Our development team is working tirelessly on the iOS app, but unfortunately, it is not currently available. We plan to hire more developers as we grow to accelerate the release of iOS support. 

In the meantime, here is a list of our recommendations for affordable Android options and plans:
T-Mobile Plan
We recommend T-Mobile as the cheapest, most reliable carrier with the most affordable plans.
Samsung Galaxy Express Prime
Up to 27 can be purchased at once
Samsung J3
Up to 30 can be purchased at once
Best Cheap Android Phones 2017
Great options currently on the market for devices.
Cheap Phones 2017
More options currently on the market for affordable devices.
Also, if your iPhone supports mobile hotspots, you can use an Android phone without a plan.

Hope this helps you find a plan and device that can get you using Mystro while we continue to develop the app for iOS devices.
If you would prefer to join our iOS waitlist, submit the information below and we'll keep you updated on our progress.