Stripe
Yes, both Rock Paper Coin and Invoice Simple offer a Free Trial.
Rock Paper Coin is designed for Large Enterprises, Medium Business and Small Business.
Invoice Simple is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Rock Paper Coin begins at $20.83/Month when Billed Yearly, while pricing details for Invoice Simple are unavailable.
Some top alternatives to Rock Paper Coin includes SimpleTix, True Client Pro, Beau, Service Provider Pro, InvoiceCloud, Qualified, Checkeden, Clientpad, Invoice Simple, Workvivo, Qwoach and IFTTT.
Some top alternatives to Invoice Simple includes Quickbooks, Freshbooks, QuickFile, Invoice2go, Servicejoy, CloudBooks, QuickBooks Online Advanced, InvoiceCloud, Qualified, Workvivo and Invoice Maker by Saldo Apps.