Yes, both Customer.io and Reply offer a Free Trial.
Customer.io is designed for Large Enterprises, Medium Business and Small Business.
Reply is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Customer.io Starts at $100/Month whereas for Reply Starts at $49/month when yearly.
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.
Some top alternatives to Reply includes Apollo.io, AroundDeal, CrankWheel, ZoomInfo Engage, Outreach, Groove, SalesLoft, VanillaSoft, ImagineSales, Adapt Engage, Salesvue, OutReachly by 500apps and SalesHandy.