BigTime vs Billables AI
A detailed comparison of BigTime and Billables AI covering features, pricing, integrations, strengths, and weaknesses to help you choose the right tool.
Quick Overview
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.
Billables AI
Automated Legal Timekeeping
Billables AI is an automated, AI-powered time-tracking platform focused on the legal industry. It runs passively in the background, capturing billable activity without start/stop timers, and integrates with daily work tools to detect work as it happens. The system uses machine learning to adapt to each user's billing patterns and writing style over time.
Feature Comparison
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
Billables AI Features
Automated passive time capture without start/stop timers
AI-powered client and matter matching
Auto-generated billing narrative descriptions
Per-user personalization via machine learning
Pre-bill review with AI-assisted quality assurance
Privacy controls allowing user review before sharing
Pricing Breakdown
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.
Billables AI
$39/user/month
$39 to $99 per user/month depending on features and seat count. Free trial available. Specific tier breakdown requires contacting sales.
Strengths & Weaknesses
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
Billables AI
Strengths
Reduces monthly billing admin from 8-12 hours to under 1 hour
Partner firms report capturing 10-30% more billable time
90% reduction in time spent writing narratives
Deep legal ecosystem integrations
Adaptive ML that gets smarter per-user over time
Legal Tech Breakthrough Awards 2024 winner
Weaknesses
Very early-stage product with few publicly cited customers
No independent reviews on G2 or Capterra
Opaque pricing tier breakdown
No mobile app available
Full value requires using supported integration tools
Questions about long-term viability as a seed-stage startup
Integrations
BigTime (10 integrations)
Billables AI (12 integrations)
Target Market
BigTime
Professional services firms: accounting, engineering, architecture, IT services, consulting, government contractors. 5 to 500+ employees.
Billables AI
Law firms from solo practitioners to mid-size, plus consultants and hourly billing professionals
The Verdict
Both BigTime and Billables AI are solid time tracking tools, but they serve different needs.
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.
Billables AI (Automated Legal Timekeeping) is best suited for law firms from solo practitioners to mid-size, plus consultants and hourly billing professionals. It starts at $39/user/month and offers 6 key features.
If neither tool quite fits your needs, consider comparing BigTime with TimeSentry or comparing Billables AI 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.