Yes, both Substly and Per Diem offer a Free Trial.
Substly is designed for Large Enterprises, Medium Business and Small Business.
Per Diem is designed for Medium Business and Small Business.
The starting price of Per Diem begins at $20.75/Month when Billed Yearly, while pricing details for Substly are unavailable.
Some top alternatives to Substly includes and undefined.
Some top alternatives to Per Diem includes OneBill, Subill, MightyDash, ReCharge, ExplaraBiz, CostTeam, Equip, Sublytics, Nine and Subscriptione.