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WordPress pluginwhat they say

Simple Calendar

Simple Calendar – Google Calendar Plugin

Add Google Calendar events to your WordPress site in minutes. Beautiful calendar displays. Mobile responsive.

★★★★☆3.8 (397) · 50k+ active installs
Free
Website ↗ WordPress.org ↗
what mrrlens sees
MRR · Freemium · upsell unknownPrice not published
Opportunity—
Buyer threads · 30 d0
“It keeps requiring re-authenticaation”
#1 complaint · Bugs/Reliability · 83% of complaints read · analysed Oct 29, 2026 · source

01Revenue

Price not publishedFreemium · upsell unknown
Why there is no estimate

Simple Calendar has a paid tier, but the listing publishes no price. Without one, any revenue figure would rest on a guessed price, so MRRLens shows none and leaves revenue out of its opportunity score.

Exploratory math, not an estimate: if it charged a typical price for its marketplace, active users × paid conversion × monthly price would give $2k–10k a month. Assumptions: active users: 50k; 0.5%–2.5% of active users pay; no public price: assumed $8.00/month, typical for this marketplace. Methodology.

2 daily snapshots · growth 30 d: —

Store data from the WordPress.org listing, refreshed daily. Updated 16 h ago. Listed since 2010.

02Why users leave Simple Calendar

5★63%
4★7%
3★4%
2★4%
1★23%
Bugs/Reliability5 reviews · 83%

Users report weekly Google re-authentication, events reverting to default blue, broken dates/UK formats, and plugin no longer working; support unresponsive.

“It keeps requiring re-authenticaation” source ↗
1 more complaint, with verbatim quotesIncluded in the day pass and Pro.
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Sample: 6 recent complaints (1–3★ reviews) · clustered Oct 29, 2026 · complaints from Sep 2018–Nov 2025, 17% in the last 24 months — mostly history · each review labelled by a model, quotes verbatim

03How to build a better Simple Calendar

Build difficultyMediumGoogle OAuth token refresh and Calendar API integration; responsive calendar UI; WordPress support expectations.
Three build ideas that answer these complaintsIncluded in the day pass and Pro.
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04Who wants a better Simple Calendar

0 buyer threads in the last 30 days name Simple Calendar.

05Questions about Simple Calendar

How much revenue does Simple Calendar make?

MRRLens shows no revenue figure for Simple Calendar. It sells a paid tier but does not publish the price, and an estimate built on an assumed price would be a guess. The exploratory math is on the page, labelled as such.

What do users complain about most in Simple Calendar?

Across 6 recent complaints, the most common is bugs/reliability (83%). Users report weekly Google re-authentication, events reverting to default blue, broken dates/UK formats, and plugin no longer working; support unresponsive.

What are the best Simple Calendar alternatives?

The closest alternatives MRRLens found are The Events Calendar, EventON and Events Manager. The full list, with why users leave, is on the Simple Calendar alternatives page.

How many people use Simple Calendar?

Simple Calendar lists 50k+ active installs on WordPress.org, rated 3.8 (397).

See the full x-ray of Simple Calendar

Full 1-star breakdown with verbatim quotes, the build blueprint and every live thread — on every product.