There are several apps and websites that are commonly used to track altcoin news and cryptocurrency developments. However, the "best" app can vary depending on personal preferences and features that you prioritize. Here are some of mine Favorite Altcoin news app to track altcoin news.

1. CoinGecko: CoinGecko is a comprehensive cryptocurrency tracking platform that provides information about various altcoins, including their market data, news, and community engagement. They offer a mobile app that allows you to track prices, news, and more.

2. CryptoReach app: CryptoReach is a ultimate crypto & altcoin news app that aggregate crypto news from 20000+ crypto spaces & organizes in coin specific news. it also comes up with coins market cap, sentiment analysis,  Crypto price alerts,  Customization and languages and lot more

3. CoinMarketCap: Similar to CoinGecko, CoinMarketCap is another well-known platform for tracking cryptocurrency prices, market capitalization, and news. They also have a mobile app that provides up-to-date information on altcoins and their news.

Certainly! If you have any more questions or need further assistance, feel free to ask. And before I go, I'm curious: what's your favorite app to track real-time altcoin news?