Softwr

Calendars · head to head

Assistant.to vs Zcal

Assistant.to logo

Assistant.to

Calendars

The easiest way to schedule meetings

From
Free
Rated
-
Full reviewWebsite
Zcal logo

Zcal

Scheduling

Scheduling with an unusually large free tier and heavy branding control

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Assistant.to no publicly published pricing rates on website; Zcal zcal branding stays on the free booking page, so the tier that is otherwise generous is not usable as a customer facing page for a business that cares how it looks.
  • They diverge on capability: Assistant.to covers In-email scheduling, Zcal covers Unlimited booking links.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Assistant.to and Zcal actually diverge.

Attributes where Assistant.to and Zcal differ
AttributeAssistant.toZcal
Pricing modelfreemiumPer user per month
PlatformsChrome-extensionWeb
CategoryCalendarsScheduling
Founded2014Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Assistant.to

  • In-email scheduling
  • One-click booking
  • Google Calendar sync
  • Time zone handling
  • Simple interface
  • Gmail
  • Google Calendar
  • Chrome-extension support

Only in Zcal

  • Unlimited booking links
  • Branded booking pages
  • Meeting polls
  • Group events
  • Round robin and collective
  • SMS reminders
  • Paid bookings

What people use each for

The jobs each tool is most often brought in to do.

Assistant.to

  • Schedulingnot Zcal
  • Appointment bookingnot Zcal
  • Time trackingnot Zcal
  • Resource managementnot Zcal
  • Team coordinationnot Zcal

Zcal

  • A consultant who runs several different meeting types and refuses to pay a subscription for the privilege of having more than one booking linknot Assistant.to
  • A coach or recruiter who wants a branded page with a welcome video and intake questions before the call happensnot Assistant.to
  • A small team that needs round robin distribution of inbound calls without buying a full sales engagement platformnot Assistant.to
  • Anyone taking payment at the point of booking, where the Stripe connection removes an invoicing step afterwardsnot Assistant.to

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Assistant.to

  • No publicly published pricing rates on website
  • Requires scheduling demo or contacting sales to obtain pricing information
  • Free trial available but no specific trial duration mentioned

Zcal

  • Zcal branding stays on the free booking page, so the tier that is otherwise generous is not usable as a customer facing page for a business that cares how it looks.
  • Paid tier prices are not stated plainly in the product documentation and third party sources disagree on the figure, so the paid step up has to be confirmed on the vendor pricing page before budgeting for a team.
  • SMS reminders are credit metered on paid tiers, so a high volume booker can exhaust the allowance and be pushed up a tier by message count rather than by needing any feature.
  • The integration list is short next to established competitors, and there is no deep native CRM object writing, so a sales team that wants bookings to create and update CRM records will need automation glue.
  • It is a small vendor in a category dominated by much larger companies, which is fine for a personal booking link and a real consideration if booking is a core business process you cannot afford to migrate off in a hurry.

Pricing, plan by plan

Assistant.to

Free
  • FreeFree
    • In-email scheduling
    • Basic features
  • Pro$5/month
    • Team features
    • Custom branding
    • Priority support

Zcal

Free
  • Free ForeverFree
    • Unlimited booking links
    • Unlimited connected calendar accounts
    • Meeting polls and group events
  • Pro$undefined/month
    • Per user per month, priced on the vendor pricing page
    • Team creation and team pages
    • Round robin and collective events
  • Business$undefined/month
    • Per user per month, priced on the vendor pricing page
    • Everything in Pro
    • Custom domain and custom sending email domain

Which should you pick?

Choose Assistant.to if

  • You need in-email scheduling.
  • You want to start without paying.
  • You work on Chrome-extension.
  • You also want one-click booking.
Assistant.to review

Choose Zcal if

  • You need unlimited booking links.
  • You want to start without paying.
  • You also want branded booking pages.
Zcal review

Questions people ask

Is Assistant.to or Zcal better?
Neither clearly leads. Assistant.to starts at Free and Zcal at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Assistant.to or Zcal?
Assistant.to starts at Free and Zcal at Free.
Does Assistant.to or Zcal run on more platforms?
Assistant.to runs on Chrome-extension. Zcal runs on Web.
Can I use Assistant.to for free?
Both have a free tier, so you can try either at no cost before committing.
What is Assistant.to best used for?
Assistant.to is most often used for scheduling, appointment booking, time tracking, resource management. Of those, scheduling and appointment booking are not what Zcal is typically brought in for.
What can Assistant.to do that Zcal cannot?
Assistant.to covers In-email scheduling, One-click booking, Google Calendar sync, Time zone handling. Zcal covers Unlimited booking links, Branded booking pages, Meeting polls, Group events.

Answered from the vendors’ own pages

Assistant.to: How much does Cirrus Insight (Assistant-to) cost?

Cirrus Insight does not publish specific pricing on its website. Pricing is customized based on your organization's needs. The platform offers a free trial and allows you to build a custom quote in the self-service hub or schedule a demo with the sales team.

Source
Zcal: Is the free plan actually usable?

Yes. Unlimited booking links and unlimited calendar connections, which is more than most competitors allow, but Zcal branding stays on the page.

Assistant.to: How does Cirrus Insight pricing work with seat selection?

Cirrus Insight allows you to have full control over seat selection, meaning you can purchase different quantities of users for different features. For example, you could license 10 users for Email Sync and 5 users for Calendar Scheduling in the same account.

Source
Zcal: What do you pay for?

Team features, round robin and collective events, branding removal, custom fonts, SMS reminders and custom domains.

Zcal: Can I take payment for bookings?

Yes, through the Stripe connection at the point of booking.

Zcal: Does it do round robin?

Yes, on the paid tiers. Round robin and collective events are not on the free plan.

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