Meta Description: Deciding between SumUp POS and Shopify POS for your UK pop-up shop? We compare pricing, mobility, and features to help you find the best POS system for your temporary venture.
If you're planning to launch a pop-up shop in the UK, you've probably realised that the "pop-up" part is the easy bit. It's the logistics that can give you a bit of a headache. Between finding a space in a trendy London market or a coastal festival and sorting out your stock, the last thing you want to worry about is whether your till is going to work when a queue starts to form.
Choosing the right epos system is one of those decisions that feels small but has a massive impact on your day-to-day sanity. In the world of temporary retail and food stalls, two names tend to come up more than others: SumUp and Shopify.
Both are heavyweights, but they serve very different masters. One is built for pure mobility and speed, while the other is an e-commerce giant that happens to have a very clever till app. We've spent a lot of time looking at both, and we’re here to help you figure out which one will actually make your life easier during your next pop-up event.
Why Your Choice of POS Matters for a Pop-Up
A pop-up shop isn't like a standard high-street store. You’re often working with limited space, potentially spotty Wi-Fi, and a short window of time to make as much impact (and profit) as possible. You need a pos system that is:
- Portable: You don't want a massive desktop unit if you're selling from a wooden hut or a small stall.
- Affordable: High monthly fees don't make sense if you're only trading for two weeks.
- Reliable: If the internet goes down, can you still take a payment?
- Quick to set up: You haven't got three days to calibrate a complicated retail pos system.
Alt Text: A small UK pop-up market stall using a mobile card reader for quick customer transactions.
SumUp POS: The King of Simplicity
When people ask us for the cheapest pos system that actually works, we often point them toward SumUp. It’s become a staple of the UK market scene for a reason.
The sumup pos experience is built around one thing: getting you up and running in minutes. For a pop-up, this is gold. You can literally download the app, connect a tiny card reader via Bluetooth, and start selling.
The Pros for Pop-Ups
- Low Entry Cost: SumUp is arguably the best pos system for those on a tight budget. There’s no heavy monthly subscription for the basic app, and hardware starts as low as £19 for the basic Air reader.
- Extreme Portability: Their devices, like the SumUp Solo, are pocket-sized. You can walk around your stall and take payments directly from customers without being tethered to a counter.
- No Long Contracts: This is huge for temporary shops. You aren't tied into a 12-month licence for a shop that’s only open for a month.
- Ease of Use: It’s so simple that you can train a temporary staff member how to use it in about thirty seconds.
The Downsides
- Basic Features: If you have a massive inventory or need complex reporting, SumUp might feel a bit "light."
- Transaction Fees: While there's no high monthly fee, the transaction fees (usually around 1.69%) can add up if you’re doing very high volumes.
If you’re looking for a simple, no-nonsense setup, you should also check out our SumUp POS system review for a deeper dive into the hardware.
Shopify POS: The Omnichannel Powerhouse
If you already run a successful online store using Shopify, then shopify pos is likely already on your radar. Shopify’s approach is a bit different. They want to bridge the gap between your "online self" and your "in-person self."
The Pros for Pop-Ups
- Unified Inventory: If you sell a t-shirt at your pop-up, it’s automatically deducted from your online stock levels. This prevents the nightmare of "overselling" something online that you just sold to a person standing in front of you.
- Customer Data: You can easily capture email addresses for your marketing list, which is the whole point of a pop-up, turning a one-time visitor into a long-term fan.
- Advanced Features: As a retail pos system, it’s incredibly powerful. You get deep analytics into what’s selling and when.
The Downsides
- Cost: Shopify is not the cheapest pos system. You need a Shopify subscription (starting around £25/month for Basic) plus the POS Pro add-on ($89/month) if you want the "smart" retail features, though the basic POS Lite is included.
- Complexity: It has a steeper learning curve than SumUp. It’s a professional-grade tool, and it feels like it.
For a full breakdown of how it handles larger scales, take a look at our Shopify POS review.
