Head-to-head · Point-of-Sale Software
SumUp POS vs uniCenta oPOS
SumUp POS leads on 0 checks, uniCenta oPOS on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreSumUp POS · 6.8/10
- Free planboth
- Most featuresSumUp POS · 5 of 5
SumUp POS scores higher on our rubric for point-of-sale software: 6.8 against 4.2 out of 10; our editors rank them #28 and #57.
On hardware support, SumUp POS gives you Both where uniCenta oPOS offers Third_party.
SumUp POS is the better fit for small businesses wanting free POS with upgrades. uniCenta oPOS is the better fit for open-source users needing broad POS features.
- SumUp POS fits best
Small businesses wanting free POS with upgrades
- uniCenta oPOS fits best
Open-source users needing broad POS features
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Side by side
| Feature | SumUp POS 6.8/10 Visit ↗ | uniCenta oPOS 4.2/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 6.8 | 4.2 |
| Ranking | #28 in Point-of-Sale Software | #57 in Point-of-Sale Software |
| Best for | Small businesses wanting free POS with upgrades | Open-source users needing broad POS features |
| Pricing model | Free plan + paid | Free plan + paid |
| Starting price | $49/mo | £6/mo |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Cloud, Mobile | Cloud, Desktop, Mobile |
| Platforms | Web, iOS, Android | Web, Windows, macOS, Linux, iOS, Android |
| Integrations | 8 integrations | 3 integrations |
| Features SumUp POS 5/5 · uniCenta oPOS 4/5 | ||
| Inventory management | ✓ | ✓ |
| Offline mode | ✓ (best) | Not checked yet |
| Employee permissions | ✓ | ✓ |
| Multi-location support | ✓ | ✓ |
| Sales reporting | ✓ | ✓ |
| Specs | ||
| Hardware support | Both | Third_party |
| Our review | ||
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| Our verdict | SumUp POS is point-of-sale software for small businesses such as cafés, boutiques, salons, barbers, and pet stores. It brings order and payment processing, product catalogs, item modifiers, inventory and ingredient management, staff tools,… Read the review → |
uniCenta oPOS is an open-source point-of-sale system for retailers, restaurants, cafés, bars, supermarkets, and other hospitality or venue businesses. The free GNU GPL3 release includes broad POS capabilities, including barcode scanning,… Read the review → |
Strengths and trade-offs
SumUp POS — where it wins
- Free POS plan covers catalogs, orders, reporting, and basic staff details.
- Supports inventory, ingredient management, stock alerts, and offline mode.
- Works with SumUp and compatible third-party checkout hardware.
Where it doesn't
- Advanced staff, printer, and cashbook tools require the $49 monthly POS Plus plan.
- Customer rewards and automated marketing start with the $199 monthly tier.
- Paid subscriptions are paired with transaction fees.
uniCenta oPOS — where it wins
- Free GNU GPL3 release with source code
- Supports multi-store, multi-warehouse, and employee access levels
- Includes restaurant, inventory, reporting, and API features
Where it doesn't
- Hosted access is available only on the HOSTED plan
- Priority forum support requires the PLUS plan
- Hardware support depends on third-party peripherals
- SumUp POS6.8/10 · Free plan
A flexible POS with a free starting point, but advanced customer tools cost more.
Visit SumUp POSFull verdict → - uniCenta oPOS4.2/10 · Free plan
A broad open-source POS with inventory, reporting, restaurant tools, and hosted plans.
Visit uniCentaFull verdict →
All Point-of-Sale software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update