1
ServeHub
Best free overall
Free forever · paid upgrades $20–$55/mo
ServeHub’s free plan covers the whole job: build an estimate, get it e-signed, schedule the work, invoice, and take a one-tap card payment — with unlimited team members and no credit card to start. Paid tiers add your own branding, SMS, AI tools, and an AI-built website.
Strengths
- Genuinely free forever — not a trial
- Unlimited users on every plan — no per-seat fees
- Estimate → contract → invoice → payment in one tool
Watch-outs
- Newer than incumbents, with fewer third-party integrations
- Branding, AI, and website are on paid tiers (Plus $20/mo, Pro $55/mo)
2
Connecteam
Best free for teams
Free tier for small teams · paid plans above
Connecteam leans toward workforce management — scheduling, time tracking, and team chat — and offers a free tier aimed at small teams. It’s strong for coordinating crews but lighter on quoting and invoicing, so many shops pair it with a billing tool.
Strengths
- Strong crew scheduling and time tracking
- Free tier aimed at small teams
- Polished mobile app for the field
Watch-outs
- Not built around estimates and invoicing
- Free-tier limits apply — verify current caps
3
Square Appointments
Best free for booking
Free for individuals · card processing fees apply
If your main need is online booking and taking card payments, Square offers a free plan for individuals and small teams with payment processing built in. Great for appointment-based services, but it isn’t a full estimate-to-invoice CRM.
Strengths
- Free online booking for solo and small teams
- Card payments built in
- Fast to set up
Watch-outs
- Not built for estimates or contracts
- Per-transaction processing fees
4
Workiz
Best free for dispatch trades
Limited free tier · paid plans for full features
Workiz targets dispatch-heavy trades — HVAC, plumbing, locksmith, appliance repair — with scheduling and call handling, and has offered a limited free tier for very small shops. Confirm the current free-plan limits, as they change.
Strengths
- Built for dispatch-heavy service trades
- Scheduling with caller ID / phone tools
- Has offered a limited free tier
Watch-outs
- Most advanced features are paid
- Free-tier caps change — verify before committing