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Best Payment Processing Software Apps

6+ iOS apps curated and reviewed

4.7 avg rating
6 free apps
Updated September 2026

If you already know Square Point of Sale (POS), this is the deeper bench. 6+ payment processing software apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Payment Processing Software Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Square Point of Sale (POS)Square Point of Sale (POS)Free4.8★ (604K)NoNoSep 2026
2Tap to Pay & Stripe PaymentsTap to Pay & Stripe PaymentsFree5.0★ (53)NoNoSep 2026
3SaleQuickSaleQuickFree4.8★ (32)NoNoSep 2026
4Payzli POS: Next-Gen PaymentsPayzli POS: Next-Gen PaymentsFree5.0★ (3)NoNoJun 2026
5GoSite - #1 Small Business AppGoSite - #1 Small Business AppFree4.0★ (109)YesNoMay 2026
6NorkashNorkashFree was $0.99—NoNoAug 2026

Top Picks for Payment Processing Software

Square Point of Sale (POS)#1

Square Point of Sale (POS) by Block, Inc.

Payments & Business Dashboard
Editor's Choice
💼 Business
4.8😐(604K ratings)
Free
#20in Business
Square Point of Sale (POS) screenshot 1
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This all-in-one payments processing app helps businesses of all types manage operations, accept payments, and boost profits. It offers industry-specific modes for retail, restaurants, services, and beauty businesses, with features like inventory management, online booking, and invoicing.

What We Love

  • 👍 Convenient and easy to use
  • 🚀 Quick transactions and payouts
  • 💡 Useful reporting and inventory management features
  • 👍 Professional and sleek hardware design

Room to Improve

  • 🐛 Connectivity issues with card readers
  • 🔒 Concerns over account deactivation and fund holds
  • 🤖 Poor customer service and lack of live support
  • ⏱️ Slow fund transfers and delays in payouts
Tap to Pay & Stripe Payments#2

Tap to Pay & Stripe Payments by Pale Blue Software Ltd

POS Accept Credit Card Reader
Strong Contender
💼 Business
5.0(53 ratings)
Free
Tap to Pay & Stripe Payments screenshot 1
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Transform your iPhone into a professional payment terminal. Accept cards, Apple Pay, and digital wallets instantly with low transaction fees. Streamline your business operations with features like product libraries, smart tipping, and subscription management.

SaleQuick#3

SaleQuick by Milstead Technologies, LLC

Cloud based payment software
Worth Considering
💰 Finance
4.8(32 ratings)
Free
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This cloud-based payment software streamlines transactions for small and midsize service businesses. It offers point-of-sale, invoicing, and recurring payment features with transparent, flat-rate pricing. Secure and easy to use, it supports all major credit cards and provides electronic signatures.

More Payment Processing Software apps to explore

FAQ about Payment Processing Software

What are the best payment processing software apps for iPhone?
Square Point of Sale (POS) tops our payment processing software apps ranking as of September 2026, with a 4.8-star average from 604K App Store ratings, and it's free to download.
Yes — 6 of the top payment processing software apps we rank are free to download, including Square Point of Sale (POS) and Tap to Pay & Stripe Payments.
Square Point of Sale (POS) has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 6+ payment processing software apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Square Point of Sale is an all-in-one payments processing app designed to help businesses manage operations, accept various payment methods, and improve profitability. It offers tailored features for different industries like retail, restaurants, services, and beauty.
Key features include accepting payments in person, online, or over the phone with major credit cards, debit cards, digital wallets, and more. It also provides industry-specific modes with functionalities like inventory management, online booking, invoicing, and real-time business reports.