Zengo is free to download and free to hold coins in, and sending them out costs the blockchain network fee and nothing more. The fee questions all live behind the buy and sell buttons, and the answer to each is MoonPay. A card, Apple Pay or Google Pay purchase inside Zengo carries MoonPay's 4.5% fee with a minimum of about $3.99; an ACH purchase, where MoonPay offers it, carries about 1%. Zengo shows the fee before you confirm and says plainly that it does not control it. Selling is the same in reverse, at MoonPay's sell rate, with the payout on MoonPay's timeline.
Zengo's own lever on price is the Pro subscription, $19.99 a month or $129.99 a year, which cuts purchase fees by up to 50%. The discount applies only to purchases made through MoonPay inside the app, and only after $129.99 has left your account. In-app swaps are another route: up to about 3% in processing fees plus a market spread, depending on the pair. None of that is hidden, and Zengo's help center is unusually candid about it.
Anytime Capital's card pricing starts from 4% with the spread included on the first dollar with no subscription, and the quote shows the amount you pay and the crypto you receive before you confirm. On a $1,000 card order that is from $40 here against $45 inside Zengo without Pro, and there is nothing to buy first. The coins can be delivered to a Zengo address if that is where you want to hold them.