The short version: Calendly still wins for most solo business owners because it is fast to set up and cheap enough to ignore, but SimplyBook.me is better if you take payments and Cal.com is worth a look if you want full control without a monthly bill. The tool matters far less than how you configure your buffers, and most solo owners never fix that part.
What a booking tool needs to do for one person
Run a business on your own and your calendar is your inventory. There is no receptionist, no second pair of hands to catch a double booking, and no one to notice you have three calls back to back with zero room to breathe or make notes. A booking tool for a solo owner has one job: protect your time while making it dead simple for someone else to grab a slot without a back-and-forth email.
That sounds obvious, but I have watched consultants, coaches and freelancers pick tools based on the flashiest feature list rather than the three things that matter for a one-person operation:
- How fast can you set it up (an evening, not a week)
- Does it stop double bookings across the calendars you use
- Can it take a deposit or full payment at the point of booking, so you stop chasing invoices
Everything else, the branding, the workflow automations, the fifty integrations you will never touch, is noise for a solo owner. If you are still comparing this against wider appointment booking software for a small business budget, the same rule applies but the maths changes once you have staff. On your own, price per seat barely matters because there is only one seat.
The tools I would put in front of a solo owner
Calendly
Calendly is the default for a reason. The free plan gives you one event type and basic scheduling, which is enough for a coach doing discovery calls. The paid tiers run from around 10 to 12 pounds a month for the Standard plan up to roughly 16 pounds for Teams, and that buys you multiple event types, buffer rules, and reminders that cut down on no-shows. I have used Calendly since 2016 and the reason I never moved away entirely is that clients already know how it works. Nobody has to learn anything.
SimplyBook.me
If you take deposits or full payment before a session, SimplyBook.me is the one I point people to. It has a free tier for up to 50 bookings a month, which is plenty for someone starting out, and paid plans from around 8 pounds a month once you outgrow that. It was built for service businesses, so it handles things like class sizes, staff schedules if you ever hire, and payment collection at the point of booking without a third-party plugin.
Cal.com
Cal.com is the open source alternative and it appeals to a specific kind of solo owner: the one who does not want to hand their scheduling data to another SaaS company or who wants to self-host. You can run it free if you host it yourself, or pay around 12 to 15 pounds a month per user for the hosted version. It is a bit more setup work than Calendly, so I would only recommend it if you are already comfortable with basic tech and want more control over the look and the data.
Setmore
Setmore has a generous free tier, up to four staff and unlimited bookings, and paid plans starting around 5 pounds a user. It is a solid pick if you eventually add a virtual assistant or a part-time associate and want the booking system to grow with you without switching platforms.
Square Appointments
If you already take card payments through Square, this is worth a look purely because it is free for a single provider and the payment processing is built in. I would not choose it on scheduling features alone, but for a hairdresser, therapist or tutor who is already inside the Square ecosystem, it removes one more tool from the stack.
A real mess I caused with buffer settings
A few years ago I set up a new Calendly link for a batch of discovery calls tied to a launch. I copied the settings from an old link in a rush and did not check the buffer time between bookings. For three days, calls landed back to back with no gap at all. One client in California booked a 9am slot straight after a UK client's 5pm slot, which on paper looked fine until I realised I had zero minutes to reset, make notes, or even get water. By day two I was running fifteen minutes late to nearly every call and apologising at the start of each one instead of listening.
The fix took four minutes: I went into the event settings, added a 15-minute buffer before and after each meeting, and capped bookings per day at five. That single setting change did more for my sanity than switching tools ever would have. This is the bit almost nobody says plainly: the booking tool is not your problem. Your calendar boundaries are. You can buy the most expensive scheduling software on the market and still burn yourself out if you let people book six calls in a row because the software technically allows it. The tool will do exactly what you tell it to do, which is often the issue.
Setting up a booking system in one sitting
Here is the actual sequence I would follow if I were setting this up for a solo client today, start to finish, in under an hour:
- Pick one tool and connect it to the calendar you check daily, not a spare one you forget exists
- Set a minimum 10 to 15 minute buffer before and after every meeting type
- Cap the number of bookings allowed per day, even if that number feels low at first (start with four)
- Turn on a minimum notice period of at least 12 to 24 hours so people cannot book you for fifteen minutes from now
- Add a short pre-call questionnaire so you walk in knowing what the person wants, cutting rambling intros
- Switch on email and text reminders 24 hours and 1 hour before, which typically cuts no-shows by a noticeable margin
- If money changes hands, connect payment at booking rather than invoicing after, because chasing money after the fact costs you more time than the call itself
Do those seven things and the specific tool you chose stops mattering nearly as much as people assume it does.
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Where booking tools fit into the rest of your stack
A booking link on its own is fine, but it works better once it talks to the rest of what you use. If you send a follow-up sequence after a discovery call, check that your booking tool can trigger it, most connect to Zapier or Make without much fuss. If you are weighing this against a wider marketing automation tool for your business, know that scheduling is usually the smallest, cheapest piece of that puzzle and rarely the thing worth agonising over. Spend your decision-making energy on the CRM or email tool instead, and let the booking link be boring and reliable.
On cost, solo owners often worry that adding one more subscription tips them over some invisible line. It rarely does. A booking tool at 10 to 15 pounds a month sits comfortably inside what most one-person businesses already spend on software, and if you want the full picture across everything from AI writing tools to scheduling, the breakdown in how much AI tools cost for small teams gives a realistic monthly range to benchmark against.
And if scheduling is just one piece of how you run your day, it is worth pairing it with the wider systems covered in the best productivity tools for entrepreneurs, because a good calendar link paired with a messy task list still leaves you scrambling.
The uncomfortable bit about being fully booked
Solo owners tend to treat a full calendar as proof they are doing well. Sometimes it is the opposite. If your booking link shows availability every day of the week with no cap, you have built a system that rewards being reachable at all times, and clients will use every slot you give them because you gave it to them. I have seen coaches proudly show me calendars with back to back sessions five days a week and call it demand, when what it is is a tool set up with no limits, run by someone who has not decided their own working hours yet. The software did not do that to them. They did that to themselves through the settings they never bothered to check.
Fix that before you fix anything else. Pick a tool, set the caps, set the buffers, and let the calendar work for you rather than the other way round.
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Frequently asked questions
Is Calendly worth paying for as a solo business owner?
Yes, once you need more than one event type or want buffer and payment features, the Standard plan at around 10 to 12 pounds a month pays for itself the first time it stops a double booking or an awkward client email.
What is the cheapest booking tool for a solo owner who is just starting out?
SimplyBook.me and Setmore both have free tiers generous enough for early-stage solo owners, with SimplyBook.me covering up to 50 bookings a month and Setmore covering unlimited bookings for a single user at no cost.
Do I need a booking tool that integrates with my email marketing?
Not immediately, but if you plan to follow up automatically after calls, choose a tool that connects to Zapier or Make so a booking can trigger an email sequence without you doing it by hand each time.
How do I stop back to back bookings from burning me out?
Set a mandatory buffer of 10 to 15 minutes before and after every meeting type and cap the number of daily bookings inside the tool's settings, most scheduling software allows this and it is the single biggest fix for calendar burnout.
