I've been using HodlBot for a few months now and it's made passive crypto investing genuinely simple. You connect it to your exchange, set up a strategy (I use a simple market index approach), and it automatically rebalances your portfolio without any manual intervention. The setup took about five minutes and I haven't touched it since. It's free for the first week and then costs as little as $3 a month depending on your portfolio size. What I like most is that you keep your funds on your exchange and only give the bot trading permissions, so it feels secure. If you're tired of trying to time the market or manually rebalancing, take a look at https://hodlbot.io/. I've been really impressed with how well it works. It has saved me hours of stress and I've actually seen better returns. Definitely worth trying the free trial.