A lightweight and elegant timer app for macOS
InerziaTimer is a simple, powerful, and easy-to-use timer utility for Mac that helps you measure time precisely—whether you’re working, cooking, studying, or taking breaks.
Its clean, non-intrusive interface fits seamlessly into your desktop, and it’s optimized to use minimal system resources. With Countdowns, a Stopwatch, and a Reminder, InerziaTimer covers all your time tracking needs in one sleek app.
Key Features
• Countdown: quickly set a countdown using the keyboard or the intuitive knobs. At the end of the countdown, you can choose what happens: play a sound (custom volume and optional repetition), speak a sentence using the system voice, show a system notification, display a dialog, open a file or launch an app
Pause and resume your countdown anytime. Perfect for work sessions, Pomodoro routines, or cooking timers.
• Stopwatch: start timing instantly and log lap times with precision. InerziaTimer calculates lap averages automatically and lets you expor lap results to a text file. Need to repeat the same interval? You can copy a stopwatch time directly into the countdown with a single click.
• Reminder: set reminders for any future date or time, great for long-term tasks. Like the countdown, the reminder supports customizable actions and runs independently.
Note: while countdowns are limited to 24 hours, reminders can be set for any future date.
Lightweight and Privacy-Friendly
InerziaTimer is designed to stay out of your way:
• Minimalist interface
• Tiny memory footprint
• Absolutely no tracking, no ads, and no background analytics
Please note: InerziaTimer must remain open to keep timers or reminders active. It cannot run in the background after quitting or wake your Mac from sleep.
This app hasn’t received enough ratings or reviews to display an overview.
Good little app, need just one thing
frytechofficial
I like this little app, the stopwatch has all the functionality that one may need.The only thing I'd ask the developer to add is the abiity to pin the app's window on top of all the other windows, a-la Notes app style where you can float one selected note on top of everything else.This pin to top feature would be really nice, I hope you can add it.
Developer Response
Hey there! Thanks for the kind words and the positive review. Pinning the window on top is definitely something we can do: we’ll work on it for the next update! Stay tuned!
Excellent.
0oops.n00b
Have tried multiple applications, this is the best of all.He is complete. Countdown, Alarm Clock and Chronometer.The option of repeating the sound at intervals of time, not found in any of the others apps I tested.Thanks for being free.
Great App
Starcentric
This is a great app. If you are looking for a chronometer, this is the best option. Just wish the developers make the Start/Stop options in the same button.
Works very well!
sunnyhelmsman
Inerzia is what an app should be. Easy to use, and great interface.And it is free. Many thanks.
Experience the refreshed Liquid Glass look and a sleek new icon, designed for the latest macOS.
New Features
• Modern Liquid Glass UI and updated app icon (macOS 26 or later).
• You can now close the main window while timers keep running in the background.
• Option to quit automatically when the main window is closed and no timers are active.
Improvements
• Refined layout in the Settings window for a smoother experience.
• Enhanced French localization.
Fixes
• Resolved minor issues in Italian localization.
Version 2.9.0
The developer, Massimo Moiso, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
