Siemens
Neither CoConstruct nor STACK offers a free trial.
CoConstruct is designed for Freelancers, Medium Business and Small Business.
STACK is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for CoConstruct Starts at $99/Month whereas for STACK Starts at $2,499/User/Year.
Some top alternatives to CoConstruct includes Procore, UDA ConstructionOnline, Contractor's Office, Buildertrend, Corecon, BuildTools, iCore, Buildern and Buildr.
Some top alternatives to STACK includes and undefined.