Yes, both Stripe Billing and Customer.io offer a Free Trial.
Stripe Billing is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Customer.io is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Customer.io begins at $100/Month, while pricing details for Stripe Billing are unavailable.
Some top alternatives to Stripe Billing includes Stripe Payments, Invoiced, Chargebee, Square Invoices, Servicebot, BillingPlatform, Billbooks, ChimpCharge, Billin and Stripe Invoicing.
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.