Best Mobile Credit Card Processing Software

Helcim is a Canadian payment processing company that provides credit card, debit, and ACH acceptance for in-person, online, and mobile businesses. It uses interchange-plus pricing, meaning merchants pay the wholesale card network rate plus a small transparent markup that automatically decreases as processing volume grows, with no monthly fees, contracts, or PCI compliance fees.

The platform bundles a free point of sale app, online invoicing, recurring billing, a virtual terminal, and payment links at no extra software cost. Helcim also sells its own card readers and smart terminals and supports ACH/EFT payments in the US and Canada. It is aimed mainly at small and medium sized businesses that want predictable, low processing costs without long term commitments.

Stripe is a payment processing platform that lets businesses accept credit cards, debit cards, and dozens of other payment methods online, in person, and across borders through a single API. It is used by companies ranging from small online stores to large public companies, combining a checkout and billing product suite with tools for fraud prevention, tax calculation, and marketplace payouts.

Beyond core payments, Stripe offers Connect for platforms and marketplaces, Radar for machine learning fraud detection, Terminal for in-person card readers, and Billing for subscription management. Pricing is pay as you go with no monthly fee for standard accounts, and large businesses can negotiate custom volume-based rates.

PayPal is a widely used online payment platform that lets individuals and businesses send and receive money, accept card payments, and manage checkout on websites and mobile apps. A PayPal Business account is free to open with no monthly fee, and merchants pay a percentage plus a fixed fee per transaction depending on how the payment is taken.

PayPal Business supports invoicing, buy-now buttons, subscription billing, Pay Later options for customers, and in-person payments through its Zettle card readers. It also provides seller protection against certain chargebacks and disputes, multi-currency support for international sales, and integrations with major ecommerce platforms such as Shopify and WooCommerce.

Square is an all-in-one point-of-sale and payments platform built for small and mid-sized businesses selling in person and online. It combines free POS software, payment processing hardware, an online store builder, and business management tools such as inventory, staff scheduling, and customer loyalty into one system.

Square offers a free plan alongside paid Plus and Premium subscriptions per location that add features such as advanced reporting and 24/7 phone support, plus custom Square Pro pricing for larger merchants. Processing rates vary by plan and payment type, with lower in-person rates than online or manually keyed transactions, and Square also sells its own card readers, terminals, and registers.

Shopify is a leading cloud-based e-commerce platform that allows businesses of all sizes to create and manage their online stores. It provides an easy-to-use interface, powerful tools, and a wide range of features to help merchants sell their products and services online. With Shopify, businesses can customize their storefronts, manage inventory, process payments, track orders, and analyze sales data, all from a single platform. Additionally, Shopify offers a vast app store with thousands of integrations and add-ons to extend the functionality of their stores. Whether you're a small startup or a large enterprise, Shopify empowers entrepreneurs to build and grow their online businesses with ease. Read Shopify Reviews