Google Sheets helps new coaches track prospects, conversations, follow-ups, clients, referrals, content ideas, and proof without buying a CRM too early. It is an online spreadsheet app, so the setup can stay very simple: columns, rows, filters, dropdowns, dates, and notes.
For early-stage coaches, the most valuable use is not financial modeling or complex formulas. It is visibility. You can see who you talked to, what they care about, when you last followed up, and what the next respectful step should be.