At a glance
Try a workflow tool when you need to connect existing applications. Consider custom software when staff also need screens, records, or approval rules those applications cannot provide. Test the required integrations and failure cases before deciding.
What to compare
Scroll the table to see all columns.
| Starting point | A good reason to test it | Question to resolve |
|---|---|---|
| Zapier | Your existing apps expose the exact trigger and actions you need | How many billable actions will each record produce? |
| n8n | The workflow needs detailed branching or API work, and someone can maintain it | Who maintains it, and which plan includes the controls you need? |
| Custom application | Staff need a shared queue with business-specific rules and history | What belongs in the application, and what can stay in existing tools? |
Check the exact integration
For a customer enquiry, you might need to match an account, create a job, and email its owner. Check that each connector supports the fields and actions you need. Being listed as an integration doesn’t guarantee it can update your custom fields.
Test an enquiry that matches two accounts. Someone needs to choose the right one. Where will they do that, and can a colleague see it has been handled?
Compare usage costs
Zapier generally charges tasks for successful actions. Triggers and some built-in steps are excluded, while certain actions have different charging rules. Check the task-usage documentation for your planned steps.
For example, 1,000 records passing through three actions that each cost one task use 3,000 tasks. Replays and extra branches can add to that.
n8n counts a run of an entire workflow as an execution. Compare your expected runs with its plan limits. Processing records in batches and starting a separate run for each record produce different usage.
Include charges from connected services, such as AI models or messaging providers. They may bill separately.
Test a failed run
Suppose the job is created but the email fails. Repeating every step could create a duplicate job. Check whether the tool can resume at the failed step.
Zapier distinguishes failed-step replay from full replay. A full replay repeats successful steps and can use more tasks. See its replay guide.
Also test a timeout. The destination may have saved the record without returning confirmation. A stable request reference can help prevent duplicates if the destination supports it. Stripe’s idempotency keys are one example; check the rules for each system you connect.
Assign maintenance
n8n offers Cloud and self-hosted options. With self-hosting, your team manages the infrastructure and maintenance. Some features require a paid plan. Check the deployment options and name who will handle updates, backups, and failures.
Self-hosting does not keep all data local. A workflow that calls an external AI service still sends information to that service.
When custom software makes sense
First check whether your existing software can give staff the review queue, permissions, and history they need. If it can, you may only need an integration.
Consider a custom application when a required process still needs repeated workarounds. For example, approvals might depend on the account, amount, and previous revision. The application can manage those decisions while a workflow tool handles notifications.
Before choosing, run an ordinary record, a duplicate, a missing value, and a failed request through the proposed setup. Check the final records, usage charges, and time spent fixing problems. Have someone other than the builder try the recovery steps.