Reservation app for restaurants: a UK indie's guide

Key takeaways

• Per-cover pricing models like OpenTable's can cost £250-£500+ a month at 500 covers, while flat-rate tools like Sully Booking charge £29/month with unlimited bookings.
• Deposits, card pre-authorisation and SMS reminders are essentials for independents, since a few no-shows a week can cost roughly £5,000 a year.
• Single-venue restaurants should prioritise a booking widget for their existing site and a floor plan that matches their room, not multi-site group features.
• Watch for hidden costs: SMS overage charges, deposit fees gated behind higher tiers, add-on pricing, and minimum contract terms.
• Test any reservation app on your real floor plan and live website during the trial, and confirm in writing what happens to your guest data if you cancel.

The right reservation app for restaurants at your size is the one that charges a predictable flat rate, takes deposits or card pre-authorisation against no-shows, and drops a booking widget straight into the site you already have. Per-cover models like OpenTable can cost more than a flat-fee system at 500 covers a month. This guide shows you how to compare them properly.

reservation app for restaurants

A reservation app for restaurants takes bookings online, manages your floor plan, sends SMS reminders, and takes deposits or card pre-authorisation to cut no-shows. For an independent operator, it replaces the paper book and phone without adding headcount.

The catch is how you pay. Most familiar tools charge per cover plus a monthly subscription; OpenTable, for example, prices its standard plan around a monthly fee plus a fee for each cover booked (OpenTable pricing). At 500 covers a month, that model rewards volume with cost. Flat-rate alternatives, like Sully Booking at £29/month with unlimited bookings, price the same whether you do 200 or 800 covers. We compare both models across the guide on our blog.

What should you actually look for in a reservation app for restaurants?

Pricing model

Check how you pay before anything else. Per-cover fees scale directly with your success: 500 covers a month means 500 charges, forever. A flat rate means your cost stays the same whether you do 300 covers a week or 800. For a single-venue independent, the flat rate usually wins on predictability alone.

Deposits and no-show protection

No-shows cost you real money: a four-top that doesn't arrive is four covers you can't resell at 7pm on a Saturday. Look for card pre-authorisation or deposit capture, plus automatic SMS reminders, and treat these as essentials rather than nice-to-haves.

Table management and floor plan

Your app should mirror your actual room, including the quirks: the six-seater by the window, the two tables you push together for Sunday lunch sittings. If the floor plan can't represent your gastropub honestly, the bookings it takes won't match the tables you can actually serve.

Booking widget and site integration

The widget must sit cleanly on the site you already have, whether that's WordPress, Squarespace or Wix, without a rebuild. That's exactly what Sully Booking is built around: a booking widget for your existing site, deposits and SMS reminders, and a floor plan that matches your room, all at a flat £29/month with unlimited bookings, no contracts, and cancel anytime. The honest limitation: if you later want marketplace-style discovery beyond your own website, a flat-rate widget-only tool won't provide it, and you'd weigh that against the per-cover costs of alternatives like OpenTable or ResDiary.

How do pricing models differ between reservation apps — per cover, commission, or flat rate?

There are three models you'll meet: a monthly subscription plus a fee per cover, commission on bookings, and a flat monthly rate. At 500 covers a month, the difference is the biggest line item in your decision.

Worked example: 500 covers a month

Model	How it charges	Illustrative cost at 500 covers/month
Per cover + subscription	Fixed monthly fee plus roughly £0.50–£1 per cover	£250–£500+ on top of the subscription
Commission	A cut of each booked table or prepaid deposit	Varies with booking value; scales up as you grow
Flat rate	One monthly price, unlimited bookings	£29/month, e.g. Sully Booking

The per-cover figures above are illustrative — OpenTable (https://www.opentable.com) charges per cover plus a monthly fee, and ResDiary (https://www.resdiary.com) works on subscription pricing, so check their current pages for exact numbers. What stays true is the shape of the cost: per-cover and commission bills rise every time you fill more tables, while a flat rate doesn't. We've broken down the OpenTable comparison in detail at Sully Booking vs OpenTable.

Which model suits which venue

Per-cover and commission pricing can suit venues that lean heavily on a booking marketplace for new covers. If your bookings come mostly from your own site, walk-ins, and regulars, you're paying a variable tax on demand you generated yourself. A quiet February costs you less under variable pricing, but a packed Sunday lunch with two sittings costs you more — and over a year, the busy months dominate. For a single-site gastropub around 500 covers a month, a flat rate is usually cheaper and far easier to budget.

When does your restaurant need deposit and no-show protection features?

If you take bookings for Sunday lunch sittings or large gastropub tables, you already know the pain: a no-show on an eight-top wipes out the margin on that whole service. Deposits and card pre-authorisation are worth having once no-shows cost you more per month than the protection itself does.

Work it through with your own numbers. If you lose four covers a week to no-shows at £25 a head, that is roughly £5,000 a year walking out the door. A deposit requirement of £5-£10 per head, or a card held against the booking, usually recovers most of that because people cancel rather than ghost.

SMS reminders are the cheapest fix and worth switching on regardless. A reminder a few hours before the sitting cuts accidental no-shows, and it also prompts honest cancellations you can reseat.

Evaluate the features on three points: can you take deposits only on peak sittings rather than every booking, does pre-authorisation work with your card processor, and can guests amend or cancel from the reminder without calling you. A booking widget that handles this cleanly on mobile matters too — see https://sullybooking.com/blog/booking-widget-mobile-fixes for what breaks and how to fix it.

Which reservation app features matter most for small independent restaurants vs groups?

If you run one venue, your priorities are narrow: a booking widget that works on your existing site, deposits or card pre-authorisation to cut no-shows, SMS reminders, and a floor plan you can manage alone on a busy Sunday lunch. You don't need multi-site reporting or shared guest databases across locations.

