The short version: for most small businesses, Calendly, Acuity Scheduling, Square Appointments, and Setmore cover 90 percent of what you need, and the right one comes down to whether you take payments, run a team, or just need a diary that stops the back-and-forth emails. I've set up all four for clients, and the one that "wins" on paper is rarely the one that gets used.
What I tested and why this list is short
Over the past three years I've helped clients pick booking systems for a hair salon in Manchester, a business coach in Tel Aviv, a physiotherapist in Surrey, and my own consulting diary. That's not a lab test, it's real money and real bookings on the line, which is a better test than a spec sheet.
Here's the uncomfortable bit nobody selling you a booking platform wants to say out loud: the software makes almost no difference to whether someone books. What makes the difference is how many clicks it takes and whether the page loads on a phone in a pub car park with two bars of signal. I've watched a client lose bookings for months because their "premium" scheduling tool required a login before you could even see available slots. Swapping to a free Calendly link with zero login friction doubled her conversion from link click to booked call within six weeks. No new features, no extra spend, just fewer barriers.
Calendly: the default for one-to-one meetings
Calendly is where most solo consultants and coaches start, and for good reason. The free plan lets you connect one calendar and run one event type, which is enough for a lot of freelancers. Essentials runs around £8 to £10 a month per user, Teams is roughly £14 to £16 a month per user, and that unlocks group events, reminders, and integrations with Zoom or Google Meet.
What I like: the booking page is fast, it syncs with Google, Outlook, and iCloud calendars so you never get double-booked, and clients rarely ask "how do I use this." What I don't like: if you sell services with variable pricing or need to take a deposit at the point of booking, you'll need to bolt on Stripe and manage payment logic yourself. It's built for meetings, not for taking money.
Good fit: consultants, coaches, freelance designers, anyone whose main product is their time in a call. If you're a student or a side-hustler running tutoring sessions or freelance work alongside studying, this is worth reading alongside our piece on online business ideas for students, since a lot of those businesses live or die on how easy it is to book a slot.
Acuity Scheduling: the one for service businesses that take money upfront
Acuity (owned by Squarespace) sits a level up in complexity and cost, running from around £14 a month for the Emerging plan up to £42 or so for Powerhouse, depending on currency and any current promotion. It handles intake forms, package deals, class scheduling, and payment collection at the point of booking through Stripe, Square, or PayPal.
I set this up for a physiotherapist client who needed clients to fill in a health intake form and pay a deposit before their first session. Calendly couldn't do that cleanly. Acuity did it in an afternoon, including a cancellation policy that automatically charges a no-show fee if someone cancels inside 24 hours. That single feature paid for the subscription in the first month, because she'd been losing roughly two appointment slots a week to last-minute no-shows.
Good fit: therapists, tutors, consultants running paid packages, anyone who needs forms and deposits, not just a time slot.
Square Appointments: the one for anyone already taking card payments
If you already use Square for point-of-sale, Square Appointments is close to a no-brainer. Solo users get it free, and team plans start around £29 to £45 a month per location depending on team size. It ties directly into the same dashboard you use for sales, stock, and staff, which matters more than it sounds.
The salon client I mentioned earlier runs Square Appointments because her stylists take walk-in card payments and booked appointments through the same till. Splitting those into two separate systems, one for bookings and one for payments, was creating reconciliation headaches every week. One dashboard fixed it.
Good fit: salons, barbers, personal trainers, mobile beauty therapists, anyone who takes card payments daily and wants bookings living in the same system, not a separate app.
Setmore: the free option that's better than it should be
Setmore's free plan supports up to four team members with unlimited appointments, which surprises people the first time they see it, because most "free forever" plans cap you at one user or a handful of bookings a month. Paid plans start around £5 to £9 a month per user for SMS reminders, Zoom integration, and custom branding.
I recommend this to very early-stage businesses, new limited companies, or anyone testing an idea before committing spend. It's not as polished as Acuity and the payment integrations are more limited, but if your budget this month is zero, this is where I'd point you.
