Best Transaction Processing Apps

209+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated June 2026

With an average user rating of 4.2โ˜…, the transaction processing category is one of the App Store's strongest. Browse all 209+ apps we track, sorted so the most loved ones surface first.

Compare top Transaction Processing Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Square Point of Sale (POS)Square Point of Sale (POS)Free4.8โ˜… (604K)NoNoSep 2026
2Jim: sell & get paid instantlyJim: sell & get paid instantlyFree4.8โ˜… (13K)YesNoSep 2026
3iProcessiProcessFree3.0โ˜… (29)NoNoAug 2026
4PayJunctionPayJunctionFree4.5โ˜… (8)NoNoMay 2026
5Credit Card Machine - AcceptCredit Card Machine - AcceptFree3.7โ˜… (21)NoNoMay 2026
6PhoneSwipe - Merchant ServicesPhoneSwipe - Merchant ServicesFree3.9โ˜… (16)NoNoJul 2026
7Square - Dashboard for POSSquare - Dashboard for POSFree4.8โ˜… (3.2K)NoNoSep 2026
8PEX: Simplify your spendingPEX: Simplify your spendingFree4.8โ˜… (3.8K)NoNoSep 2026

Top Picks for Transaction Processing

Square Point of Sale (POS)#1

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

Payments & Business Dashboard
Editor's Choice
๐Ÿ’ผ Business
4.8๐Ÿ˜(604K ratings)
Free
#18in Business
Square Point of Sale (POS) screenshot 1
Square Point of Sale (POS) screenshot 2
Square Point of Sale (POS) screenshot 3
Square Point of Sale (POS) screenshot 4
Square Point of Sale (POS) screenshot 5
Square Point of Sale (POS) screenshot 6

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

  • ๐Ÿ‘ Convenient and easy to use
  • ๐Ÿš€ Quick transactions and payouts
  • ๐Ÿ’ก Useful reporting and inventory management features
  • ๐Ÿ‘ Professional and sleek hardware design

Room to Improve

  • ๐Ÿ› Connectivity issues with card readers
  • ๐Ÿ”’ Concerns over account deactivation and fund holds
  • ๐Ÿค– Poor customer service and lack of live support
  • โฑ๏ธ Slow fund transfers and delays in payouts
Jim: sell & get paid instantly#2

Jim: sell & get paid instantly by CloudWalk, Inc.

Tap to Pay & Payment Links
Strong Contender
๐Ÿ’ฐ Finance
4.8๐Ÿ˜ž(13K ratings)
FreeAds
Jim: sell & get paid instantly screenshot 1
Jim: sell & get paid instantly screenshot 2
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Jim: sell & get paid instantly screenshot 5
Jim: sell & get paid instantly screenshot 6

Accept contactless payments directly on your iPhone without extra hardware. Get paid instantly and access funds immediately with a prepaid card. Utilize AI-driven insights to grow your business.

What We Love

  • ๐Ÿฆ„ Unicorn features
  • ๐Ÿ’ณ Seamless Apple Pay integration
  • ๐Ÿ’ธ Great rates for freelancing

Room to Improve

  • ๐Ÿšซ Terminated accounts without reason
  • ๐Ÿค– Limited functionality beyond talking to a robot
  • ๐Ÿ’ฐ No way to withdraw funds after payment
  • ๐Ÿ”’ Suspicious and sketchy app
iProcess#3

iProcess by Gateway Processing Services

Fast, easy payment processing
Worth Considering
๐Ÿ’ผ Business
3.0๐Ÿ˜(29 ratings)
Free
iProcess screenshot 1
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Process credit card transactions securely and easily from your mobile device. This point of sale app supports swiped, keyed, and chip transactions, and offers features like transaction history, refunds, and automated tax application.

