The OrderPort Point of Sale applications on Apple devices require iOS (or iPadOS) version 15 or better. We also support the latest iOS and iPadOS versions.
However, whenever a new major release comes out, we recommend you do not immediately update without confirmation with OrderPort. Apple may make changes which negatively alter your experience.
iOS 15 was released in 2021. For a list of iOS 15 compatible devices, please see this document from Apple: https://support.apple.com/en-us/103201.
Please note: This document has not been updated with the latest device releases. If you have a newer model than what is listed (eg. iPad 11th gen.), there won't be any issues regarding iOS versions.