Yes, both Acuity Scheduling and Customer.io offer a Free Trial.
Acuity Scheduling is designed for Freelancers, Medium Business and Small Business.
Customer.io is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Acuity Scheduling Starts at $14/Month when Billed Yearly whereas for Customer.io Starts at $100/Month.
Some top alternatives to Acuity Scheduling includes Setmore, Calendly, Square Appointments, Scheduly, Vagaro, ClickBook, DaySchedule, Booking Social, Rezrva and Zoho Booking.
Some top alternatives to Customer.io includes Outgrow, ActiveCampaign, CleverTap, Moosend, Omnisend, ActiveTrail, Iterable, Hubspot Marketing Hub, Klaviyo, SendGrid, MailChimp, StreamSend, Adobe Marketo Engage and Contactspot.