A report from Dapp.com said dApps had about 1.5 million users over the course of 2018. The most active dApp category across platforms was gaming, followed by betting. Out of the 1.5 million total users of dApps across platforms, nearly 800,000 were on Ethereum. The Ethereum dApp ecosystem is:
Those who accounted for the most users of dApps are Decentralized exchanges. Crypto trading is the first major killer use case for decentralized applications. But the volume transacted on decentralized exchanges is still shortened by volume at centralized exchanges.
Although Ethereum has the most users and widest variety of dApps, actual usage of Ethereum programs was less in terms of transactions than other platforms.
According to the dApp.com report:
TRON is the most ambitious in the dapp field, with a $2 billion Project Genesis launched in the second half of the year. In addition, it spends $100 million on TronArcade to promote its dapp ecosystem.