Yes, both DronaHQ and A2Zapps offer a Free Trial.
DronaHQ is designed for Large Enterprises, Medium Business and Small Business.
A2Zapps is designed for Individuals, Large Enterprises, Medium Business and Small Business.
The starting price of A2Zapps begins at $1/Month, while pricing details for DronaHQ are unavailable.
Some top alternatives to DronaHQ includes LiveCode, Planet Crust, Appup by 500apps, Simplifier, DOCOVA, Netcall Liberty Create, Flowfactory, DrapCode, SDMT LCAP/LCNC Platform and Noodl.
Some top alternatives to A2Zapps includes AppElixir, Nwicode, GitHub, Apphive, Native, 2OS App Builder, AppMaster.io and Codeless.