Acuity is a flexible scheduler with a monthly fee; Square starts at $0 and makes its money on processing. Here's the honest comparison for a solo hair stylist.
Full disclosure before anything else: we make ChairCal, one of the tools mentioned at the end of this post. So read the Acuity and Square numbers — they're all from the vendors' own pages, linked below — and make up your own mind.Acuity and Square Appointments are two of the most common names a solo stylist runs into when shopping for a booking tool, and they answer the "how do I charge you" question in opposite ways. Acuity is a general-purpose scheduler you pay a flat monthly fee for. Square starts at $0/month and earns on the payment instead. Same job — an online booking page and a calendar — two very different bills.Neither is built specifically for hair. That's not a knock; it's the thing to know going in. Below is what each actually costs and where each fits.How the two price themselvesThe whole comparison starts with the billing model, because it's where they diverge hardest.Acuity charges a subscription. Plans start at $16/month billed annually and run up to roughly $49/month across three tiers, per Acuity's pricing page (verified July 2026). The exact per-tier prices move with billing terms and promotions often enough that I won't pin a number to each middle plan here — check the page for the current figure. What you're buying up the tiers is more calendars, SMS reminders, and advanced features; the entry tier is a single calendar.Square charges on processing, not the plan. The Free plan is genuinely $0/month per location, with Plus at $49/month and Premium at $149/month, per Square's pricing page (verified July 2026). Square makes its money when a client taps a card: 2.6% + 15¢ in person and 3.3% + 30¢ for online booking payments, per Square's fee schedule (verified July 2026).
The two billing shapes
Acuity: a predictable monthly fee, no card processing built in — you bring your own payment method (or add Acuity's, at its own rate).Square: $0 to hold the plan, then a cut of every card payment. Your "cost" scales with how much you run through Square, not with a subscription.
What that means for your actual billThe honest way to compare a subscription tool against a processing-based one is to put a real month next to each. Here's the shape — illustrative numbers, plug in your own:
The math
Say you run $8,000/month in card payments across roughly 80 appointments, mostly in person.Square Free: $0 subscription. Processing at 2.6% + 15¢ → $8,000 × 2.6% = $208, plus 80 × 15¢ = $12 → ~$220/month, all of it processing.Acuity entry tier: ~$16/month subscription. Acuity doesn't process payments itself on that plan, so your card fees depend on whatever processor you connect. If that processor runs a similar ~2.6% + 15¢, you're at ~$16 + ~$220 = ~$236/month — the subscription on top of processing that lives somewhere else.
The point isn't that one number is smaller — it's that they're not the same kind of cost. With Square, the booking tool and the payment rail are one bill. With Acuity, the $16–$49 buys you the scheduler, and the card processing is a separate arrangement you set up yourself. If you already have a processor you like, that separation can be a feature. If you don't, it's one more thing to wire up.What each is actually good atAcuity's strength is flexibility. It's not a salon tool — it's a scheduler for anyone who books time: consultants, tutors, coaches, photographers, and yes, stylists. That generality shows up as deep control over intake forms, appointment types, availability rules, and calendar syncing. If your booking logic is fussy, Acuity bends to it.Square's strength is that it's a POS first. If you already ring people up on Square — a reader at the chair, retail on the side — then Appointments folds into a stack you already run. One login, one payout, one dashboard. The Free plan covers online booking, unlimited staff calendars, and reminders at $0. The catch worth naming: cancellation policies, no-show fees, and the waitlist sit on Plus at $49/month, per Square's plan comparison. So the "free" plan doesn't touch the one problem most stylists start paying for.
Acuity — flat subscription, bring your own processor$16from, per month
Square Free — $0 plan, pay on processing$0plan fee
Square Plus — adds no-show fees + waitlist$49per month
Illustrative framing, not a like-for-like quote. Acuity's fee is the scheduler; Square's $0 moves the cost into processing. Cancellation tooling on Square lives on the $49 Plus plan.Where neither one fits: cancellations and Process TimeHere's the honest gap in both, and the reason ChairCal exists.Acuity and Square are general schedulers. When a client cancels, neither does anything active to fill that hole. Square Plus has a shared waitlist — better than nothing, but it's first-come: whoever taps fastest wins, not the regular you actually wanted in that chair. Acuity's entry tier doesn't have a waitlist concept aimed at last-minute fills at all. In both cases, recovering a cancelled slot is still a manual scramble of texts and an Instagram story.The mechanism ChairCal is built around is a priority blast: when a slot opens, your top regulars get texted one at a time, in the order you'd want them, each with a real short hold before the offer rolls to the next person. It's a different thing than a shared waitlist — it's built to get the right someone back in, not just someone. We wrote up the mechanics in How to fill a same-day cancellation.The second gap is Process Time. When you're waiting on color to process, that's a live window you could be cutting someone else's hair in. Neither Acuity nor Square treats that processing gap as a first-class booking concept you can deliberately book a second client into. ChairCal does — that's the Process Time feature.Who should pick whichBeing fair to both, because they earn it:Pick Acuity if you want a flexible, well-built general scheduler, you have complex intake or availability needs, and you already have a payment setup you're happy with. The flat fee is predictable and the scheduling engine is genuinely good.Pick Square if you're already on Square for payments — the $0 Free plan and one-stack convenience are hard to beat, as long as you don't need cancellation tooling (that's the $49 Plus jump).Look past both if your one expensive problem is cancellations or wasted processing time. That's a salon-specific problem, and a general scheduler — subscription or free — isn't shaped for it.If you want to see whether cancellation math justifies any dedicated tool over a general scheduler, the ROI tool on our pricing page takes your ticket, cancel rate, and recovery rate and shows the annual number. If it's smaller than the software, you have your answer.ReferencesAcuity Scheduling. Pricing.acuityscheduling.com (verified July 2026)Square. Appointments Pricing & Plans.squareup.com/us/en/appointments/pricing (verified July 2026)Square. What are Square's fees? Square Support Center. squareup.com/help/us/en/article/5068 (verified July 2026)Related readingAcuity Scheduling for stylists: the honest review — a closer look at where the general scheduler helps and hurts.Square Appointments for solo stylists: the real cost of "free" — the processing-rate math behind the $0 plan.Booking software for solo stylists, ranked honestly — where both sit against the rest, use case by use case.Setmore and Calendly for stylists — two more general schedulers, held to the same test.