You don't need expensive software. The AI tools that save contractors the most time are free. Here's the full stack.
1. ChatGPT
Free at chat.openai.com
The main tool. Write anything: follow-up texts, estimate cover letters, review responses, safety briefings, job descriptions. If you only use one tool on this list, make it this one.
2. Otter.ai
Free (300 min/month) at otter.ai
Voice to text. Record your site visit notes, Otter transcribes them, you paste into ChatGPT to generate an estimate draft. Cuts estimating time from hours to 20 minutes.
3. Zapier
Free tier (100 tasks/month) at zapier.com
Automation. Connect your tools. Example: job marked complete in CRM → review request text fires automatically. New form submission → instant response text. No code required.
4. Google Gemini
Free at gemini.google.com
Alternative to ChatGPT, built into Gmail and Google Docs. If you already use Google Workspace, Gemini drafts emails inside Gmail with one click.
5. Canva AI
Free basic plan at canva.com
Job photos into professional social posts. Before/after templates, door hanger flyers, simple branding. No design skills needed.
How They Work Together
- Site visit → Otter.ai records → ChatGPT generates estimate draft
- Job complete → Zapier triggers review request text
- Job photo → Canva creates social post → ChatGPT writes caption
- New lead form → Zapier sends auto-response in 2 minutes
Total monthly cost: $0.
Get the Prompts That Make These Tools Work
The Contractor's AI Playbook has 30 copy-paste prompts optimized for this free stack. Any trade.
Get the Playbook — $47