In the Italian city of Genoa, the ranking of cryptocurrency app downloads can vary depending on the popularity and usability of each app among the residents. As of now, some of the most popular cryptocurrency apps in Genoa are:

1. Coinbase: Coinbase is one of the most widely used cryptocurrency exchange platforms in the world. It allows users to buy, sell, and store various cryptocurrencies such as Bitcoin, Ethereum, and Litecoin. Coinbase's user-friendly interface and security features make it a top choice for many Genoa residents.

2. Binance: Binance is another popular cryptocurrency exchange that offers a wide range of trading options and features. It is known for its low fees and high liquidity, making it a preferred choice for experienced traders in Genoa.

3. Crypto.com: Crypto.com is a comprehensive cryptocurrency platform that offers a variety of services, including a crypto wallet, trading platform, and crypto debit card. Its user-friendly interface and wide range of supported cryptocurrencies make it a popular choice among Genoa residents.

4. Kraken: Kraken is a well-established cryptocurrency exchange that offers a secure and reliable trading platform for buying and selling cryptocurrencies. It is known for its advanced trading features and high liquidity, making it a preferred choice for professional traders in Genoa.

5. eToro: eToro is a social trading platform that allows users to trade cryptocurrencies, stocks, and other assets. It offers a user-friendly interface and a wide range of trading options, making it a popular choice among both beginner and experienced traders in Genoa.

Overall, the ranking of cryptocurrency app downloads in Genoa may fluctuate based on the preferences and needs of individual users. However, the above-mentioned apps are some of the most widely used and trusted platforms in the city.