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The Gantt chart app you
buy once and own.

A fast, powerful desktop Gantt chart app. Buy once, use forever. No subscription, no cloud, no monthly fee. Works fully offline, with your files on your own machine.

Get GanttOWN → See it in action → See features
Mac (Intel & Apple Silicon) · Windows coming soon · Works on SharePoint & network drives · Import from Excel & MS Project

🖥 GanttOWN is a desktop app for Mac. Have a look around. When you're ready, open this page on your Mac to grab it.

Features

Everything you need. Nothing you don't.

🖱
Drag & Drop Scheduling
Drag bars sideways to change dates, up and down to reorder, or diagonally to do both. Made a mistake? Undo and redo up to 100 steps.
🗂
Phases
Group tasks under a phase. The phase bar spans its tasks and shows their combined progress. Collapse one phase or all of them, and indent with Tab.
🔗
Dependencies with Lag
A task can't start until its predecessors finish, and late work pushes everything after it. Add lag in working days, and click any arrow to edit or remove it.
⚡
Critical Path
Automatically highlights the tasks that determine your project end date, recalculated on every change.
◆
Milestones & Baselines
Track key dates on the timeline and flag overdue milestones. Snapshot your original schedule, then ghost bars and slip badges show where you've drifted.
📅
Workday Calendar
Hide weekends so Friday sits next to Monday, and mark your own holidays. Tasks keep their length in working days, and dependencies respect your calendar.
🧩
Templates
Start from five built-in plans (website launch, product launch, event, marketing campaign, home renovation) on any start date, or save your own. Duplicate any project to a new date.
📥
Import from Excel & MS Project
Bring in plans from Excel, CSV or Microsoft Project XML, with phases, owners, progress, dependencies and milestones intact.
📄
PDF Reports Anyone Can Read
Page one is a plain-English summary: status, percent complete, phases, key milestones and what's coming up next. Then a schedule table beside the timeline. Also print, PNG and Excel export.
🔍
Find, Filter & Zoom
Search by task or owner, filter by status or critical path, and zoom from the whole project down to single days. Jump to today in one click.
🎨
Light or Dark, Your Colors
Switch between dark and light themes. Pick from 18 colors, a color-blind safe palette, or your own custom colors.
❓
Built-in Help
A searchable, step-by-step guide inside the app, with Try it buttons that take you straight to each feature. A chart key explains every symbol.
🔒
Role-Based Access
PM and member roles with password protection. Members can update progress and request date changes.
📓
Project Log
A shared running log for the whole team. PM messages are visually distinguished from member entries.
📬
PM & Member Inboxes
On login, PMs and members each get a personal inbox: new notes, completed tasks, pending approvals, and resolved date requests, all in one place. See what changed without digging through the chart.
📊
Status Dashboard
A one-screen read on project health: total tasks, completion rate, schedule health, milestone status, and pending approvals at a glance. Know exactly where things stand without scrolling the chart.
🛡
Full Audit Trail
Every action timestamped and attributed: date changes, approvals, completions, even failed logins. A complete, PM-only record of who did what, and when.
💾
Works Everywhere
A self-hosted, offline Gantt chart: open and save .gantt files on local drives, network shares, SharePoint, or OneDrive. Double-click a .gantt file in Finder to open it. No server required.

Built for real project teams

Built for teams tired of SaaS pricing

🏗 Construction

Track subcontractors, phases, and inspections without paying per seat every month.

💻 IT & Software

Sprint planning and release schedules that live in your repo alongside your code.

📣 Marketing

Campaign timelines and launch plans your whole team can view without needing an account.

🏢 Operations

Any team that needs a shared schedule without the overhead of enterprise project software.

Pricing

Pay once. Use forever.

Have a browse. GanttOWN runs on Mac, so head there when you're ready to buy.

Solo
For freelancers and small teams who just want to schedule, with no roles and no approvals.
$49 one-time
Up to 5 team members
  • Full Gantt chart with drag & drop
  • Critical path & dependencies
  • Milestones & baseline tracking
  • PDF & Excel export
  • Task notes & comments
  • Up to 5 members: everyone edits directly, no approvals
  • Lifetime bug & security fixes (no new features)
Buy Solo · $49
Business
For larger teams and organizations.
$299 one-time
Up to 150 team members
  • Everything in Team
  • Up to 150 members across projects
  • Department-wide deployment ready
  • PM & member roles with full access control
  • Date change requests & approval workflows
  • PM-to-member messaging via task notes
  • Project log & full audit trail
  • Future feature updates included
  • Priority support
Buy Business · $299
SoloUp to 5 people
$49
BusinessUp to 150 people
$299

One-time purchase, no subscription. Solo includes lifetime bug fixes. Team & Business also get all future feature updates. The full feature breakdown and checkout live on your Mac.