What We Love

  • ๐Ÿš€ Lightning quick
  • ๐Ÿ‘ Very intuitive
  • ๐Ÿ‘ Gets the job done
  • ๐Ÿ‘ Easy to use
  • ๐Ÿ‘ Great simple app
  • ๐Ÿ‘ Love it
  • ๐Ÿ‘ Took my business to the next level
  • ๐Ÿ‘ Nice and works great
  • ๐Ÿ‘ Awesome App
  • ๐Ÿ‘ Good and effective
  • ๐Ÿ‘ Great app!
  • ๐Ÿ‘ Easy peasy
  • ๐Ÿ‘ Works good!
  • ๐Ÿ‘ Easy to use
  • ๐Ÿ‘ Functions well
  • ๐Ÿ‘ Great app
  • ๐Ÿ‘ Love this extremely easy app
  • ๐Ÿ‘ Wonderful to navigate
  • ๐Ÿ‘ App layout is very simple
  • ๐Ÿ‘ Signature pad is very responsive
  • ๐Ÿ‘ Easy to use, quick, no problems
  • ๐Ÿ‘ Great app!
  • ๐Ÿ‘ Much better than anything
  • ๐Ÿ‘ Everything as promised
  • ๐Ÿ‘ Great app
  • ๐Ÿ‘ Love that I can be away
  • ๐Ÿ‘ Works very well
  • ๐Ÿ‘ Pleased with the entire system
  • ๐Ÿ‘ Follows the old bromide K.I.S.S.
  • ๐Ÿ‘ Works great now
  • ๐Ÿ‘ Quick and accurate
  • ๐Ÿ‘ Highly recommend it
  • ๐Ÿ‘ Quick and Easy
  • ๐Ÿ‘ Makes life easier!
  • ๐Ÿ‘ Easiest to navigate through
  • ๐Ÿ‘ Highly recommend the IProcess App
  • ๐Ÿ‘ Great App! Great Pricing! Great Service!
  • ๐Ÿ‘ Best and easiest to use
  • ๐Ÿ‘ More then happy with this download!!!
  • ๐Ÿ‘ Great app
  • ๐Ÿ‘ Tip function is great
  • ๐Ÿ‘ Receipt email is great
  • ๐Ÿ‘ Ability to email batch reports
  • ๐Ÿ‘ Living for this app
  • ๐Ÿ‘ Made a total difference
  • ๐Ÿ‘ Perfect for me
  • ๐Ÿ‘ I ๐Ÿ’š I process!
  • ๐Ÿ‘ Simple
  • ๐Ÿ‘ Extremely easy to use!
  • ๐Ÿ‘ Never failed me
  • ๐Ÿ‘ Love it!
  • ๐Ÿ‘ Great when it works...
  • ๐Ÿ‘ So easy
  • ๐Ÿ‘ Quick to get paid!!
  • ๐Ÿ‘ Excellent!
  • ๐Ÿ‘ Makes credit card transactions go smoothly!
  • ๐Ÿ‘ Great app
  • ๐Ÿ‘ Works great!
  • ๐Ÿ‘ Work very well
  • ๐Ÿ‘ I Process Review
  • ๐Ÿ‘ Great once you get all the bugs worked out
  • ๐Ÿ‘ Mobile processing at its best!
  • ๐Ÿ‘ Easy to use
  • ๐Ÿ‘ Love the signature capture
  • ๐Ÿ‘ See where the sale took place
  • ๐Ÿ‘ Works very good
  • ๐Ÿ‘ Excellent virtual terminal
  • ๐Ÿ‘ Transactions a FAST
  • ๐Ÿ‘ Instantly email a receipt

