Score 9.5/10Paid from: Per-transaction fees (pay as you go)Free tier: yes (no monthly fee)Last verified 2026-10-13
Why ranked: Its own site says: “Stripe is a financial services platform that helps all types of businesses accept payments, build flexible billing models, and manage money movement.” We placed it 1st of 5 on fit for this task. Free tier; paid from Per-transaction fees (pay as you go).
Why ranked: Its own site says: “Run payments, manage your data, and offer financial products in one platform.” We placed it 2nd of 5 on fit for this task. No free plan confirmed; paid from Transaction fees (e.g. $0.13 + payment method fee).
Score 6.7/10Paid from: Free plan; Square Plus $49/mo per locationFree tier: yesLast verified 2026-10-13
Why ranked: Square: POS and payments for small business. We placed it 5th of 5 on fit for this task. Free tier; paid from Free plan; Square Plus $49/mo per location.
Why ranked: Its own site says: “Boost your acceptance rate, cut processing costs, fight fraud, and create extraordinary customer experiences with Checkout.com's payment solutions.” We placed it 3rd of 5 on fit for this task. No public price (sales-led).
Why ranked: Its own site says: “From paying friends to saving money or getting cash back when you shop, explore what the new PayPal app has to offer.” We placed it 4th of 5 on fit for this task. No free plan confirmed; paid from Transaction fees (no monthly plan).