Side-by-side comparison · 24 data points
Book meetings quickly and easily with HubSpot and Outlook Calendar.
| Outlook Calendar | Referral Rock | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | — | — |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated | — | — |
| Metric | Outlook Calendar | Referral Rock |
|---|---|---|
| Rating | 3.4 ★ | ★ 4.0 ★ |
| Total reviews | ★ 1.5k | 7 |
| Active installs | 139,727+ | 429+ |
| Free plan | — | — |
| Pricing | ★ From $5/mo | From $175/mo |
| Pricing tiers | ★ 3 tiers | 2 tiers |
| Listed since | Jan 2019 | Mar 2019 |
Based on the data on this page, Referral Rock is the stronger choice for most HubSpot App Marketplace teams — 4.0★ vs Outlook Calendar's 3.4★ is a meaningful gap that usually reflects real product or support quality differences across the user base.
Pricing differs significantly: Outlook Calendar at From $5/mo vs Referral Rock at From $175/mo (Referral Rock is roughly 35.0x the entry-tier cost of Outlook Calendar). The pricier tier typically signals deeper feature coverage or higher capacity ceilings; confirm the gap matches your actual feature requirements before treating cost as the deciding factor.
Outlook Calendar has the larger user base (1,545 reviews vs 7), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Referral Rock's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat.
Recommended by size: small/early-stage teams who need fast install and low risk should default to Referral Rock; mid-market and enterprise teams with specific feature requirements should evaluate both — Outlook Calendar's 1,545-review base may include the workflow context that matches your specific use case better than Referral Rock's broader-but-shallower coverage.
This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical HubSpot App Marketplace listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: Outlook Calendar audit • Referral Rock audit
Both Outlook Calendar and Referral Rock offer paid plans only. Outlook Calendar starts at From $5/mo; Referral Rock starts at From $175/mo. Compare the per-tier features in the Pricing section above before committing.
Referral Rock has the higher average rating (4.0★ from 7 reviews) compared to Outlook Calendar (3.4★ from 1,545 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.
Referral Rock holds the higher average rating (4.0★ vs 3.4★). That is the one dimension AppRanks can separate them on here — read both apps' detail pages for the feature breakdown and recent listing changes.
Both apps are one-click installs from the HubSpot App Marketplace. Outlook Calendar has the deeper published review base (1,545 vs 7), which often — though not always — accompanies better-tested setup docs. AppRanks doesn't measure setup time directly: read the recent reviews on each app's detail page for user-reported install experience.
Outlook Calendar typically suits early-stage and growth-mode teams based on its published review base (1,545 reviews). Referral Rock typically suits early-stage and growth-mode teams based on its published review base (7 reviews). A larger review base generally means the app has been exercised at scale — relevant if you are processing high volume or handling enterprise compliance requirements.
Migration support varies by app and category. Outlook Calendar and Referral Rock both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from Referral Rock" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.