Neither Taskwall nor I'm Productive offers a free trial.
Taskwall is designed for Individuals, Freelancers, Medium Business and Small Business.
I'm Productive is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Taskwall Starts at $5/User/Month whereas for I'm Productive Starts at $50/Month.
Some top alternatives to Taskwall includes Todoist, Wrike, Smartsheet, Teamwork, ProjectManager.com, Watchwork, Trackboard, I'm Productive, ProgressBoard, Today, ClickUp, Atomicly and SmartTask.
Some top alternatives to I'm Productive includes Quickbase , Smartsheet, ClickUp, Visor, Zoho Projects, Freshbooks, Next Please, Wrike, monday.com, Teamwork, ProWorkflow, Workep, Worksuite, Watchwork, WirTask, Trackboard, Quick Base, Today, Flowist and Resource Guru.