A Timer Born from the Voices of Active Instructors
Set a timer not just for "how many minutes left," but "until what time."
"entimer." is an app born from the voices of active professional instructors. From classrooms to conference rooms, academic conferences to exam venues, it helps everyone share the exact same end time.


All-in-one: Targeted Time, Duration, and Clock
Set the end of the first period using the targeted time timer
Set the exercise duration using the duration timer
Keep track of the current time with the clock
Key Features
- 01"Can I set it by time, not just by minutes?"
Targeted Time Countdown
You can set a target end time, such as "until 13:00". Eliminates the need to calculate "how many minutes left until 13:00". Plus, it finishes exactly at your specified end time.
- 02"How many seconds did we go over?"
Track Overtime Accurately
By disabling "Auto-stop at 0 seconds," the timer continues to count up after the time limit is reached. This allows you to accurately track how many seconds a speaker has exceeded their limit in situations like a 3-minute speech.
- 03"Can they see this from the back seats?"
High-Impact Giant Display
Displays time in large, clear text so anyone can check the remaining time at a glance, whether from the back of a classroom or over a screen share in online meetings.

- 04"Saying 'X minutes left' doesn't really click..."
Intuitive Visual Progress Bar
Visualize remaining time with progress bars and circles. Intuitively grasp "how much time is left" without reading numbers, making it easier to pace exercises and discussions.
- 05"What session are we in right now?"
Zero-Confusion Screen Design
Consolidates all essential training information on a single screen. Even latecomers can instantly understand "what to do now" just by looking at the screen.
What to do (Title)Key points to note (Subtitle)How long (Set Duration)By when (Target End Time)Remaining minutes (Time Left)At a glance (Visual Progress)
- 06"I don't have time to keep looking at the screen..."
Hear the Time Left via Voice
Notifies you with spoken announcements like "1 minute left until exercise ends" (OFF by default), letting you check remaining time without looking at the screen. Read-aloud formats can be fully customized, including timer titles or encouraging words.
Remaining timer timeTimer finishedTime is upOvertime durationTimer configuration detailsCurrent time - 07"I wish I had a customizable hourly chime..."
"Audio Clock" for Busy Mornings
An instructor's morning is packed minute-by-minute, leaving no time to look at a clock. That's where the voice time announcer shines. It acts as an "audio clock" to support your morning preparations.
Every hourEvery minuteCustom intervals (e.g., every 5 or 10 minutes) - 08"Reconfiguring the timer every time is annoying..."
Instant Presets, Zero Reconfiguration
In training sessions, there are many scenarios requiring time management, such as breaks, exercises, discussions, and exams. By registering timers for each purpose as presets in advance, you can recall them instantly with a single tap.
Sort them in chronological order of your training schedule and you are ready to goLeverage the copy feature to quickly create similar timer settingsSave your carefully tuned "current configuration" into presets with one tapShare presets via export (files or clipboard)Restore presets via import (append or overwrite) - 09"App installation is prohibited at this site..."
No Installation Required (Web App)
Security conditions at training venues are often very strict. No matter how much time you spend preparing, it is meaningless if the app cannot run on-site.
Use the web version with no installation required in environments where installing apps is restrictedImport presets and settings via the clipboard in environments where file handling is blockedNo annoying ads at all! - 010"Oh no, the app crashed! What now?"
Instant Recovery Upon Restart
With the hibernation feature, simply restarting the app restores your timer state "as if nothing happened." Don't worry, even if the app closes unexpectedly.
- 011"Why doesn't the timer show up in screen share options?"
Designed for Reliable Screen Sharing
Strictly designed in compliance with standard OS behaviors to ensure it appears in screen sharing lists of web conferencing apps like Zoom or Microsoft Teams. Never worry about the timer failing to show up when sharing your screen.