Stax Pay vs Zulio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stax Pay
This comprehensive payment processing toolset offers on-the-go business insights, cash flow management, and the ability to accept various payment types. It streamlines operations by allowing users to process refunds, send invoices, and manage customer data securely.
- Accept Visa, MasterCard, Discover, and American Express
- Process refunds and accept tips
- Send invoices and manage customer data
- Securely store payment methods
- Email receipts to multiple recipients
- PCI-Compliant tokenization
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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!
Zulio
Empower your business to accept card payments without incurring additional costs. This app allows you to automatically include credit card fees in your pricing and offer cash discounts. Enjoy no processing fees, simple reporting, and dedicated customer support.
- Accept card payments
- No processing fees
- Auto-calculate fees
- Offer cash discounts
- Send invoices
- Clean reporting
- Personal customer support
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Give customers choice in how they pay without increasing your costs. Accepting card payments using traditional processors with high fees, and complicated PCI requirements can feel unfair. You shouldn't have to pay another “gross income tax” to get paid for the work you do. Auto calculate and include the credit card fee in your regular price and offer discount for paying with cash. No Processing Fees Accept Payments Send Invoices Personal Customer Support No Annual PCI Requirements Clean reporting. Keep 100% of everything that hits your account.
Screenshots
Verdict
The clearest difference is rating: Zulio at 3.8 against Stax Pay's 2.1. Zulio also leads on review sentiment (50% vs 36%) and iOS requirement (15.4 vs 17.6). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Zulio holds the better App Store score, 3.8 against 2.1. Both are backed by a comparable volume of ratings — 27 and 11 respectively. Written reviews point the same way: 36% of Stax Pay's written reviews are positive against 50% of Zulio's.
Stax Pay ships an update monthly, Zulio every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Stax Pay | Zulio |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (27 ratings) | 3.8 (11 ratings) — better |
| Positive reviews | 36.4% of reviews | 50.0% of reviews — better |
| Number of ratings | 27 — better | 11 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 15.4 — better |
| Further details — not scored | ||
| Size | 232 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Fattmerchant Inc. | Provident Payments Central LLC |
Customer experience
Stax Pay
Zulio
In-app purchases
Stax Pay
No in-app purchases
Zulio
No in-app purchases