Alt Text: A modern boutique shop interior showing a Shopify POS tablet setup on a sleek counter.
Direct Comparison: Pricing and Fees
In the UK, we love a bargain, but we also hate hidden costs. Let's break down the "real" cost of these two for a typical 4-week pop-up shop.
| Feature | SumUp POS | Shopify POS |
|---|---|---|
| Monthly Fee | £0 – £19 (Basic vs Pro) | £25+ (Depends on Shopify Plan) |
| Transaction Fee | 1.69% (Fixed) | 1.7% – 1.5% (Depends on Plan) |
| Hardware Start | ~£19 | ~£49 (Card Reader) |
| Ease of Setup | 5/5 | 3.5/5 |
| Offline Mode | Limited | Yes |
As you can see, if you’re just testing the waters with a brand-new idea, SumUp is the lower-risk option. However, if you’re an established brand looking to sync your digital and physical worlds, the investment in Shopify is usually worth it.
Is There a Middle Ground?
Sometimes, neither of these fits quite right. Maybe you need something more robust than SumUp but less "e-commerce focused" than Shopify. This is where we often recommend looking at the Epos Now till system review.
Epos Now offers a fantastic balance for UK businesses. It’s a highly flexible epos system that works brilliantly for both retail and hospitality. If your pop-up is more of a "pop-up cafe" or a "street food stall," Epos Now or even a specialized restaurant pos system like Toast POS might be a better shout.
Alt Text: An Epos Now till system displayed in a busy coffee shop environment.
Mobility: The "Tap to Pay" Revolution
One thing we absolutely love about the current landscape in 2026 is that you don't always need a card machine anymore. Both SumUp and Shopify now support "Tap to Pay" on iPhone and Android.
This means your phone becomes the card reader. For a pop-up shop where you're literally just selling a few items at a craft fair, this is a game-changer. It makes your setup even cheaper because your hardware cost drops to zero.
However, we’d still recommend having a dedicated reader. Why? Because UK customers still like the familiarity of a card machine, and it saves your phone battery from dying halfway through a busy Saturday!
Inventory Management: The Silent Killer
Don't underestimate the stress of inventory. If you’re at a pop-up and you’re manually writing down what you’ve sold, you’re going to make mistakes.
Shopify wins hands-down here. Their inventory system is world-class. If you’re a retail-heavy business, having a retail pos system that knows exactly how many "Medium Blue Jumpers" you have left is vital.
SumUp has improved its inventory features recently, allowing you to upload product catalogues and track stock, but it's still a bit more manual than Shopify’s automated ecosystem.
Alt Text: A business owner checking inventory levels on a tablet using an EPOS app.
Which One Should You Choose?
We’ve laid out the facts, but we know you just want a straight answer. Based on our experience, here is how we would call it:
Choose SumUp POS if:
- This is your first pop-up and you want to keep costs to an absolute minimum.
- You don't have an online store (or don't plan to sync it).
- You need something that works "out of the box" in five minutes.
- You are a "micro-business" or a solo maker.
Choose Shopify POS if:
- You already sell on Shopify and want your stock to be 100% accurate across all channels.
- You want to collect customer data for advanced email marketing.
- You have a large range of products (SKUs) that need categorising.
- You are an established brand using the pop-up for marketing as much as sales.
Final Thoughts from What EPOS
At the end of the day, the best pos system is the one that stays out of your way and lets you talk to your customers. Pop-ups are all about the vibe and the connection. If you're faffing with a tablet that won't connect to the Bluetooth, you're missing out on sales.
If you’re still on the fence, we’d really suggest checking out the Epos Now till system review. It’s often the "goldilocks" solution for UK businesses: not too basic, not too complex, and very scalable if your pop-up becomes a permanent shop.
Whichever you choose, make sure you test it at home before you get to the stall. There’s nothing quite like the panic of a first customer waiting while you try to remember your password!
Happy trading, and we hope your pop-up is a massive success. It’s worth putting in the time now to get your tech right: you’ll definitely thank yourself when the Saturday rush hits.