| Open-source | Yes (MIT license, auditable) | No | No | No | No | No | No |
| Local-first storage | Local database with optional sync | Cloud-based; local cache for offline use | Cloud-centric; seamless sync across devices | Microsoft cloud with account-based sync | Cloud-based; offline mode available (manual setup on free plans) | Cloud-based; desktop/mobile apps support offline tracking with later sync | Cloud-based; desktop/browser apps support offline tracking with later sync |
| Offline use | Full offline for tasks, timers, and notes (sync is optional) | Offline editing with later sync (requires prior login) | Primarily cloud-based; mobile apps typically cache tasks offline | Limited offline use; best experience requires a Microsoft account and sync | Offline mode for manually enabled pages; auto-download on paid plans | Offline time tracking with sync when online | Offline time tracking; new entries sync when online |
| Built-in time tracking | Yes – native timer + analytics | No (needs integrations) | Yes – Focus/Pomodoro timer with focus-time stats (not a full billing tracker) | No | No (needs Toggl, Clockify, or manual properties) | Yes (core feature) | Yes (core feature) |
| Pomodoro / timeboxing | Yes – integrated Pomodoro + timeboxing (calendar blocks) | No native Pomodoro; can be approximated via labels/filters + external tools | Yes – built-in Pomodoro/focus timer | No | No native Pomodoro; requires external tools or widgets | Yes – Pomodoro in desktop app/extension | Yes – Pomodoro timer plus focus-support features in desktop/browser apps |
| Integrations | GitHub, GitLab, Jira, Gitea, Redmine, OpenProject, CalDAV, Google Calendar, REST API, plugins, automations, MCP plugins | Extensive SaaS integrations | Productivity + calendar apps | Microsoft 365, Outlook, Planner, and Teams | Native synced databases for GitHub, GitLab, Jira, Asana (read-only) | Calendars, PM tools, Zapier | Calendars, PM tools, Zapier |
| Price | Free (optional sponsorship) | Subscription (per user) | Subscription (per user) | Free with Microsoft account | Free tier; paid for teams and advanced features | Subscription (per seat) | Free tier + paid seats |
| Privacy posture | No telemetry, data stays with you | Cloud-hosted; uses cookies and analytics as described in their privacy policy | Cloud-hosted; uses cookies and analytics as described in their privacy policy | Cloud-hosted in the Microsoft ecosystem | Cloud-hosted; uses cookies and analytics as described in their privacy policy | Cloud-hosted; uses cookies and analytics as described in their privacy policy | Cloud-hosted; uses cookies and analytics as described in their privacy policy |