhile, GoodRx -- a cost...