ZenLedger.io appears to be a legitimate platform based on user reviews and industry evaluations. The platform is known for its crypto tax software that simplifies tracking transactions, calculating gains and losses, and generating tax reports for crypto investors and CPAs. Users have reported positive experiences with its ease of use, customer service, and overall functionality. However, some users have encountered issues with specific integrations and performance, such as difficulties with certain wallets and exchanges. Despite these challenges, ZenLedger remains a popular choice for many cryptocurrency investors.