Fattmerchant vs Omise Comparison
Fattmerchant
Starting at $49 /Month
- Large Enterprises
- Medium Business
Fattmerchant, now branded as Stax, is a payment processing platform for small and mid-sized US businesses that charges a flat monthly subscription plus interchange cost rather than a per-transaction markup, which lowers…
Omise
Starting at Contact for pricing
- Large Enterprises
- Medium Business
Omise is a payment gateway platform built for e-commerce businesses and payment service providers in Southeast Asia — primarily Thailand, Japan, and Singapore — that need scalable, PCI-compliant payment infrastructure. I…
Omise leads on user satisfaction with a 5.0-star rating across 1 reviews.
Fattmerchant vs Omise — at a glance
| Feature | Fattmerchant | Omise |
|---|---|---|
| Rating | 3.9 / 5 | 5.0 / 5 |
| Reviews | 122 | 1 |
| Starting price | $49 /Month | Contact for pricing |
| Free trial | No | No |
| Free version | No | No |
| Best for | Large Enterprises, Medium Business, Small Business | Large Enterprises, Medium Business, Small Business |
| Category | Payment Processing Software | Payment Processing Software |
| Platforms | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS |
| API | Available | Available |
| Support modes | 24/7 (Live rep), Online | Business Hours, Online |
| Certifications | SOC 2, GDPR | GDPR |
| Data residency | US | Global |
Key differences between Fattmerchant and Omise
- Pricing: Fattmerchant starts at $49 /Month. Omise pricing is not publicly listed.
- User satisfaction: Omise scores higher with a 5.0-star average.
- Deployment: Fattmerchant supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS; Omise supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS.
Fattmerchant vs Omise — find the better fit before you commit.
Which tool fits your team best
Which is actually cheaper for your team size
Where each product wins, per real buyers
Most Payment Processing Software tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.
Biggest differences
Features
Pricing
Buying details
Security
Buyer feedback
Integrations
Product tour
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Fattmerchant vs Omise: Biggest differences
Start here before you go deeper into features.
Large Enterprises, Medium Business, Small Business
Best for scalable, secure payment processing in medium to large enterprises.
- You need a highly available and scalable payment platform for complex operations.
- Your team includes IT and security experts to manage a technically complex setup.
- Your business requires strong security features tailored specifically for payment processing.
- You are a small business without dedicated IT resources to handle setup and maintenance.
- You prefer an out-of-the-box payment solution with transparent, fixed pricing.
Fattmerchant typically suits Large Enterprises and Medium Business. Omise tends to fit Large Enterprises and Medium Business better. The right choice depends on your team size, workflow, and whether a free trial matters.
Description | Fattmerchant, now branded as Stax, is a payment processing platform for small and mid-sized US businesses that charges a flat monthly subscription plus interchange cost rather than a ... Read More about Fattmerchant | Omise is a payment gateway platform built for e-commerce businesses and payment service providers in Southeast Asia — primarily Thailand, Japan, and Singapore — that need scalable, ... Read More about Omise |
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User RatingsBased on verified Spotsaas reviews | ||
Best Company Size | — | Medium BusinessLarge Enterprises |
Get pricing help | Get pricing help |
Software Demo
Demo |
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How do Fattmerchant and Omise Compare on Features?
Total Features | 8 Features | 8 Features |
|---|---|---|
Unique Features | No unique features | No unique features |
Get Quote | Get Quote |
Compare Fattmerchant and Omise on pricing
Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.
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Fattmerchant vs Omise: Other Details
Organization Types supported |
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Platforms Supported |
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API Support |
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Get help choosing | Get help choosing |
Fattmerchant vs Omise Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
SOC 2 | ✓ Yes | — |
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HIPAA | ✗ No | ✗ No |
GDPR | ✓ Yes | ✓ Yes |
Data Encryption | ✓ Yes | ✓ Yes |
Data Residency | 🇺🇸 US | 🌐 Global |
Fattmerchant User Reviews & Rating Comparison
User Ratings | ||
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Rating Distribution | ||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Buyer sentiment is mixed to positive across 183 reviews, with clear strengths and a few common watchouts. What buyers like
Common complaints
| Buyer sentiment Limited reviews but highly positive ratings emphasize reliability and security. What buyers like
Common complaints
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Pros and Cons |
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Positive Reviews | No reviews available for the product | No reviews available for the product |
| Negative Reviews | No reviews available for the product | No reviews available for the product |
Media and Screenshots
Screenshots | No screenshots available. |  4 Screenshots |
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Videos |  3 Videos |  3 Videos |
Top Alternatives to Fattmerchant and Omise in 2026
Alternatives |
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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
Frequently asked questions
- Which is better, Fattmerchant or Omise?
- Omise edges out the other on user ratings (5.0 vs 3.9). That said, the best pick depends on your use case, so use the comparison tables above to evaluate each dimension.
- Do Fattmerchant and Omise offer a free trial?
- Neither Fattmerchant nor Omise currently lists a free trial.
- What is the starting price of Fattmerchant vs Omise?
- Fattmerchant starts at $49 /Month. Omise starts at Contact for pricing.
- What are the top alternatives to Fattmerchant?
- Top alternatives to Fattmerchant include Merchant One, Heartland Payment Processing, Shift4 Payments, Global Payments, PaymentSpring.
- What are the top alternatives to Omise?
- Top alternatives to Omise include WePay, Merchant One, Pin Payments, MagicPay, Przelewy24.