Unbiased side-by-side comparison of verified reviews, user ratings, features, and pros/cons to help you decide which software fits your business needs.

In our 2026 comparison of Microsoft Outlook Calendar and Resource Guru, Microsoft Outlook Calendar comes out ahead overall (weighted score 91% vs 70% for Resource Guru). Microsoft Outlook Calendar is rated 4.5/5 from 70 user reviews; Resource Guru is rated 4.6/5 from 1 user review. Microsoft Outlook Calendar has a free plan; Resource Guru starts at $4.16/month with a free trial.
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| At a glance | Microsoft Outlook Calendar | Resource Guru |
|---|---|---|
| Category | Calendar & Scheduling | Calendar & Scheduling |
| User rating | 4.5/5 (70 reviews) | 4.6/5 (1 reviews) |
| Starting price | Free plan | $4.16/mo |
| Free trial | Not listed | Yes |
| Listed features | 17 | 6 |
| Integrations | 5 | — |
| Platforms | Web, iOS, Android, Windows, macOS | Web |
| Ease of use | 4.6/5 | 4.7/5 |
| Customer support | 4.6/5 | 4.5/5 |
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17/23 features
6/23 features
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Free calendar included with Microsoft accounts.
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Microsoft Outlook Calendar wins overall with a weighted score of 91% based on user rating, pricing, features, usability, and support.
Microsoft Outlook Calendar has the most accessible pricing ($0/mo (No Free Trial)).
Microsoft Outlook Calendar lists the most features (17 features).
Strong usability with a user rating of 4.6/5 stars.
Reliable support with a user rating of 4.6/5 stars.
Widest platform availability (5 Platforms: Web, iOS, Android, Windows +1 more).
Dimension scorecard
Resource Guru is a runner-up with a composite score of 70%.
Pricing: $4.16/mo (Free Trial), a less accessible entry point than the leader.
Offers 6 features (fewer than the category leader).
Strong usability with a user rating of 4.7/5 stars.
Reliable support with a user rating of 4.5/5 stars.
Available on 1 Platform: Web, fewer than the leader.

Microsoft Outlook Calendar scores higher across 5 of 11 key dimensions with a 21-point lead in our weighted analysis.
Microsoft Outlook Calendar scores higher across 5 of 11 key dimensions with a 21-point lead in our weighted analysis. The best choice still depends on your team's workflow, budget and required integrations — use the side-by-side sections above to check the details that matter to you.
Microsoft Outlook Calendar is rated 4.5/5 from 70 user reviews. Resource Guru is rated 4.6/5 from 1 user review. Ratings come from approved user reviews on SoftwareHope.
Microsoft Outlook Calendar has a free plan. Resource Guru starts at $4.16/month with a free trial. Always confirm current pricing on the vendor's site, as plans change.
Microsoft Outlook Calendar offers a free plan; Resource Guru offers a free trial.
Microsoft Outlook Calendar supports Web, iOS, Android, Windows and macOS; Resource Guru supports Web.
Microsoft Outlook Calendar has an ease-of-use rating of 4.6/5, Resource Guru has an ease-of-use rating of 4.7/5. The difference is small, so both are similarly easy to adopt.
Community-voted helpful feedback from verified users
After deploying Outlook Calendar as our enterprise scheduling standard, Copilot AI suggested three available time slots for our nine-person cross-functional review meeting within twenty seconds of our natural language request.
Following our executive assistant team configuration of Outlook delegate access, our field operations manager reviewed the complete week meeting schedule on Outlook mobile during a four-hour flight without any internet connection.
After deploying Outlook Calendar as our enterprise scheduling standard, a Teams meeting link appeared automatically on every new calendar event eliminating the manual copy-paste link workflow from our entire coordination team.
Following our executive assistant team configuration of Outlook delegate access, the view-only calendar share gave our five external agency partners visibility into our content calendar milestones without any edit access risk.
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