Most agencies start with Google Sheets for client management — it is free, everyone knows it, and it works fine for 3 to 5 clients. As client count grows and the need for structured relationships, automated workflows, and client portal integration emerges, Google Sheets starts to show structural limitations. The decision to move to Airtable is usually driven by one of three specific pain points.
The Three Limitations That Drive the Switch
Linked records are the first. In Google Sheets, a client's projects are managed in a separate tab, manually cross-referenced. In Airtable, each project record is linked to the client record — clicking a client shows all their projects, invoices, and deliverables in one view. The second pain point is per-user views. Airtable allows each team member to have a filtered view of only their clients, without hiding data from others or creating separate sheets. The third is API access. Airtable's API is mature and well-documented, making it the preferred backend for Softr portals, Make.com automations, and n8n workflows.
When Google Sheets Is Still the Right Tool
For agencies with fewer than 5 clients, no need for client portal access, and no automation beyond simple notifications, Google Sheets is adequate and free. Softr also supports Google Sheets as a backend (in addition to Airtable), so a portal can be built on Sheets data — though the linked record functionality is more limited. For agencies planning to build the full automation stack demonstrated in the client portal demo, Airtable is the better foundation.