PROTOCOL - Neeraj Arora and Michael Donohue, who served as WhatsApp's CBO and engineering director, respectively, started HalloApp in late 2019, dubbing it the "first real-relationship network." HalloApp has no ads. It also has no algorithmic feed and doesn't allow group chats with more than 50 people. The app only allows users to connect with users who are stored in their phone's contacts. Every message sent is encrypted. Launched in Nov 2020, the app has been downloaded 225K times across iOS and Android.