Many apps can be PWAs, these can be installed without any approvals. It is used even for some quite demanding apps like low-latency game streaming by Nvidia Ge

Many apps can be PWAs, these can be installed without any approvals. It is used even for some quite demanding apps like low-latency game streaming by Nvidia GeForce Now, Xbox Cloud Gaming, Amazon Luna, etc. They don't use native apps because Apple rules are ridiculous.