A 2-5 venue group flips that list. Cross-venue reporting, centralised guest records, and per-location access controls matter more than shaving £10 off a monthly fee, because the admin cost of juggling separate systems grows with every site.

The mistake single-venue owners make is paying for group features they'll never use, or choosing a tool so basic that deposits and table management have to be handled by hand. We cover seven of these traps in our guide to reservation system mistakes. Match the feature list to your venue count before you compare prices.

How do reservation apps handle table management and walk-ins alongside bookings?

A booking is only half the job; the other half is seating people who just walk in off the street. Before buying, check three things: whether the floor plan matches your actual room layout, whether staff can merge tables for a party of six on a Sunday, and whether walk-ins can be added to the same view as bookings so you can see the whole service at a glance. Most systems cover the basics. SevenRooms positions itself around managing covers across booking channels (its pricing page), while a paper book plus the phone handles walk-ins fine but gives you no record of no-shows or deposits. Sully Booking includes a floor plan and table management at its flat £29/month, with unlimited bookings and no per-cover fees. Where it falls short: if you run a large multi-room venue with complex seating rules, test the floor plan against your layout during the trial before committing.

What hidden costs should you watch for when comparing reservation apps?

The sticker price rarely tells the whole story. Watch for four things: SMS charges, deposit processing fees, add-on pricing, and contract terms.

SMS reminders are the most common surprise. Some providers include a small monthly allowance, then bill per message once you exceed it — at 500 covers a month, reminder texts add up fast. Deposit and card pre-authorisation features are sometimes gated behind a higher tier, even though no-show protection is why many independents buy a system in the first place. Check whether the booking widget, floor plan, or reporting sit behind add-on fees too.

Contracts matter as much as fees. Ask three questions before signing: is there a minimum term, what happens to your guest data if you leave, and is the per-cover rate fixed or does it rise with volume? A flat £29/month with unlimited bookings and no contract removes all three questions — which is the model Sully Booking is built on. Whatever you choose, price the full year, not the headline monthly figure.

How do you test a reservation app before committing?

Most apps offer a trial or a demo, so use it on your real setup rather than a demo account. Run a weekend service against your actual floor plan, add a booking widget to your live WordPress or Squarespace site, and place a test booking from your own phone to see the SMS reminder arrive. Check that deposits and card pre-authorisation work with your card processor before a busy Sunday lunch sittings run exposes a gap.

The 10-point evaluation checklist

1. Confirm the total monthly cost at your covers per month, including any per-cover or commission element. Commission models vary: TheFork, for example, charges restaurants a commission on bookings, with rates published for UK/IE on its pricing page.
2. Test the deposit flow end to end, including refunds for cancellations.
3. Send yourself an SMS reminder and check the wording and timing.
4. Embed the widget on your existing site and check mobile speed.
5. Build your real floor plan and seat a full service.
6. Walk in a few bookings by phone and see how staff log them.
7. Export your guest list and confirm you can take it with you.
8. Check whether no-show protection covers partial online bookings.
9. Ask what happens to your data and your monthly bill if you cancel.
10. Time the setup: if onboarding takes more than an afternoon, it will cost you covers.

Run the same checklist against every option, including the paper reservation book plus phone you may be replacing. If a vendor won't answer point 7 or point 9 in writing, treat that as your answer.

How does Sully Booking score against this checklist?

Running Sully Booking through the same criteria honestly: it scores well on pricing (flat £29/month, unlimited bookings, no per-cover fees, cancel anytime), deposits and SMS reminders, and a booking widget that drops into WordPress, Squarespace or Wix.

Where it falls short: if your priority is filling empty tables from an external booking site, Sully doesn't offer that, and neither does a paper book. Its table management suits single-venue independents running Sunday lunch sittings, not multi-room floor plans. For a 500-covers/month independent, the maths is simple: £29/month, one number to check against your current bill.

FAQ

How much does a reservation app cost for a small restaurant in the UK?

Expect either a flat monthly fee or a subscription plus a per-cover charge. Flat-rate tools like Sully Booking sit around £29/month with unlimited bookings. Per-cover models add roughly £0.50 to £1 for every cover booked, which at 500 covers a month can mean £250 to £500 or more on top of the subscription.

Do I still need a phone and paper book if I use a reservation app?

You'll keep the phone for late calls and regulars, but the paper book becomes redundant. A reservation app handles online bookings, deposits, SMS reminders, and the floor plan in one view, and logs no-shows and cancellations automatically. Most venues keep a phone line open for same-day changes but retire the paper book within the first week.

Can a booking widget work on my existing WordPress or Squarespace site?

Yes. Most reservation apps provide an embeddable widget that drops into WordPress, Squarespace, or Wix without rebuilding anything. Sully Booking is built entirely around this: a widget for your current site, plus deposits and SMS reminders. Test it during the trial, though, because mobile loading speed varies between providers and affects how many guests actually complete a booking.

What happens if a guest no-shows after paying a deposit?

It depends on the system. With card pre-authorisation, you can charge a no-show fee or keep the deposit without chasing the guest. With deposit capture, the money is already taken. Either way, the table is protected from a total loss, and the guest's record flags the no-show for future bookings. Confirm refund handling for cancellations before you commit.

Is OpenTable worth it for an independent restaurant?

It depends where your bookings come from. OpenTable charges a monthly fee plus a per-cover fee, so at 500 covers a month the variable charges can exceed a flat-rate system's entire bill. It makes sense if you rely on its booking marketplace for new covers. If most bookings arrive through your own site and regulars, that per-cover cost is a tax on demand you generated yourself.