Libellus
Justin Salcedo Productivity
Schedule planner with reminders and routine prediction
- Downloads
- 116+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Oct 10
- 2026 · v1.3.1
Screenshots
About Libellus
# Features
## Focus timer ("The Watcher")
Based on the Parkinson's Law and Pomodoro technique, the Watcher shows a full-screen countdown timer to generate the urge to complete a task. Every activity generates a timer visible via the Watcher and background notification, so you don't have to open the app to stay productive.
Parkinson's Law states that one will always prolong a task to use all the time available before a deadline. Trick your mind into tightening those deadlines and forcing yourself to use the minimum amount of time to complete an activity.
## Timeline
Our timeline view supports a time-block builder interface for adding activities in "chunks" to speed up the schedule creation process. Moreover, Libellus auto-saves your activities on the cloud and synchronizes data across your devices.
## Notifications
Libellus sends reminders as background notifications to keep up with your schedule. These notifications include a countdown timer, visible on lock screens, and paired smartwatches.
## Statistics
Review your daily and weekly time metrics.
## Customization
Tweak the following app settings: notifications, time format, theme, language (English and Spanish only, by now), Timeline grid, custom name in timer for activity gaps, preferred schedule start time, and data management.
Could you help us improve? Take the surveys on our site at libellus.io/survey or go to the third screen of the app. We appreciate your feedback. Thanks for using Libellus.
Designers (UI/UX):
- Mery Farias
- Saúl Durand
- Karen Buitrago
Developers:
- Justin Salcedo
- Miguel Expósito
- Nicolas Rojas
- Luis Mesajil
Testers
- Christian Ramirez
What’s new
Version 1.3.1 · Updated October 10, 2026
v1.2.3 - Improvements - More stable performance v1.3.1 - Improvements - Ready for Android 16 (requires Android 7.0 or later) - Faster startup, and the app opens when the server can't be reached - Unsynced changes are kept when you log out - Fixes - Timers and reminders work without the "Alarms & reminders" permission - Log in no longer spins forever - Fixed lines when cropping some photos and a crash when rotating in Settings
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