Problem
What are two tools (include their security guidelines) for Android and iOS devices based off a few of these characteristics of the tools:
i. Possible use of higher-level APIs provided by the OS
ii. Use of secure storage such as AWS database on less secure OS-versions
iii. Capability to always store highly sensitive information like passwords and certificates in the Keychain/Keystore
iv. Doesn't give flexibility to develop your own encryption technique
v. Use of HTTPS for any sort of client-server communication