Honestly, one of my reactions about Simple Earn was "Wow, with this feature I can accumulate interest" and after realizing it was when I saw that it is not something so simple 😑, since it absolutely depends on the currency you decide to invest in... I recommend more than anything USDT because it doesn't drop in price like other cryptocurrencies that are circulating... You don't earn much interest but at least you earn something guaranteed, whereas with the other currencies it's a Rise and Fall and honestly, I won't risk losing what I was keeping in my wallet.