A new app named helloyellow has been developed by Jon Simantov to enhance communication among Playdate enthusiasts. It allows users to exchange voice messages, create group chats, and celebrate achievements. The app is available for free on itch.io, with limitations, or as a full version for a modest price. It operates over Wi-Fi, enabling offline message recording, which sends automatically upon reconnection. The full version permits voice messages of up to 10 minutes, while the free version limits messages to two minutes. Users connect with friends using unique hellocodes and can use an integrated emoji library for reactions.