Ajax vs BigTime
A detailed comparison of Ajax and BigTime covering features, pricing, integrations, strengths, and weaknesses to help you choose the right tool.
Quick Overview
Ajax
AI-Powered Legal Timekeeping
Ajax is an AI-powered time tracking tool designed specifically for mid-sized law firms using Clio. It uses passive desktop and mobile screen monitoring to capture billable activities including emails, calls, chats, and calendar events, then generates polished billing narratives with automatic matter code assignment.
BigTime
Professional Services Automation
BigTime is a professional services automation platform offering unified time and expense tracking, flexible billing and invoicing, AI-driven resource management, and real-time dashboards. It is purpose-built for professional services firms including accounting, engineering, architecture, IT services, and consulting.
Feature Comparison
Ajax Features
Passive desktop and mobile screen monitoring
AI-generated billing narratives
Automatic matter code assignment via semantic AI
Kanban-style review board producing 10-20 polished entries per day
Entry generation in approximately 30 seconds
Privacy controls with pause button and monthly data auto-deletion
BigTime Features
Unified time and expense tracking
Flexible billing supporting time and materials, fixed fee, retainer, and blended rates
AI-driven Smart Staffing for resource management
Real-time dashboards and financial forecasting
Customizable standard and advanced reporting
Data Hub for BI integration with Power BI and Tableau
BigTime Wallet built-in payment processing
Project budgeting at company, project, or task level
Pricing Breakdown
Ajax
Contact sales
Custom pricing only. No publicly listed tiers. Sales-driven model with 14-day pilot programs. One firm reported $1,700/month in added billables per timekeeper.
BigTime
$20/user/month
Essentials: $20/user/month. Advanced: $35/user/month. Premier: $45/user/month. Projector: $60/user/month. All billed annually. 14-day free trial.
Strengths & Weaknesses
Ajax
Strengths
Comprehensive activity capture across all work surfaces
Sophisticated semantic AI matching
High user satisfaction with 97% pilot-to-customer conversion
12% average billable hour increase (up to 42-61% reported)
SOC 2 Type I certified
Purpose-built for Clio integration
Weaknesses
Continuous screen monitoring raises privacy concerns
Very young and small company (8 employees, founded 2022)
No public pricing transparency
Limited independent reviews available
Narrow integration ecosystem focused primarily on Clio
No presence on G2 or Capterra review platforms
BigTime
Strengths
Intuitive interface with high ease-of-use ratings
Excellent customer support rated 4.7/5 on Capterra
Strong QuickBooks integration
Comprehensive flexible billing supporting multiple project types
Robust reporting capabilities
SOC 2 Type 2 certified with bank-level encryption
Weaknesses
Mobile app is less polished and reliable than desktop
Steep learning curve for complex approval workflows
Occasional syncing issues between modules
Limited invoice formatting customization
Confusing terminology can cause implementation errors
Issue resolution for invoicing problems can be slow
Integrations
Ajax (2 integrations)
BigTime (10 integrations)
Target Market
Ajax
Mid-sized law firms (20-150 timekeepers) using Clio
BigTime
Professional services firms: accounting, engineering, architecture, IT services, consulting, government contractors. 5 to 500+ employees.
The Verdict
Both Ajax and BigTime are solid time tracking tools, but they serve different needs.
Ajax (AI-Powered Legal Timekeeping) is best suited for mid-sized law firms (20-150 timekeepers) using clio. It starts at Contact sales and offers 6 key features.
BigTime (Professional Services Automation) is best suited for professional services firms: accounting, engineering, architecture, it services, consulting, government contractors. 5 to 500+ employees.. It starts at $20/user/month and offers 8 key features.
If neither tool quite fits your needs, consider comparing Ajax with TimeSentry or comparing BigTime with TimeSentry. TimeSentry offers AI-powered time capture from 20+ integrations, built-in invoicing, multi-company workflows, and dedicated onboarding support.
The TimeSentry Guarantee
Free 7-day trial with full access to every feature. No credit card required.
White-glove onboarding so your team is set up correctly from day one.
AI that learns your patterns and gets more accurate the longer you use it.
Cancel anytime with no contracts, no lock-in, and no hidden fees.
Dedicated support from real humans who respond within hours, not days.
Need something better than both?
TimeSentry combines the best of AI-powered time tracking with built-in invoicing, multi-company workflows, and 20+ integrations. Try it free and see for yourself.