Annual fee
$0
Rewards rate
None
Monthly fee
None
Funding
USDc · EURc
Bottom line
ARQ, formerly DolarApp, is a digital dollar and euro account for Latin America with an international Mastercard attached. Conversions run at the interbank rate with no hidden margin, balances earn up to 4.5% a year, and the card comes physical or virtual. The catch: ARQ advertises cashback without publishing the rate, and the card's fee schedule is not public either.
ARQ's pitch is the exchange rate, not the card. For someone in Brazil or Argentina paid in dollars, converting at interbank instead of a bank's spread is worth more than any cashback percentage. That said, a card sold on unparalleled cashback with no published rate is hard to compare honestly.
ARQ was DolarApp until its 2026 rebrand; accounts and balances carried over. It operates in Mexico, Brazil, Argentina and Colombia, holding balances in USDc and EURc, which are virtual assets rather than fiat currency. In Brazil, virtual asset services come from D.A. Prestadora de Servicos de Ativos Virtuais, local payments from Atlas Brasil Instituicao de Pagamento, and card services from Pier 5 S.A. de C.V. You top up by Pix, CLABE, CVU or PSE depending on country, and can receive US payments by ACH and wire.
ARQ advertises cashback on card purchases but publishes no rate on its website, app store listing or product pages, so this entry carries none. Separately, ARQ offers earnings accounts paying up to 4.5% a year on balances, alongside stocks and ETFs. Conversions between local currency, digital dollars and digital euros use the interbank rate with no stated margin. A Prestige credit card tier exists with additional benefits, also unpriced publicly.