Room to Improve

  • ๐Ÿ› Customer Vault not working correctly with iOS
  • ๐Ÿ› Unable to use customer signature
  • ๐Ÿ› No date or time stamp on receipts
  • ๐Ÿ› Awful connectivity issues
  • ๐Ÿ› Application always fails to connect
  • ๐Ÿ› Error messages with no troubleshooting help
  • ๐Ÿ› App crashes every time a card is swiped
  • ๐Ÿ› Cannot use terminal
  • ๐Ÿ› Terminal ID Missing and Transaction Key Missing
  • ๐Ÿ› App crashes every time a credit card payment is processed
  • ๐Ÿ› Cannot process an entire payment
  • ๐Ÿ› Constant Crashing
  • ๐Ÿ› App crashing any time you complete a transaction
  • ๐Ÿ› Crashes as you try to complete any transaction
  • ๐Ÿ› Deleted and reinstalled, no luck
  • ๐Ÿ› Cannot add tips in the payment process
  • ๐Ÿ› Tip option is way less visible
  • ๐Ÿ› Less intuitive to use
  • ๐Ÿ› Removed the ability to swipe a card directly into the Customer Vault
  • ๐Ÿ› Renders this completely useless
  • ๐Ÿ› Cannot contact the company
  • ๐Ÿ› Canโ€™t find ANY contact info or website
  • ๐Ÿ› New update has a glitch!!
  • ๐Ÿ› Not compatible with swiper
  • ๐Ÿ› Canโ€™t read swipers that are installed through the charge port
  • ๐Ÿ› Major annoying limitation
  • ๐Ÿ› Too time consuming and unnecessary
  • ๐Ÿ› More steps than using Square
  • ๐Ÿ› Slows us down
  • ๐Ÿ› Receipt aspect not ideal
  • ๐Ÿ› Occasionally doesn't finish processing
  • ๐Ÿ› The 1990's wants their app back!
  • ๐Ÿ› Looks terrible
  • ๐Ÿ› Super confusing
  • ๐Ÿ› Tip screen is small and hard to read
  • ๐Ÿ› Have to swipe a credit card multiple times
  • ๐Ÿ› Will not read cards with an extension
  • ๐Ÿ› Reader will not read any cards while using an extension
  • ๐Ÿ› Tip box is so tiny and confusing
  • ๐Ÿ› Clients accidentally press cancel button
  • ๐Ÿ› Needs a better layout
  • ๐Ÿ› Landscape mode does not exist
  • ๐Ÿ› Rotating screen on iPad
  • ๐Ÿ› App would rotate so I can use in landscape position
  • ๐Ÿ› Please enable landscape mode
  • ๐Ÿ› Bad customer service
  • ๐Ÿ› Charge $8 a month + %
  • ๐Ÿ› Stuck with them for 3 years
  • ๐Ÿ› iOS 8 not supported!
  • ๐Ÿ› Dysfunctional
  • ๐Ÿ› Customers are not able to sign
  • ๐Ÿ› Map displays billing address not address where card was charged
  • ๐Ÿ› Black box on the signature receipt
  • ๐Ÿ› No way to contact developer
  • ๐Ÿ› Signature screen turns black when first touched
  • ๐Ÿ› App needs to be updated
  • ๐Ÿ› Signature block turns black
  • ๐Ÿ› Signature pad goes black for signature
  • ๐Ÿ› Doesn't let the signature show
  • ๐Ÿ› Doesn't work with the new 8.0
  • ๐Ÿ› Need to update to work with 8.0
  • ๐Ÿ› If you aren't getting a signature you have to back out
  • ๐Ÿ› Won't take multiple emails
  • ๐Ÿ› Doesn't send a receipt at all
  • ๐Ÿ› Needs some work IMO
  • ๐Ÿ› Horrible iPad screen!
  • ๐Ÿ› Sale screen window is small
  • ๐Ÿ› Defeats the purpose of iPad
  • ๐Ÿ› Customers complain about signature screen being too small
  • ๐Ÿ› Can't find/see the tip button!
  • ๐Ÿ› Email receipt requires re-entry
  • ๐Ÿ› Can't be that hard
  • ๐Ÿ› Rotating screen
  • ๐Ÿ› It's junk!
  • ๐Ÿ› Pales in comparison to other apps
  • ๐Ÿ› Leaves out some very important options
  • ๐Ÿ› Disappointed
  • ๐Ÿ› Card reader crash
  • ๐Ÿ› Magtek reader won't read cards
  • ๐Ÿ› Crashes the app
  • ๐Ÿ› Cannot send email receipts
  • ๐Ÿ› Very frustrating!
  • ๐Ÿ› Bugs need to be worked out

More Transaction Processing apps to explore

FAQ about Transaction Processing

What are the best transaction processing apps for iPhone?
Square Point of Sale (POS) tops our transaction processing apps ranking as of June 2026, with a 4.8-star average from 604K App Store ratings, and it's free to download.
Yes โ€” 20 of the top transaction processing apps we rank are free to download, including Square Point of Sale (POS) and Jim: sell & get paid instantly.
Square Point of Sale (POS) has no ads and has no in-app purchases, according to its App Store listing as of June 2026.
We track 209+ transaction processing apps on the iOS App Store as of June 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.