Bitrise is a CI/CD platform built for mobile teams. The free Hobby plan covers one private app. Starter costs $99 a month ($89 billed annually) with unlimited build minutes, up to 4 concurrent builds and a recommended ceiling of 100 builds a month, on M2 Pro Medium machines with 4 CPUs and 6 GB of RAM. Pro starts at $218 a month ($200 billed annually). Builds on Starter and Pro time out after 210 minutes, and remote build caching is a separate product from $30 a month.
MacRent rents a dedicated Mac Mini M4 or M6 with 10 to 12 CPU cores and 16GB of RAM, and the whole machine is yours. Register it as a self-hosted runner for GitHub Actions, GitLab, Jenkins or Buildkite, keep caches on its disk, and log in over SSH, VNC or RustDesk when you need to debug a build by hand. Rent it for a day to test a pipeline, or by the week or month from $15/day, and order online in minutes.