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Smooth Calendar

by Trevan Hetzel · Booking & Events

Also makes 1 other plugin · 30+ installs across the portfolio →

A simple and flexible calendar plugin.

⚠ Stale⚠ Likely abandoned⚠ Few reviews
How scoring works →
45 Health · D
Maintenance 3/100
Rating quality 74/100
Support 70/100

45 health vs 67 average across 980 Booking & Events plugins

High removal-risk signals

63/100

Maintenance and integrity signals that tend to precede a WordPress.org removal. Not an official status, a heads-up to act.

  • Long abandoned. No update in 10+ years — the top precursor to removal once a vulnerability is found.
  • Compatibility drift. Tested only up to WordPress 4.4.34, well behind 6.8.

Directory ranking optimization

How it's scored →

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

29 / 100

Under-optimized

Biggest win: Update recency

Update recency 0/100
WP compatibility 5/100
Rating quality 51/100
Listing tuning 68/100

To rank higher: Last updated 3849 days ago — ship an update; wp.org decays a listing's search weight after ~180 days.

Get the full rank-higher report →

Daily downloads

Since 2022-10-05 · 1,426 days · wp.org + Plugin Pulse archive

+22% vs prior 30d
1Downloads · Aug 26

30-day downloads

Rolling 30-day volume · peaks are release surges

61

now · peak 171

6130d downloads · Aug 26

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

Smooth Calendar · #26793 you The Events Calendar · #94 Events Manager · #624 WP Event Manager · #1251

Update activity

How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.

3Kper 1k installs · Aug 26

Release cadence

No release in a year
from wp.org release tags

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

0

releases in the last 12 months

10.5y ago

latest release · vv1.2.1

7

tagged releases on record

Recent releases

v1.2.1 · 10.5y agov1.2.0 · 10.5y agov1.1.7 · 10.7y agov1.1.6 · 10.7y agov1.1.5 · 10.7y agov1.1 · 10.7y agov1.0 · 10.7y ago

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin · 100% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v1.2 100%

Estimated active installs

The public count shows “20+”. Our estimate pins where the real number sits.

tracked estimate
20–30 ≈29

Refined from the date this plugin crossed into its current band.

Install history · since 2019-09-18 · 1,387 observations

20Installs · Aug 26

Estimated value

What this plugin might earn a year, and what it might sell for. Modeled from public signals; we don't see anyone's books.

Est. annual revenue

N/A

Est. acquisition value

N/A

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price. A small install base leaves thin data to model from.

Details

Version
1.2.1
Last updated
10.5y ago
Added
2015-12-07 · 10 yrs old
Requires WP
4.3
Tested up to
4.4.34
Requires PHP

Recent reviews

All reviews on wp.org ↗
  1. aliceralph
    10.6y ago

    I’ve been really impressed with this plugin. It’s lightweight, runs smoothly and does what it says on the tin. Also very easy to customise with CSS. My only suggestion would be that it would be great if the Description could be a WYSIWYG so that users can add links etc and more extended descriptions. Also it would be great to include a featured image for events that could appear upon hover, and on the individual event listings. All in all this is a really good option for projects that need a simple, easy to use events calendar but don’t require the complex functionality of the premium calendar plugins out there.

    Read on wp.org ↗

Behavioral tests

via WP Hive

Automated install-time checks, tested on PHP 7.2.16 · WP 5.3.2

Low memory footprint
Low page-speed impact
Runs on latest PHP + WP
No PHP errors
No JS errors
Activates cleanly
No resource errors
No external HTTP errors
Optimized database use
Frequently updated

Languages

via translate.wordpress.org

Translated into 53 languages, 9 at 90% or more · development strings

German 100%
German (Formal) 100%
Japanese 100%
Slovak 100%
Spanish (Chile) 100%
Spanish (Mexico) 100%
Spanish (Spain) 100%
Spanish (Venezuela) 100%
Ukrainian 100%
Russian 44%
Swedish 44%
Romanian 38%
English (Australia) 33%
English (UK) 27%
Finnish 27%
Croatian 22%
Dutch 22%
Esperanto 22%
French (France) 22%
Italian 22%
Albanian 16%
Azerbaijani 16%
Basque 16%
Czech 16%

Plus 29 more locales with partial translations.

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

  1. 2024-09-03 30+ → 20+ down after 20 days in tier
  2. 2024-08-14 20+ → 30+ up after 19 days in tier
  3. 2024-07-26 30+ → 20+ down after 597 days in tier
  4. 2022-12-07 20+ → 30+ up after 5 days in tier
  5. 2022-12-02 30+ → 20+ down

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

Compare head to head →

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Preview card ↗

Smooth Calendar: 20+ active installs, 5.0★ (1 reviews). Plugin Pulse (WP Mayor), as of 2026-08-31. https://plugins.wpmayor.com/plugin/smooth-calendar