GAIA vs Things 3
Things 3 is a beautifully crafted GTD task manager exclusive to the Apple ecosystem. GAIA goes further by adding proactive AI intelligence, cross-platform access, and deep integration across your entire digital workflow.
Things 3 from Cultured Code is widely regarded as the gold standard of Apple-native task managers. Its clean design, thoughtful GTD structure with Areas and Projects, and tight OS integration have earned it a dedicated following. But Things 3 is a task manager, not an AI assistant. It requires you to do all the thinking: capturing tasks, setting deadlines, and deciding what to act on. GAIA takes a fundamentally different approach. Rather than giving you a beautiful place to store your todos, GAIA actively creates them from your emails, connects them to your calendar, and executes multi-step workflows on your behalf, on every platform you use.
Feature Comparison
| Feature | GAIA | Things 3 |
|---|---|---|
| Core approach | Proactive AI assistant that manages email, calendar, tasks, and workflows across your entire digital life | Beautifully designed GTD task manager for manual capture, organization, and review |
| Platform | Web, desktop (macOS, Windows, Linux), mobile (iOS, Android), CLI, and bots | Apple ecosystem only: Mac, iPhone, and iPad. No web, Windows, Android, or Linux version |
| AI capabilities | Natural language task creation, semantic search, context-aware prioritization, and autonomous workflow execution | No built-in AI. Task creation, organization, and review are entirely manual |
| Email integration | Full Gmail management: triages inbox, drafts context-aware replies, and automatically creates tasks from emails | No email integration. Tasks from emails must be created manually via the Things mail-to feature |
| Automation | Natural language multi-step automations that span email, calendar, tasks, Slack, Notion, GitHub, and more | URL scheme and Shortcuts support for scripted workflows, but no autonomous or AI-driven automation |
| Cross-tool integrations | MCP integrations including Gmail, Slack, Notion, GitHub, Linear, and more | Limited to Apple Reminders, Calendar import, mail-to capture, and community-built Shortcuts |
| Calendar integration | Google Calendar integration for scheduling, meeting preparation, and linking calendar events to tasks | Read-only display of calendar events alongside tasks in Today view. No two-way sync or scheduling actions |
| Source-available | Source-available (PolyForm Noncommercial) and self-hostable for complete data ownership | Proprietary closed-source application |
| Pricing model | Hosted: paid plan at $30/month; self-hosting free for non-commercial use (plus your own model API costs) | Paid plans only, no free tier; one-time purchase options. |
Why Choose GAIA
- +Works on every platform including Windows, Linux, Android, and the web: not limited to Apple devices
- +AI proactively creates tasks from emails, calendar events, and messages so nothing falls through the cracks
- +Deep integrations allow GAIA to orchestrate work across your entire tool stack, not just a standalone app
- +Natural language automations eliminate repetitive manual workflows without scripting or Shortcuts setup
- +Source-available and self-hostable for teams and individuals who require data sovereignty
- +Graph-based persistent memory connects tasks to context: projects, meetings, people, and deadlines
Where Things 3 Excels
- +Exceptional design polish and intuitive GTD structure with Areas, Projects, and Headings
- +One-time purchase model with no recurring subscription cost
- +Deep Apple ecosystem integration including Siri, Widgets, Apple Watch, and system Reminders sync
- +Offline-first with reliable syncing via Things Cloud: no server dependency for core functionality
The Verdict
Choose Things 3 if you use only Apple devices, prefer a one-time purchase, and want a focused, beautifully designed GTD task manager where you control every capture and review decision. Choose GAIA if you want an AI assistant that proactively manages your tasks, email, and calendar across every platform you use: doing the work of capturing, prioritizing, and executing rather than simply storing your todos.
Frequently Asked Questions
Looking for the best Things 3 alternative? See our complete guide → Best Things 3 Alternative in 2026
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