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Software · head to head

GanttPRO vs Slack

GanttPRO logo

GanttPRO

Software

Online Gantt chart software

From
On request
Rated
-
Full reviewWebsite
Slack logo

Slack

Software

Where work happens

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Slack has a free tier, so it costs nothing to try first.
  • Each has a real cost: GanttPRO workload management, portfolios, reports and budget planning all require the Business plan at $17 per user per month; Slack 90-day message history limit on free plan results in important conversations disappearing
  • They diverge on capability: GanttPRO covers Gantt charts, Slack covers Channels.

Where they differ

Only the attributes on which GanttPRO and Slack actually diverge.

Attributes where GanttPRO and Slack differ
AttributeGanttPROSlack
Starting priceOn requestFree
Pricing modelsubscriptionUnknown
Free tierNoYes
PlatformsWebWeb, iOS, Android, macOS, Windows, Linux
Founded20152009

Identical on both: user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in GanttPRO

  • Gantt charts
  • Resource management
  • Time tracking
  • Dependencies
  • Export
  • Slack
  • SSL encryption
  • Web support

Only in Slack

  • Channels
  • Direct messaging
  • Voice & video calls
  • Screen sharing
  • File sharing
  • Search
  • Workflow builder
  • Slack Connect

Both cover

  • Jira
  • Google Drive

What people use each for

The jobs each tool is most often brought in to do.

GanttPRO

  • Building Gantt chart schedules with auto scheduling and dependenciesnot Slack
  • Planning resources and budgets against a project timelinenot Slack

Slack

  • Team communicationnot GanttPRO
  • Project coordinationnot GanttPRO
  • Customer supportnot GanttPRO
  • Remote worknot GanttPRO
  • Cross-functional collaborationnot GanttPRO

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

GanttPRO

  • Workload management, portfolios, reports and budget planning all require the Business plan at $17 per user per month
  • SAML SSO, custom roles and API access are Enterprise only at $25 per user per month
  • The Enterprise plan carries a 5 user minimum and requires an annual subscription
  • Custom fields and calendar view are excluded from the entry Core plan
  • Every published rate assumes annual billing, which the vendor prices 20% below monthly

Slack

  • 90-day message history limit on free plan results in important conversations disappearing
  • Per-user pricing becomes expensive quickly for larger teams
  • Notification overload with 78% of employees feeling overwhelmed by notifications
  • Mobile app performance issues including lag and slow syncing
  • Huddles limited to 50 people and cannot be recorded
  • Requires dedicated video conferencing service for formal meetings and webinars

Pricing, plan by plan

GanttPRO

On request
  • Basic$7.99/month
    • 1 project
    • Gantt charts
    • Dependencies
  • Pro$12.99/month
    • Unlimited projects
    • Resource management
    • Time tracking

Slack

Free

No published plan breakdown. See the Slack review.

Which should you pick?

Choose GanttPRO if

  • You need gantt charts.
  • You also want resource management.
GanttPRO review

Choose Slack if

  • You need channels.
  • You want to start without paying.
  • You work on Web, iOS, Android, macOS, Windows, Linux.
  • You also want direct messaging.
Slack review

Questions people ask

Is GanttPRO or Slack better?
Neither clearly leads. GanttPRO starts at On request and Slack at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GanttPRO or Slack?
Slack has a free tier; the other does not. Paid plans start at On request for GanttPRO and Free for Slack.
Does GanttPRO or Slack run on more platforms?
GanttPRO runs on Web. Slack runs on Web, iOS, Android, macOS, Windows, Linux.
Can I use Slack for free?
Yes. Slack has a free tier, so you can try it without paying. GanttPRO starts at On request.
What is GanttPRO best used for?
GanttPRO is most often used for building gantt chart schedules with auto scheduling and dependencies, planning resources and budgets against a project timeline. Of those, building gantt chart schedules with auto scheduling and dependencies and planning resources and budgets against a project timeline are not what Slack is typically brought in for.
What can GanttPRO do that Slack cannot?
GanttPRO covers Gantt charts, Resource management, Time tracking, Dependencies. Slack covers Channels, Direct messaging, Voice & video calls, Screen sharing. Both handle Jira, Google Drive.

Answered from the vendors’ own pages

Slack: Does Slack have a free plan?

Yes, Slack offers a free plan indefinitely with no credit card required. Free users get 90-day message history, up to 10 app integrations, and 1:1 huddles.

Source
Slack: What are Slack's pricing plans?

Slack offers Free, Pro ($7.25/user/month with annual billing), Business+ ($12.50/user/month), and Enterprise Grid (custom pricing). Monthly billing costs approximately 20% more than annual.

Source
Slack: Does Slack support offline use?

Slack is a cloud-based platform and does not support robust offline work. Internet connectivity is required to access messages and collaborate.

Source
Slack: What integrations does Slack support?

Slack integrates with 43+ apps on average per team, including Google Drive, ChatGPT, Vercel, Asana, GitHub, and many others through their app marketplace.

Source
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Related pages

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