1. CoinMarketCap - CoinMarketCap is a popular cryptocurrency app that provides real-time information on over 2,000 cryptocurrencies. It allows users to track prices, market capitalization, volume, and other key data points.

2. CoinGecko - CoinGecko is another widely used cryptocurrency app that offers comprehensive data on cryptocurrencies, including price charts, market capitalization, trading volume, and more. It also provides analysis and insights on the crypto market.

3. Binance - Binance is one of the largest cryptocurrency exchanges in the world, and its app allows users to trade a wide range of cryptocurrencies. It offers advanced trading features, as well as access to a variety of trading pairs.

4. Coinbase - Coinbase is a popular cryptocurrency exchange that allows users to buy, sell, and store a variety of cryptocurrencies. Its app provides an easy-to-use interface for trading and managing crypto assets.

5. Crypto.com - Crypto.com is a cryptocurrency platform that offers a range of services, including a crypto wallet, exchange, and payment solutions. Its app allows users to buy, sell, and store cryptocurrencies, as well as earn rewards through staking and other activities.

Overall, these are some of the top cryptocurrency apps that are frequently downloaded in Islamabad, Pakistan. Users in the region rely on these apps to stay informed about the latest developments in the crypto market and to manage their cryptocurrency investments effectively.