The digital realm is undergoing a transformation, with the Metaverse at the forefront. As we delve deeper into this virtual universe, it's essential to understand the most popular Metaverse apps and their functionalities.

1. Popular Metaverse Apps:

• Upland: A virtual land metaverse based on Web3 technology. Upland has evolved beyond buying and selling Web3 properties in a virtual version of the real world. It's now termed a "Metaverse Super App" and boasts over 3 million registered accounts on the EOS blockchain. Source
• The Sandbox: A promising metaverse built on the Ethereum blockchain, focusing on user-generated content. Inspired by Minecraft and Roblox, it uses a 3D voxel system, allowing users to create worlds and objects. Source
• Decentraland: Another Ethereum-based metaverse, where users can create digital objects, shop, attend events, and even establish businesses. Source

2. Google Cardboard: Google Cardboard was a simple VR solution that democratized virtual reality. It was a foldable cardboard viewer that transformed smartphones into VR headsets. While basic, it was compatible with a variety of VR videos and apps, making VR accessible to many.

3. AI and Cryptocurrency: AI is revolutionizing industries, from healthcare to finance. In the digital realm, AI can enhance user experiences, create personalized content, and even manage vast virtual worlds. Cryptocurrencies, on the other hand, are becoming the backbone of the digital economy, especially within the Metaverse. They facilitate transactions, from buying virtual land to trading digital assets.

4. iHeart Radio Metaverse Project: iHeartLand, associated with iHeart Radio, has ventured into the Metaverse, offering exclusive shows. For instance, JVKE's performance in iHeartLand allowed fans to experience his music in a unique virtual setting. Source

5. Protests in the Metaverse: The Metaverse isn't just for entertainment; it's also a platform for social movements. A notable example is a protest that started in a Metaverse Starbucks, highlighting the potential of these virtual worlds as spaces for activism and change.

Conclusion: The convergence of the Metaverse, AI, and cryptocurrency represents a new era of digital interaction. As these technologies continue to evolve and intertwine, they will redefine our understanding of virtual spaces, commerce, and social interaction. The future is digital, and these technologies are paving the way.