🛟
Not sure GanttOWN is for you? Try it risk-free.

Every purchase comes with a full refund window of 14 days. Buy it, put it to work on a real project, and see if it fits how your team actually plans. If it isn't the right tool for you, just email [email protected] and we'll process your refund within 24 hours. No forms, no questions, no hassle.

Solo includes lifetime bug & security fixes · Team & Business also receive all future feature updates · Secure checkout via Lemon Squeezy · Instant download after purchase
🪟 Windows Version

Mac users are already owning their schedules.

GanttOWN for Windows is in the works. Drop your email and we'll notify you the day it drops. No spam, just one email.

No spam · One email when Windows ships · Unsubscribe anytime

Common questions

Does it really work without the internet?
Yes. GanttOWN is a native desktop Gantt chart app that works completely offline once installed. Your project files are saved locally. No cloud sync, no account required after activation.
Does GanttOWN ever need an online connection?
Only in two situations: when downloading updates, and when activating or deactivating a license. Everything else (opening, editing, and saving your projects) works entirely offline. So you'll want to be connected the first time you set up a license or move it to another machine, but your day-to-day work never needs the internet.
What does "one-time purchase" mean exactly?
You pay once and own the software. There are no monthly fees or renewal charges. Solo includes lifetime bug and security fixes. Team and Business also receive all future feature updates as they're released, at no additional cost.
Can my team collaborate on the same file?
Yes. Save your .gantt file to a shared network drive, SharePoint, or OneDrive. Team members open it directly. No server setup required. File locking prevents simultaneous edits.
What's the difference between the tiers?
The tiers differ in both team size and collaboration features. Solo supports up to 5 members and is ideal for individual PMs. Team (up to 20) and Business (up to 150) unlock the full collaboration suite: PM and member roles with separate passwords, member inboxes, date change request and approval workflows, PM-to-member messaging, project log, and a full audit trail.
Mac or Windows?
Mac is available now as one universal app that runs natively on both Intel and Apple Silicon Macs. Windows is in active development. Join the waitlist and we'll email you the day it ships. Your license key will work on either platform, so buying today covers you for both.
Can I import my existing plans?
Yes. GanttOWN imports Excel (.xlsx and .xls), CSV and Microsoft Project XML files, bringing across phases, owners, progress, dependencies and milestones. You can export to Excel, PDF or a sharp PNG image, or print straight from the app.
Does it support phases and dependencies?
Yes. Group tasks into phases that show their combined progress and collapse with one click. Link tasks with dependencies (with optional lag in working days) so late work pushes everything after it, and the critical path is highlighted automatically. Schedules can skip weekends and holidays.
Is there a trial, or can I get a refund?
Instead of a limited trial, you get the full app with a 14-day refund window. Buy any tier, use every feature on a real project, and if it isn't right for you, email [email protected] within 14 days. We process refunds within 24 hours, no questions asked.
What if I need help?
Email us at [email protected]. We're a small team and we actually respond.

Where GanttOWN is at

1.0 Launch
The first public release of GanttOWN: full drag-and-drop Gantt scheduling, critical path, milestones, baselines, role-based access, the audit trail, and PDF & Excel export.
1.0.1
Early post-launch fixes and stability improvements.
1.0.2
Scheduling and dependency-cascade refinements.
1.0.3
PDF & Excel export polish.
1.0.4
Inbox and approval-workflow improvements.
1.0.5
Workday calendar and date-handling fixes.
1.0.6
Licensing and activation refinements.
1.0.7
Stability and polish across the board.
1.0.8
Stability and polish improvements.
1.0.9
One universal Mac app: a single download that runs natively on both Intel and Apple Silicon.
1.0.10 Current
Released Oct 30, 2026. The biggest update yet: phases, drag to reorder, dependencies with lag and clickable arrows, weekend-free working-day scheduling, undo and redo, five built-in templates, import from Excel, CSV and Microsoft Project, plain-English PDF reports, find and filter, zoom to fit, a light theme, a color-blind safe palette, a chart key, What's New, and a searchable in-app help guide. Plus fixes for copy and paste, keyboard shortcuts, and dates around daylight saving changes.

Support continues for all tiers for the lifetime of the app.