Flatpay vs SumUp
Flatpay vs SumUp, compared side by side on 15 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Flatpay is on 30/100 and SumUp on 75/100.
Where each one leads
Flatpay
- agent readiness: 53/100 against 32/100
SumUp
- our overall score: 75/100 against 30/100
- domain rating: 90/100 against 67/100
- headcount: 3,953 against 1,362
At a glance
| Measure | Flatpay | SumUp |
|---|---|---|
| What it is | Flatpay provides affordable payment solutions for businesses with a focus on simple, predictable flat rates and daily payouts. | Point-of-sale and payments platform for small merchants across 36 markets. |
| Category | Fintech, Payments, Digital Payments, Embedded Finance | Fintech, Payments, SaaS, E-commerce |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Platform |
| Founded | Not published | 2012 |
| Headquarters | Helsinki, Finland | London, United Kingdom |
| Status | Active | Active |
Size, funding and growth
| Measure | Flatpay | SumUp |
|---|---|---|
| Employees | 1,362 | 3,953 |
| Headcount growthLast 12 months | +103.0% | Not published |
| Total funding | Not published | $60.0M |
| Latest round | Not published | Debt Financing |
| Valuation | Not published | $8.5B |
| LinkedIn followers | 22,023 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Flatpay | SumUp |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 30/100 | 75/100 |
| Traction | 20/100 | 59/100 |
| Team | 30/100 | 70/100 |
| Search visibility | 42/100 | 15/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (53/100) | F (32/100) |
| Domain ratingLink authority, 0-100 | 67/100 | 90/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Flatpay | SumUp |
|---|---|---|
| Hosting | Not detected | Vercel |
| CDN | Cloudflare | Cloudflare |
| CMS | Webflow | Not detected |
| Frameworks | Jquery | Next.js |
What users say
| Measure | Flatpay | SumUp |
|---|---|---|
| Reddit sentimentThreads we track | 1 positive, 4 negative across 5 threads | Not published |
“Jeg har udviklet en løsning, hvor man kan booke og forudbetale en serviceydelse. Det kører via Flatpay/Fribsii. Under checkout vælger man kort, mobilepay etc. Alt er godt.”r/dkudvikler
Flatpay vs SumUp: common questions
Which is better, Flatpay or SumUp?
On our 0-100 score SumUp rates higher (75/100 against 30/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 15 data points above: read the rows that match what you are buying for.
How do Flatpay and SumUp compare on the numbers?
Flatpay leads on agent readiness (53/100 against 32/100). SumUp leads on our overall score (75/100 against 30/100), domain rating (90/100 against 67/100), headcount (3,953 against 1,362).
What do real users say about Flatpay and SumUp?
Flatpay: 1 positive and 4 negative mentions across 5 Reddit threads we track, mostly in r/dkudvikler.
Read the full Flatpay review and pricing or the SumUp review and pricing. You can also browse other Flatpay alternatives we track.

