amaysim is a free-to-use iPhone app developed by amaysim Australia Ltd. It is a one-stop solution for managing your amaysim mobile plan with ease. The app allows you to activate your SIM card, check your balance, update personal and payment details, top up data or credit, switch plans, view your data usage and payment history, and manage your call waiting, voicemail, and roaming settings.

The app is designed to keep things simple and to make managing your amaysim mobile plan incredibly easy. It is perfect for those who want to stay on top of their plan without any hassle. The app is available for download on the App Store, and once your amaysim account is active, you can start using it right away.

It is worth noting that while the app is free to use, download charges apply for downloading from the App Store, and international roaming charges apply when using the app overseas. The amaysim app is constantly improving, and the developers welcome feedback and suggestions from users.