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Mollie Forms vs Spiffy Calendar (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

Mollie Forms

Mollie Forms

4.1(19)

3.0K+ active installs

Free

Updated 2 weeks ago
View Mollie Forms
VS
Spiffy Calendar

Spiffy Calendar

4.9(38)

3.0K+ active installs

Free

Updated 3 days ago
View Spiffy Calendar

Quick Verdict

As of April 2026, Spiffy Calendar has a higher user rating (4.9/5 from 38 reviews) while Mollie Forms leads in active installations (3.0K+ vs 3.0K+). Both are free WordPress plugins. Mollie Forms has accumulated 132K+ total downloads while Spiffy Calendar has 203K+.

Detailed Comparison

Rating
4.1/5Mollie Forms
►
Spiffy Calendar4.9/5
Total Reviews
19Mollie Forms
►
Spiffy Calendar38
Active Installs
3.0K+Mollie Forms
Spiffy Calendar3.0K+
Total Downloads
132K+Mollie Forms
►
Spiffy Calendar203K+
Support Resolution
N/AMollie Forms
Spiffy CalendarN/A
Last Updated
2 weeks agoMollie Forms
►
Spiffy Calendar3 days ago
First Released
2017Mollie Forms
Spiffy Calendar2012
Age
9 yearsMollie Forms
Spiffy Calendar14 years
WP Requires
6.0+Mollie Forms
Spiffy Calendar5.3+
PHP Requires
8.0+Mollie Forms
Spiffy Calendarfalse+
Business Model
FreeMollie Forms
Spiffy CalendarFree
Latest Version
2.9.2Mollie Forms
Spiffy Calendar5.0.9

Rating Breakdown

Mollie Forms

4.1/5(19 reviews)
5
68%
4
5%
3
5%
2
5%
1
16%

Spiffy Calendar

4.9/5(38 reviews)
5
89%
4
11%
3
0%
2
0%
1
0%

Recent Reviews

Mollie Forms Reviews

by Auke Piersma

A bit too many issues for me, other form plugins are better

A bit too many issues in the latest releases for me. I have also discovered that it is more convenient to use a more general forms plugin. So you can use your one forms plugin for contact and payment

by mdebeus

Works great for our youth/sportsclub

Thank you very much for this plugin. As a small local non-profit organization we do not have 1000s payments monthly, at most a 500 per year. We are using it for about 2 yrs now. Great solution for our

by Rovanov

What great plug-ins you guys build!!!

What great plug-ins you guys build!!!

Spiffy Calendar Reviews

by atallen

Great, has almost everything … but…

Great in design and function. Has almost everything… 😉Unfortunately, I’m still missing a multiple ICS import function.Then it would be perfect. Is this function planned for a future update…? atallen

by safrika47

Great and functional

A great calendar. It fulfills all my requirements. Great personal support too to solve “clashing” problems with other plugins.

by ANDREA CRENSHAW

AMAZING – BLESSING – MUST HAVE

I cannot say enough about this plugin! The support is soo amazing!! This plugin has solved many problems for many of my different client websites. The support is fast, personal, feels like you’re work

Frequently Asked Questions

Is Mollie Forms or Spiffy Calendar more popular?
Mollie Forms has 3.0K+ active installations while Spiffy Calendar has 3.0K+. Spiffy Calendar is the more widely-used plugin as of April 2026.
Which has better ratings — Mollie Forms or Spiffy Calendar?
Mollie Forms has a 4.1/5 rating from 19 reviews, while Spiffy Calendar has a 4.9/5 rating from 38 reviews.
Are Mollie Forms and Spiffy Calendar free?
Mollie Forms is free and Spiffy Calendar is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Mollie Forms or Spiffy Calendar?
Support resolution data is not available for all plugins. Check each plugin's WordPress.org support forum for current response quality.
Which plugin is updated more frequently?
Mollie Forms was last updated 2 weeks ago and Spiffy Calendar was last updated 3 days ago.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.