Omise vs Fattmerchant Comparison
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…
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 leads on user satisfaction with a 5.0-star rating across 1 reviews.
Omise vs Fattmerchant — at a glance
| Feature | Omise | Fattmerchant |
|---|---|---|
| Rating | 5.0 / 5 | 3.9 / 5 |
| Reviews | 1 | 122 |
| Starting price | Contact for pricing | $49 /Month |
| 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 | Business Hours, Online | 24/7 (Live rep), Online |
| Certifications | GDPR | SOC 2, GDPR |
| Data residency | Global | US |
Key differences between Omise and Fattmerchant
- Pricing: Fattmerchant starts at $49 /Month. Omise pricing is not publicly listed.
- User satisfaction: Omise scores higher with a 5.0-star average.
- Deployment: Omise supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS; Fattmerchant supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS.
Omise vs Fattmerchant — 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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Omise vs Fattmerchant: Biggest differences
Start here before you go deeper into features.
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.
Large Enterprises, Medium Business, Small Business
Omise typically suits Large Enterprises and Medium Business. Fattmerchant 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 | 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 | 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 |
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Entry Level Pricing |
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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 Omise and Fattmerchant Compare on Features?
Total Features | 8 Features | 8 Features |
|---|---|---|
Unique Features | No unique features | No unique features |
Get Quote | Get Quote |
Compare Omise and Fattmerchant 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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Omise vs Fattmerchant: 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 |
Omise vs Fattmerchant 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 | 🌐 Global | 🇺🇸 US |
Omise User Reviews & Rating Comparison
User Ratings | ||
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Rating Distribution | ||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Limited reviews but highly positive ratings emphasize reliability and security. What buyers like
Common complaints
| Buyer sentiment Buyer sentiment is mixed to positive across 183 reviews, with clear strengths and a few common watchouts. 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 |  4 Screenshots | No screenshots available. |
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Videos |  3 Videos |  3 Videos |
Top Alternatives to Omise and Fattmerchant 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, Omise or Fattmerchant?
- 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 Omise and Fattmerchant offer a free trial?
- Neither Omise nor Fattmerchant currently lists a free trial.
- What is the starting price of Omise vs Fattmerchant?
- Omise starts at Contact for pricing. Fattmerchant starts at $49 /Month.
- What are the top alternatives to Omise?
- Top alternatives to Omise include WePay, Merchant One, Pin Payments, MagicPay, Przelewy24.
- What are the top alternatives to Fattmerchant?
- Top alternatives to Fattmerchant include Merchant One, Heartland Payment Processing, Shift4 Payments, Global Payments, PaymentSpring.