After two years of development, Hey was only accessible via an invite-only preview for a $90 yearly subscription fee, later it had to be updated to comply with App Store guidelines. Apple had blocked all future updates for the app because it violated its policies since the subscription for the app could only be done via the Basecamp website. According to Apple, it is mandatory for the company to allow users to register directly from the app, this would also iPhone maker to get a 30 percent cut of the subscription fee.
However, Apple did allow some time to Hey to release a version of its app that would adhere to App Store's Terms and Conditions and now the new version is up and live for users to access. Apple also altered its developer rules at WWDC 2020 to allow developers to appeal against App Store guidelines and also clarified that it will not postpone app updates with fixes due to guideline violations.
If you're interested, you can download the app from the App Store or Google Play Store and enjoy a 14-day free trial period.
