Simplex was founded in 2014 in Israel by Nimrod Lehavi, Erez Shapira and Netanel Kabala to solve a problem exchanges could not: taking card payments for crypto without drowning in chargebacks. It became the buy-with-card button inside Binance, KuCoin, Ledger Live, Poloniex and hundreds more, and in 2021 the Canadian payments company Nuvei bought it for roughly $250 million. Its EU entity holds an Electronic Money Institution license from the Bank of Lithuania, and it is a principal member of Visa.
Simplex is not a place you go to buy Bitcoin. It is a processor that appears when you tap a partner's buy button, runs the identity check, takes the card payment and delivers the coins to that partner. That shape has consequences for Americans in particular: Simplex's own support center says U.S. customers can pay only with Visa personal debit, business debit and prepaid cards, with Mastercard, Apple Pay and Google Pay unavailable, and that New York, Hawaii and Louisiana are blocked entirely.
Anytime Capital is a U.S. company that serves customers worldwide, with a storefront on Piedmont Road in Atlanta, an office in Miami's One Biscayne Tower, a phone number that reaches a person, and rails that run from Apple Pay and cards to cash and same-day wire. It sells you the coin directly and delivers it to a wallet you control. The Bitcoin is the same; the shape of the company around it is not.