SimplyBook.me: worth knowing about for niche industries
SimplyBook.me deserves a mention because it covers industries the big four sometimes miss: photography studios, escape rooms, driving instructors, tattoo studios. Plans start around £8 a month and scale with the number of bookings you take rather than purely the number of staff, which can work out cheaper for a solo operator with a high booking volume and no team to manage.
Want AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
The comparison most people skip: total cost over a year
Here's a step-by-step way to compare these instead of guessing off a homepage:
- Write down your real monthly booking volume from the last three months, not a guess.
- List every fee: monthly subscription, payment processing fee (usually 1.4 to 2.9 percent plus a fixed fee per transaction), SMS reminder costs if charged separately, and any charge for extra staff logins.
- Multiply the payment processing fee by your average booking value and volume to get a real monthly cost, not just the subscription price.
- Trial the actual booking page yourself on your phone, on mobile data, not office wifi. Time how long it takes from clicking the link to a confirmed slot.
- Ask two existing clients to book something using the trial link and watch, don't tell them what to click. This is the step almost everyone skips and it's the one that predicts real-world conversion.
When I ran that exercise for the physiotherapist, Acuity's subscription looked £10 more expensive a month than a rival, but its lower payment processing rate and the deposit feature that stopped no-shows made it roughly £140 a month cheaper once real numbers went in. The homepage price never tells you that.
Where AI changes the picture
The newer layer worth watching in 2026 is AI scheduling assistants that sit on top of these platforms, ones that can answer a client's question about availability by text or WhatsApp and then push the booking straight into Calendly or Acuity without a human touching it. I've built simple versions of this for clients using no-code automation tools connected to their existing booking software, and it's cut response time on enquiries from hours to under a minute in some cases. If you're weighing up whether to build this yourself or bring in help, it's usually a half-day project for someone who does this regularly, which is the kind of thing an AI consultant for small business can set up rather than you losing a weekend to trial and error.
The bit people get wrong when they promote their booking link
A booking system is only as good as the traffic that reaches it. I still see small businesses drop a generic "book now" link at the bottom of a website footer and wonder why nothing happens. The link needs to live where people are paying attention: pinned in an Instagram bio, in the first line of an email signature, and shared directly in social posts rather than buried three clicks deep. If social promotion is part of how you drive people to your booking page, it's worth tightening up your wider toolkit too, and our list of Twitter tools covers scheduling and link-tracking options that work well alongside a booking page link.
It's also worth thinking about your booking page as part of your brand experience, not a bolt-on. A mismatched font or a generic template screams "afterthought" to a new client deciding whether to trust you with their money. The way Bulb built a consistent brand across every touchpoint is a good example of treating even the small, functional pages of a business, booking included, as part of the overall impression you're giving.
My honest recommendation
If you're a solo consultant or coach and money changes hands after the meeting, start with Calendly's free or Essentials plan. If you're a therapist, tutor, or anyone taking deposits and forms, go straight to Acuity. If you already run Square for payments, use Square Appointments and don't overthink it. If your budget is zero this month, Setmore's free plan will carry you further than you'd expect.
Don't pick based on the longest feature list. Pick based on the fewest clicks between "I want this" and "it's booked," because that's the only number that moves your revenue.
Frequently asked questions
What is the cheapest booking website for a small business?
Setmore's free plan is the cheapest usable option, supporting up to four team members and unlimited bookings with no monthly fee, though SMS reminders and custom branding require a paid upgrade of around £5 to £9 a month per user.
Do I need a paid booking system if I only take a handful of appointments a week?
No. If your volume is low, a free plan on Calendly or Setmore will cover it comfortably, and you should only pay once you need features like deposits, forms, or team scheduling that the free tiers don't support.
Which booking website is best for taking payments at the time of booking?
Acuity Scheduling handles deposits, packages, and card payments most cleanly for service businesses, while Square Appointments is the better choice if you already process daily card payments through Square.
How much time should I spend testing a booking platform before committing?
Give yourself a proper trial period, most offer 14 to 30 days free, and during it ask at least two real clients to book something without guidance so you see genuine friction points rather than what you assume works.
Related reading: How Online Booking Systems Reduce No-Shows for Small Businesses and How Do You Set Up Appointment Booking On Your Website (A Step-by-Step Guide).
