Simple Calendar
Add Google Calendar events to your WordPress site in minutes. Beautiful calendar displays. Mobile responsive.
The pitch, and what the numbers say
Simple Calendar – Google Calendar Plugin — Booking & events · https://simplecalendar.io/
No revenue figure: see why on the full x-ray.
Why users leave
The free diagnosis shows the top complaint. The full brief has every cluster, the build ideas and the buyers.
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”
What a challenger would build
Closest alternatives
Who is buying right now
No public buyer thread in the same market in the last 30 days. The scanner runs every 15 minutes.
Full 1-star breakdown with verbatim quotes, the build blueprint and every live thread — on every product.
How to read this
Sources: the product's public listing and reviews, its published price, and public forum threads. Revenue is an estimate unless marked verified by the founder; the formula and its inputs are on the full x-ray. Complaints are grouped by a language model and each quote is a verbatim excerpt, linked to the original review. Build difficulty is a model's reading of the listing and the complaints, not a measurement. Figures are a snapshot of Oct 30, 2026. Corrections: corrections.