About Calerto
Calerto is a meeting alarm app for iPhone, iPad and Mac. It reads upcoming events from Apple Calendar and Google Calendar and sets a dedicated alarm with customizable prep time, on the premise that silent calendar notifications are easy to overlook.
A single tap or swipe turns an invite into an alarm, and prep time can be set at 1, 5, 10, 15, 30 or 60 minutes before the event, with help joining Zoom, Google Meet or Microsoft Teams calls. A countdown card shows the next meeting and whether an alarm is set, alarms can be paused without deleting them, and calendars can be color-coded and searched. A Pro option arms every meeting in the next seven days automatically, and the app uses AlarmKit for scheduling.
Calerto is a proprietary app from the developer Rohit Jindal, free to download with in-app purchases and available in many languages.
Key features
- Turns calendar invites into loud alarms
- Adjustable prep time before meetings
- Apple Calendar and Google Calendar sync
- Countdown card for the next meeting
- Pause alarms without deleting them
- Auto-alarm for the coming week in Pro
Good fit for
- →Remote workers who miss silent meeting notifications
- →Joining Zoom or Teams calls on time
- Tags
- meeting-alarms
- calendar
- reminders
- ios
- productivity
- zoom
- google-calendar
Calerto: questions and answers
- What is Calerto used for?
- Calerto is an app that turns Apple and Google Calendar meeting invites into loud alarms with adjustable prep time so you do not miss a meeting. It is a good fit for remote workers who miss silent meeting notifications and joining Zoom or Teams calls on time.
- Is Calerto free?
- Yes. Calerto has a free plan.
- Is Calerto open source?
- No. Calerto is proprietary (closed-source) software. In the Scheduling category, open-source options include Cal.diy, Easy!Appointments and Thunderbird Appointment.
- What are some alternatives to Calerto?
- Other SaaS products in the Scheduling category include 0sec, Notion Calendar and Add More Colors to Calendar.
Open-source alternatives to Calerto
See all
Cal.diy
Scheduling
Scheduling infrastructure for absolutely everyone.
MITvs Calendly★ 49k
Easy!Appointments
Scheduling
:date: Easy!Appointments - Self Hosted Appointment Scheduler
GPL-3.0vs Calendly★ 4.4k
Thunderbird Appointment
Scheduling
Invite others to grab times on your calendar. Choose a date. Make appointments as easy as
MPL-2.0vs Calendly★ 553Someday
Scheduling
Free to host calendar availability picker - open-source cal.com / calendly alternative bui
MITvs Calendly★ 1.1k
Radicale
Scheduling
A simple CalDAV (calendar) and CardDAV (contact) server.
GPL-3.0vs Google Calendar★ 5.1k
Baïkal
Scheduling
Baïkal is a Calendar+Contacts server
GPL-3.0vs Google Calendar★ 3.3k
SaaS alternatives to Calerto
See all
0sec
Scheduling
Voice-controlled calendar app that schedules events and manages time from spoken commands
SaaS
Notion Calendar
Scheduling
Calendar app that syncs with Google Calendar and links events to Notion pages
SaaS
Add More Colors to Calendar
Scheduling
Chrome extension that adds custom hex colours to Google Calendar events
SaaS
Apple Calendar
Scheduling
Calendar app for iPhone, iPad and Mac with shared calendars and iCloud sync
SaaS
BigCal
Scheduling
Full-year calendar view with Google Calendar integration
SaaS
BusyCal
Scheduling
Mac calendar app with advanced views and Google and Exchange sync
SaaS

