- Best overall free: Cal.com — truly free, open source, no hidden limits, embeds anywhere
- Best for solo freelancers: Calendly free (1 event type, fine for simple use cases)
- Best for salons/spas: Square Appointments free (great for up to 1 staff member)
- Best for teams: Cal.com Teams (still free for basic team scheduling)
- Avoid: Fresha (locks you in, pushes marketplace), most "free trials"
Every small business needs a booking system. Every booking system claims to be free. Almost none of them are — at least not without significant limitations that will force you to upgrade the moment your business grows past "hobby."
I've tested them all properly — not just the signup page, but the actual experience of running 50+ bookings per month through each one. Here's the honest breakdown.
The Full Comparison
| Tool | Actually Free? | Free Limits | Paid from | Best for |
|---|---|---|---|---|
| Cal.comOUR PICK | Yes — genuinely | Unlimited bookings, event types, integrations. Cal.com branding on booking page (removable on paid) | $12/mo (branding removal, advanced features) | Most small businesses, embeds on any website |
| Calendly | Limited | 1 event type only. No group booking, no team features, no reminders on free | $10/mo per user | Solo freelancers with one simple booking type |
| Square Appts | Limited | Free for 1 staff member. Full booking + POS + no-show protection | $29/mo (2+ staff) | Solo salon/barbershop owner; anyone using Square POS |
| Setmore | Limited | Up to 4 staff, unlimited bookings. No SMS reminders, no 2-way calendar sync on free | $5/mo per user | Small teams who don't need SMS |
| Acuity / Squarespace | No | 7-day trial only | $16/mo | Existing Squarespace users |
| Fresha | Technically | Free but pushes marketplace model where they charge 20%+ on marketplace bookings; designed for salons/spas | Free + marketplace fee | Salons who want platform discovery (at a cost) |
| Google Appts | Yes | Basic booking via Google Business Profile. Limited customisation. No embed. | Free | Businesses who just want a simple GBP booking button |
| Booksy | No | Free trial only | $29.99/mo | Barbershops, salons with active client base |
Why Cal.com Wins
Cal.com is open-source — which means the free tier is genuinely unlimited, not "free until we decide to charge you." The core product: unlimited event types, unlimited bookings, email confirmations, calendar integrations (Google, Outlook, iCloud), and embeddable widgets for any website.
The booking experience for your clients is clean and fast. It works on mobile. It sends automatic confirmation and reminder emails. You can set buffer times between appointments, block days off, and create multiple service types. Everything you actually need to run a service business.
The one thing Cal.com's free tier doesn't have: SMS reminders. For most businesses, email confirmations are sufficient. If SMS reminders are critical for you (high no-show rate businesses like medical clinics, beauty salons), consider adding Brevo's free SMS tier or upgrading to Cal.com's $12/month plan.
How it compares to what you might be paying now
- Replacing Calendly Professional ($10/mo): $10/month saved, features mostly comparable
- Replacing Acuity ($16/mo): $16/month saved, Cal.com has comparable core features
- Replacing Booksy ($29.99/mo): $360/year saved, you lose the marketplace discovery but gain freedom
- Replacing Fresha (free tier + marketplace 20%): depends on your booking volume — could save $100s/month
When NOT to Use Cal.com
Cal.com is not the right choice if:
- You're a salon with 5+ staff and need a dedicated salon management system (look at Fresha free tier or Square for Teams)
- You need a built-in POS and inventory system alongside booking (Square Appointments integrates better with Square POS)
- You need HIPAA compliance for medical bookings in the US (Cal.com offers this on Business plan; for free, look at SimplePractice's free tier)
Setting Up Cal.com in Under an Hour
- Go to cal.com → Sign up free
- Connect your Google Calendar (so your availability is always accurate)
- Create your first event type: name, duration, description, price (optional), buffer time
- Set your availability (days + hours)
- Copy your booking link:
cal.com/yourusername/service-name - Add a "Book Now" button to your website linking to this URL
- Add the link to your Google Business Profile
- Test it: book a test appointment yourself
Your clients can now book 24/7, from any device, in any timezone. They get automatic confirmation and reminder emails. You get a calendar notification. You spent $0.
Our verdict
For the vast majority of small service businesses — salons, clinics, tutors, coaches, consultants, personal trainers, photographers — Cal.com free is all you need. It's genuinely free, genuinely good, and genuinely unlimited. Start there. Upgrade only when you have a specific feature need that you're willing to pay for. Don't pay for a booking system until you've tried the free one properly.
Ready to set up Cal.com for your business?
Our free Online Booking guide walks through the full Cal.com setup — step by step, with screenshots, for someone doing this for the first time.
See the Booking Guide →