Flatpay vs Synder

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Synder Payment Processing Software logo

Synder

4.7

( 199 )

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At a Glance
Flatpay Payment Processing Software logo
Flatpay
Starting at:
$/month
Synder Payment Processing Software logo
Synder
Starting at:
$13.00/month
Overview
Flatpay Payment Processing Software logo
Flatpay
Flatpay is a fintech payments platform for small and medium-sized merchants offering card terminals, flat-rate transaction processing, POS systems (inventory, tables, saved orders), mobile POS, online payments, and pay-by-link. It emphasizes transparent, flat per-transaction pricing (no monthly s... Learn more
Capabilities
  • AI Enabled
  • API Available
  • Open Source
  • CLI Available
Synder Payment Processing Software logo
Synder
Synder is powerful automation software that enables easy accounting for e-commerce businesses. Automate reconciliation of sales from e-commerce systems with accounting for always accurate reporting. Learn more
Capabilities
  • AI Enabled
  • API Available
  • Open Source
  • CLI Available
Images
Synder
View 5 images
Synder Screenshots
Synder screenshot 1
Synder screenshot 2
Synder screenshot 3
Synder screenshot 4
Synder screenshot 5
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Pricing
Flatpay Payment Processing Software logo
Flatpay
Free trial available
Free plan available
Billing type Usage Based
POS Pro (below £200,000 turnover)
Contact Us
POS Pro (above £200,000 turnover)
Contact Us
POS Premium (below £200,000 turnover)
Contact Us
POS Premium (above £200,000 turnover)
Contact Us
Online Payments (EU / Danish cards)
Contact Us
Online Payments (non-EU / international cards)
Contact Us
Pay-by-Link (below £200,000 turnover)
Contact Us
Pay-by-Link (above £200,000 turnover)
Contact Us
Onboarding & Installation — mPOS (example)
Contact Us
Onboarding & Installation — POS Pro (example)
Contact Us
Onboarding & Installation — POS Premium (example)
Contact Us
3D Secure activation (example)
Contact Us
MobilePay add-on (region-specific)
Contact Us
Payment Terminal (below £200,000 annual card turnover)
Contact Us
Payment Terminal (above £200,000 annual card turnover)
Contact Us
Mobile POS (mPOS) — below £200,000 turnover
Contact Us
Mobile POS (mPOS) — above £200,000 turnover
Contact Us
See all pricing
Synder Payment Processing Software logo
Synder
Free trial available
Free plan available
Billing type Recurring Subscription
Starter
$13.00
/ month
Small
$28.00
/ month
Medium
$55.00
/ month
Large
$355.00
/ year
Large
$355.00
/ month
See all pricing
Pros and Cons
Flatpay Payment Processing Software logo
Flatpay
Pros
  • Transparent flat per-transaction pricing; many offerings have no monthly subscription.
  • Unified offering: terminals, POS, online payments and pay-by-link.
  • 24/7 support and daily payouts.
  • Supports DCC and surcharge options for international/business cards.
  • Multilingual and multi-market regional presence across several European countries.
Cons
  • No fully public developer API portal or published machine-readable API documentation — integrations rely on Frisbii gateway.
  • Offline transaction capture / disconnected operation not clearly documented.
  • Onboarding and hardware costs for higher-end POS bundles can be significant.
  • Some features (surcharging, MobilePay, 3D Secure) are region-dependent and may incur additional fees.
Synder Payment Processing Software logo
Synder
Pros

Not enough data available.

Cons

Not enough data available.

Reviewer's Segments
Flatpay Payment Processing Software logo
Flatpay
Insufficient data to show segment split
Synder Payment Processing Software logo
Synder
Small Business
96.98%
Mid Market
3.02%
Enterprise
0.0%
Deployment
Flatpay Payment Processing Software logo
Flatpay
  • Cloud based
  • Desktop based
  • Mobile based
  • On-premise
Synder Payment Processing Software logo
Synder
  • Cloud based
  • Desktop based
  • Mobile based
  • On-premise
Support
Flatpay Payment Processing Software logo
Flatpay
  • 24/7 (Live rep)
  • Chat
  • Email/Help Desk
  • FAQs/Forum
  • Knowledge Base
  • Phone Support
Synder Payment Processing Software logo
Synder
  • 24/7 (Live rep)
  • Chat
  • Email/Help Desk
  • FAQs/Forum
  • Knowledge Base
  • Phone Support
Training
Flatpay Payment Processing Software logo
Flatpay
  • Documentation
  • In Person
  • Videos
Synder Payment Processing Software logo
Synder
  • Documentation
  • In Person
  • Videos
Integrations
Flatpay Payment Processing Software logo
Flatpay
Total integrations: 2
  • BigCommerce
  • BlueSnap
  • Ecwid
  • Gusto
  • PayPal Payments Pro
  • Pinterest
  • QuickBooks Online
  • Sage Business Cloud Accounting
  • Shopify
  • Shopify POS
  • Stripe
  • Stripe Terminal
  • Wix
  • WooCommerce
  • Xero
Synder Payment Processing Software logo
Synder
Total integrations: 15
  • BigCommerce
  • BlueSnap
  • Ecwid
  • Gusto
  • PayPal Payments Pro
  • Pinterest
  • QuickBooks Online
  • Sage Business Cloud Accounting
  • Shopify
  • Shopify POS
  • Stripe
  • Stripe Terminal
  • Wix
  • WooCommerce
  • Xero
Top Alternatives
Flatpay Payment Processing Software logo
Flatpay
See all alternatives
Synder Payment Processing Software logo
Synder
See all alternatives
Company Details
Flatpay Payment Processing Software logo
Flatpay
  • By Flatpay
  • Located in Herlev, Capital Region of Denmark
  • Founded in 2022
Synder Payment Processing Software logo
Synder
  • By CloudBusiness Inc.
  • Located in San Francisco, California, USA
  • Founded in 2016