Calday alternatives: 6 free & open-source picks
Curated, verified, and actually free. No trials, no crippled tiers. Star counts and last-activity dates checked by hand, not scraped and forgotten.
Un sistema de reservas de proveedores y servicios completo, siempre que tú también te conviertas en su administrador de PHP y MySQL.
licenseGPL-3.0
runsyour server
installUpload the release to PHP hosting, create a MySQL database, edit the configuration and run the web installer; Docker is optional
dataBookings, providers, services and customers live in MySQL; configuration and logs live on the web server, with optional Google Calendar synchronization
the catch vs CaldayIt has no managed hosting, built-in payment stack or turnkey SMS service, and the owner must maintain PHP and MySQL.
setupPHP and MySQL hosting with database permissions; Google Calendar sync additionally requires a Google Cloud OAuth application
facts verified 2026-08-10
Un miembro del personal obtiene recordatorios, clases y pago con Square para 100 reservas al mes; el crecimiento activa el muro de pago.
licenseproprietary, free
runstheir cloud
installHosted signup
dataBooking, customer, service and staff records live in Appointy's cloud, with connected calendar and payment data also handled by their respective providers
setup✓ installs clean
the catch vs CaldayOne staff member, five services, 100 monthly appointments and no free two-way calendar sync make it easier to outgrow than Calday.
facts verified 2026-08-10
Cuatro miembros del personal, pagos, clases y 200 reservas mensuales; SMS, citas recurrentes y sincronización bidireccional cuestan extra.
licenseproprietary, free
runstheir cloud
installHosted signup
dataBooking, customer and staff records live in Setmore's cloud, with calendar and payment records also passing through connected providers
setup✓ installs clean
the catch vs CaldayThe free plan caps bookings at 200 and excludes recurring appointments, SMS reminders and two-way calendar sync.
facts verified 2026-08-10
Un paquete serio de reservas gratuito para uso individual donde Square opera; las tarifas de procesamiento se mantienen y la combinación de funciones varía según el país.
licenseproprietary, free
runstheir cloud
installCreate or use a Square seller account and enable Appointments
dataAppointment, customer, staff and transaction records live in Square's cloud
the catch vs CaldayIt is available only in supported Square markets, the free tier is solo and the workflow is tied to Square's payment ecosystem.
setupA Square seller account and identity verification, and the service must be available in the user's country
facts verified 2026-08-10
Enlaces y calendarios ilimitados, preguntas personalizadas, recordatorios por correo y pagos con Stripe; los equipos son de pago y zcal cobra 3%.
licenseproprietary, free
runstheir cloud
installHosted signup
dataAccount and booking records live in zcal's cloud; Stripe processes and stores payment details for paid bookings
setup✓ installs clean
the catch vs CaldayIt is more meeting-link-oriented and has less provider and service-business administration, while Stripe payments cost an extra 3%.
facts verified 2026-08-10
Un escritorio de reservas real para una persona con formularios, recordatorios y sincronización bidireccional; el personal y la infraestructura de pagos cuestan extra.
licenseproprietary, free
runstheir cloud
installHosted signup
dataAccount, booking and customer records live in Zoho's data centres and are synchronized with connected calendar and meeting providers
setup✓ installs clean
the catch vs CaldayIt is limited to one user and one service and does not include payment collection on the free plan.
facts verified 2026-08-10
last updated 2026-08-10 · no votes, no pay-to-list · just what's real
Picktime FreeThe free plan omits automated reminders, which is one of the small-business basics here.
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Easy!Appointments | GPL-3.0 | self-host, real ops | web, self-hosted | 4,300 | 2026-07 |
| Appointy Free | proprietary, free | they host it | web, ios, android | — | — |
| Setmore Free | proprietary, free | they host it | web, ios, android | — | — |
| Square Appointments Free | proprietary, free | they host it | web, ios, android | — | — |
| zcal Free | proprietary, free | they host it | web | — | — |
| Zoho Bookings Free | proprietary, free | they host it | web, ios, android, browser-extension | — | — |
Calday: People pay because a booking tool must never double-book them, leak private events, or send the wrong time to a client.
Is there a free alternative to Calday?
Yes: Easy!Appointments, Appointy Free, Setmore Free and 3 more. Every tool on this page is either open source or genuinely free to use long-term: no trials, no crippled tiers.
Should I just build my own Calday?
Our verdict is SÍ. 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. If you'd rather build, the exact one-shot prompt is free at puedovibecodearlo.app/calday.
