The verdict
If a contract, form or agreement is the heart of the process, pick airSlate. If the work is a set of steps done by several people, such as onboarding a client or a new hire, pick Process Street. It also suits teams who need proof that each step was done.
For a solo operator with a few checklists, both may be more than you need. Process Street has no free plan, only a trial on its Pro plan. airSlate pricing is by quote.