back to top
HomeAppsAndroid AppsFossify Calendar: Private & Powerful Open-Source Calendar App

Fossify Calendar: Private & Powerful Open-Source Calendar App

fossify calendar app for android
Firethering Team
By Firethering Team
0
Last updated:
- Advertisement -

File Information

FieldDetails
NameFossify Calendar
Versionv1.9.0
File Format Provided.apk
APK Size8.31 MB
PlatformsAndroid
LicenseOpen Source (GPL v3.0 License)
Official RepositoryGitHub Fossify Calendar
Official SiteFossify
CategoryCalendar • Productivity • Scheduling

Table of contents

Description

Fossify Calendar is a free & open-source calendar application built for users who value privacy, simplicity, and control over their schedules.

This app keeps everything local and transparent. Your events stay yours, no unnecessary background services.

The app combines a clean Material-style interface with powerful scheduling tools which makes it suitable for professionals, students, families, and anyone who wants a distraction-free planning experience.

Use Cases

  • Manage daily schedules without ads or tracking
  • Replace cluttered or privacy-invasive calendar apps
  • Plan work, personal events, and reminders in one place
  • Sync calendars while keeping full user control
  • Use a lightweight open-source calendar alternative

Screenshots

Open Source Calendar App
Calendar App for android

Features of Fossify Calendar

FeatureDescription
Offline & Private Works offline & no extra permissions
Flexible Event CreationSet custom times, durations, reminders, and repeat rules
Calendar Sync SupportWorks with Google Calendar, Outlook, Nextcloud, Exchange, and more
Multiple ViewsDaily, weekly, monthly, yearly, and event list views
Event FilteringQuickly filter and find specific events
Custom NotificationsChoose sounds, vibration patterns, and looping alerts
Widgets & ThemesHome-screen widgets with customizable colors and styles
Holiday & Birthday ImportEasily add celebrations and special dates
Material Design UIClean, modern, and intuitive interface
Open SourceFully transparent development under GPL-3.0

System Requirements

RequirementDetails
Operating SystemAndroid 6.0 or newer
RAM1 GB minimum
Storage Space~9 MB
InternetOptional (only for syncing)

How to Install Fossify Calendar??

Android (.apk)

  1. Download the Fossify Calendar APK
  2. Enable Install from Unknown Sources (if required)
  3. Open the APK file and install
  4. Launch the app and start planning

Download Fossify Calendar App For Android

Download Fossify Calendar

Conclusion

Fossify Calendar proves that a modern calendar doesn’t need bloated features to be powerful.

If you’re looking for a lightweight, privacy-respecting, and customizable calendar app, Fossify Calendar is one of the best open-source options available on Android today.

Don’t miss any Tech Story

Subscribe To Firethering NewsLetter

You Can Unsubscribe Anytime! Read more in our privacy policy

LEAVE A REPLY

Please enter your comment!
Please enter your name here

YOU MAY ALSO LIKE
RapidRAW mobile app

RapidRAW APK: RAW Photo Editor for Android

Firethering Team - 0
Mobile photo editing apps usually force you to choose between simplicity and control. RapidRAW tries to give you both. Built as a modern RAW photo editor, RapidRAW brings many of the tools photographers normally expect from desktop software directly to Android. You can edit RAW images non-destructively, apply advanced color grading, work with masks, correct lenses, reduce noise, and export finished photos without altering the original files. What makes RapidRAW particularly interesting is its focus on performance. The editing engine is GPU-accelerated, allowing adjustments to feel responsive even when working with high-resolution images. At the same time, the interface stays clean and approachable instead of overwhelming users with complicated workflows. If you're editing photos from a DSLR, mirrorless camera, or a smartphone that captures RAW images, RapidRAW offers a capable mobile editing experience.
Sefirah for Android

Sefirah for Android: Open-Source Phone Link Alternative for Windows

Firethering Team - 0
Sefirah is an open-source Android companion app designed to keep your phone and Windows PC connected over your local network. Once paired, you can share clipboard content, transfer files, mirror your phone screen, view notifications on your desktop, control media playback, and even access Android storage directly from Windows Explorer. The experience feels closer to having both devices working as one system. Because communication happens directly between your devices, most features continue working without internet access as long as both devices remain connected to the same local network.
PDF Toolkit A Privacy-First Offline PDF App for Android

PDF Toolkit: A Privacy-First Offline PDF App for Android

Firethering Team - 0
PDF Toolkit is one of those Android apps that feels simple but very useful. You install the APK, open it, and everything runs directly on your device. The app covers most of the stuff people actually need including merging PDFs, splitting files, compressing documents, converting images to PDF, extracting pages, signing files, adding annotations, and even scanning documents with automatic edge detection. It does not require internet permission. Most alternatives push everything through cloud APIs or lock basic tools behind subscriptions. There is also proper OCR support. The Play Store build uses Google ML Kit for smaller downloads, while the open source builds use Tesseract OCR so the entire stack stays fully offline and open source.