We are working on releasing the Heartbeat code under a license that is free as in freedom and yet allows us to publish and distribute Heartbeat on the App Store. In the meanwhile, we are releasing it, all rights reserved, for review.
To follow the updates, please see the Towards Ind.ie Commons Licenses thread on the Ind.ie forum (https://forum.ind.ie/t/towards-ind-ie-commons-licenses/690).