Head-to-Head Comparison · Alternative to Calday · 📅 scheduling
Calday vs Easy!Appointments
A proper provider-and-service booking system, provided you will also become its PHP and MySQL caretaker. Here is how Easy!Appointments ($0/mo open source) stacks up against Calday (paid subscription) across cost, hosting, data privacy, and real-world trade-offs.
Easy!Appointments
$0.00/mo · GPL-3.0
Calday vs Easy!Appointments Specification Matrix
facts verified 2026-08-10
| Dimension | Calday (Paid) | Easy!Appointments (Replacement) |
|---|---|---|
| Monthly Price | Paid tier | $0 / mo |
| Source & License | Proprietary SaaS | open source GPL-3.0 |
| Where It Runs | Vendor Cloud | Self-host (your server) |
| Platforms | Web / Cloud | webself-hostedself-host, real ops |
| GitHub Stars | — | ★ 4.3k (active jul 2026) |
Deep Dive: Switching from Calday to Easy!Appointments
Trade-offs, installation & data architecture
What you trade away
It has no managed hosting, built-in payment stack or turnkey SMS service, and the owner must maintain PHP and MySQL.
How to deploy Easy!Appointments
Upload the release to PHP hosting, create a MySQL database, edit the configuration and run the web installer; Docker is optional
What it takes to run
PHP and MySQL hosting with database permissions; Google Calendar sync additionally requires a Google Cloud OAuth application
Where your data lives
Bookings, providers, services and customers live in MySQL; configuration and logs live on the web server, with optional Google Calendar synchronization
Why fork Easy!Appointments instead of vibe-coding a Calday clone?
Calday's solo core is compact: build a personal booking links tool that reads one calendar, publishes availability, reserves a slot, and writes the event back. A competent builder can reach a useful personal version in one sitting, while the paid product mainly wins on OAuth, calendar reliability.
Calday vs Easy!Appointments FAQ
Is Easy!Appointments a good free alternative to Calday?+
Yes. Easy!Appointments is a verified open-source (GPL-3.0) replacement for Calday. A proper provider-and-service booking system, provided you will also become its PHP and MySQL caretaker.
What is the catch when switching from Calday to Easy!Appointments?+
It has no managed hosting, built-in payment stack or turnkey SMS service, and the owner must maintain PHP and MySQL.
How do I install or self-host Easy!Appointments instead of Calday?+
Install: Upload the release to PHP hosting, create a MySQL database, edit the configuration and run the web installer; Docker is optional. Setup: PHP and MySQL hosting with database permissions; Google Calendar sync additionally requires a Google Cloud OAuth application
