there are quite a few hosted commercial Jenkins providers. https://www.shiningpanda-ci.com/ etc.
Over at cisimple our product is specifically focused on CI fo mobile and we take care of all that headache for you. https://www.cisimple.com
Travis-ci definitely has limitations (no windows support, limitation to 15 mins for build time, very difficult to have it installed on a local network), but if it can do what you need it to, it is the best solution I have seen.
We are in the process of adding Windows support, we don't have an ETA just yet, but it is definitely in our sights! Also, the build timeout is 50mins, with a 10 min no-logs timeout.
Thanks,
Josh
Still love it to death, especially for verifying pull requests and branch merges.