Proton CalendarProton AG
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Related Products
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About
Calfeed turns a written schedule into a calendar link people subscribe to from Apple, Google, or Outlook. Paste plain text, a link, a spreadsheet, a PDF, or a photo. AI builds the events; you review and publish one stable link. Subscribers see changes automatically: no resending files, no version confusion, no group texts when a time moves.
Built for people who keep a schedule others follow: nurses and shift workers on rotating schedules, coaches publishing practice times, instructors, parents juggling kids' activities, and event organizers. Handles messy input, overnight shifts, and rotating patterns like 4-on-4-off.
Every calendar gets a public page with per-device subscribe buttons, an embeddable widget, and optional custom branding (logo and color). A Chrome extension and iOS Shortcut create calendars from any page or screenshot.
First calendar free. Pay per calendar with credit packs from $9, or Pro at$19/month for high-volume publishing.
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About
Your calendar is a record of your life. Proton Calendar helps keep it private. Proton Calendar automatically secures all your events with end-to-end encryption. Events received from people who use other calendars are secured with zero-knowledge encryption. In both cases, event details, including the title, description, location, and people invited, are encrypted so not even we can see them. Proton Calendar makes staying on top of your schedule simple while keeping your information secure. Proton Calendar was built by the team behind Proton Mail, the world’s largest encrypted email service. Over 50 million people and some of the world’s largest organizations have signed up with Proton. Proton Calendar comes with a Proton Mail email address that you can use to securely send event invites. You can also add events to Proton Calendar directly from your Proton Mail inbox.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
For people who schedule: individuals, parents, organizers, coaches, churches
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Audience
Users that want an efficient, private, and secure calendar app
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$12/month
Free Version
Free Trial
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Pricing
Free
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationCalfeed
Founded: 2025
United States
calfeed.ai
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Company InformationProton AG
Founded: 2014
Switzerland
proton.me/calendar
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Categories |
Categories |
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Calendar Features
Calendar Sync
Collaboration Tools
Multi-Device Support
Reminders
Room Booking
Scheduling
Task Manaagement
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Integrations
Apple Calendar
ChatGPT
Claude Agent SDK
Gemini
Google Calendar
Perplexity
Proton Mail
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Integrations
Apple Calendar
ChatGPT
Claude Agent SDK
Gemini
Google Calendar
Perplexity
Proton Mail
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