Stax by Fattmerchant provides a flexible, scalable, all-in-one payments toolset so that you can move faster, think smarter, and make better decisions.

The Stax Pay mobile app gives you powerful insights on-the-go, enabling you to spot trends, manage cash flow, and improve business performance wherever you happen to be. And, of course, you or your team can accept payments, process refunds, invoice customers, and much more all without having to download a separate app.

With Stax Pay you can:
- Swipe EMV chip cards with our optional bluetooth Stax mobile reader
- Accept Visa, MasterCard, Discover, and American Express
- Accept tips, apply discounts, and issue refunds
- Key-in, swipe, dip, or photo capture card details
- Email receipts to multiple customers and internal staff
- Securely store payment methods for future transactions
- Automatically sync payments and data to the Stax platform
- Receive deposits to your bank account automatically on the next business day
- Manage customers in real-time and send invoices, update contact information, and add new payment methods
- Stay protected from liability with PCI-Compliant tokenization technology for managing credit card information

The Stax Pay mobile app is all you need to run and grow your business, wherever you happen to be. We hope you’ll give it a try!

What’s New

Version 2.2.2

Bug fixes and performance improvements

Ratings and Reviews

4.0 out of 5
4 Ratings

4 Ratings

FM1219 ,

Convenient and Smooth

I was surprised with the app as it allowed just as much access as the website. Able to see all my data with live dashboard, take payments etc. Basically it allows me to run my entire business remotely because of this app . First time I can truly say I’m happy with my credit card company.

emiliamaria ,

BEST credit card processing app!!!

Take payments literally anywhere you need and any way you need with this payments app. The app has tons of data and dashboards too so you can track sales data, trends and a lot more. Even integrates with Quickbooks Online!!

ATN613 ,

Easy to use

Love having the dashboard available wherever I am, and the interface is super easy to use. New Bluetooth readers are great as well!

App Privacy

The developer, Fattmerchant Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Search History
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Financial Info
  • Location
  • Contact Info
  • User Content
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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