UD5 Toolkit
Smile Exercise Timer – Boost Mood with Deliberate Smiling
Hold a gentle smile for a set duration while looking at a calming image. A simple, evidence‑based mood booster based on facial feedback hypothesis.
Tag: Timer - Countdown & Stopwatch
42+ tools4‑7‑8 Breathing Technique Timer – Relaxation Exercise
Follow an animated circle that guides you through the 4‑7‑8 breathing pattern. Inhale 4s, hold 7s, exhale 8s. Counts cycles and provides haptic cues.
Ice Pack Timer – Online 20‑Minute On/Off Cycle
Visual timer with reminders to apply ice for 20 minutes and rest for 2 hours. Useful for sprains.
Solar Eclipse Timer – Online Countdown to C1/C2/Max/C3/C4
Enter a future eclipse date and approximate location to see estimated contact times. Event countdown.
Meeting Agenda Timer – Online Stay on Topic with Countdown
Create a simple agenda with timeboxes for each topic. Visual countdown and alerts for each.
HIIT Interval Timer - Online Custom Work & Rest
Set up high‑intensity intervals with work, rest, and rounds. Audio cues. Sweat without any app. Local only.
Advanced Eye Exercise Timer – Online 20‑20‑20 + Focus Shift
Alternates between near and far focus cues with timed breaks. Reduce digital eye strain.
Sterilization Timer – Online Boil Water Reminder for Pacifiers
Countdown timer with alerts for boiling pacifiers, bottles, or pump parts. Follow recommended times. Local audio alarm.
Event Countdown Timer - Online Days Until Birthday Wedding Vacation
Set any future date and see a live countdown in days, hours, minutes, seconds. Fun animated display. Save multiple countdowns locally.
Iron Absorption Optimizer – Online Timing & Food Pairing
Schedule your iron supplement away from inhibitors (coffee, calcium). Visual reminder and log.
Breathing Exercise Timer - Online Box Breathing & 4-7-8 Guide
Guided breathing exercises with animated circle for inhale/hold/exhale. Includes box breathing, 4-7-8, and resonant breathing patterns. Customizable intervals.
Pomodoro Timer with History - Online Track Focus Sessions
Pomodoro timer that saves completed sessions to localStorage. View daily/weekly stats. Boost productivity with data.
Reapply Sunscreen Reminder – Online Timer for Outdoor Play
Set interval reminders to reapply sunscreen every 2 hours (or custom) with sound and notification. Protect kids' skin.
Breathing Exercise Timer - Online Inhale Hold Exhale Visual Guide
Animated circle guides your breathing: breathe in, hold, breathe out. Customizable ratios (e.g., 4-7-8). Soothing colors, optional bell sound. Purely local.
Eye Strain Relief Timer - Online 20-20-20 Rule Reminder
Timer that reminds you to look at something 20 feet away for 20 seconds every 20 minutes. Customizable intervals and subtle sound/visual alerts.
Heat Therapy Timer – Online Safe Application Window
Countdown timer for applying a heating pad. Includes recommended max session. Prevent burns.
Beef Jerky Dehydration Timer – Online Thickness & Time Guide
Calculate dehydrating time based on meat slice thickness and desired texture. Countdown timer with reminders.
Tea Brewing Timer - Online Perfect Steep for Green Black Oolong
Select tea type and get recommended steeping time & temperature. Start a visual countdown with an alert. Make every cup perfect. No ads, local.
Meditation Chime Timer - Online Mindfulness Bell
Set a meditation duration with optional interval chimes. Soothing bell sounds at the start and end. No ads.
Birthday Countdown Widget - Online Your Big Day Timer
Set your birth date and see a live countdown with days, hours, minutes, and seconds. Shareable link. Pure frontend.
Emoji Countdown Timer – Online Animated Pizza/Smiley Alarm
Set a short timer with a themed emoji animation (e.g., pizza cooking). A playful visual countdown.
Baby Nap Timer – Online Reminder & Soothing Sounds
Set a nap timer with optional gentle white noise or lullabies (Web Audio). Reminder to put baby down. Fully local, no ads.
Yogurt Incubation Timer & Culture Scheduler
Set timer for incubation period with temperature guide. Track hours for optimal tanginess. Homemade yogurt.
Sunburn Risk Timer - Online UV Index to Safe Exposure
Enter skin type and UV index to estimate time to sunburn. Visual countdown reminder to reapply sunscreen or seek shade. Educational only.
Countdown Timer with Laps - Online Workout & Study
Run a countdown timer that automatically repeats for a set number of laps. Great for HIIT, study sprints, or any interval work.
Posture Reminder - Online Sit Straight Alert & Timer
Set recurring audio/visual reminders to check and correct sitting posture. Adjustable interval and notification style. Helps reduce back pain from desk work.
Multi‑Stopwatch Page - Online Track Many Tasks
Run up to 4 independent stopwatches at once with labels. Perfect for timing multiple tasks or sprints.
Coding Interview Timer - Online LeetCode Practice Clock
Set a 20, 30, or 45‑minute countdown to simulate a technical interview. Hidden/unhidden. Boost your prep.
Pomodoro Task Planner - Online Work Sessions & To‑Do List
Combine a Pomodoro timer with a built‑in to‑do list. Estimate pomodoros per task, track completed sessions, and see daily progress. All data stored locally.
Meeting Speaker Timer - Online Countdown Per Agenda Item
Set a list of agenda items with allocated minutes. Advance through speakers and see remaining time visually. Keep meetings on track.
Stopwatch & Countdown Timer - Online Dual Tool
Dual-function tool: a precise stopwatch with laps and a configurable countdown timer with alarm sound. Works offline, perfect for activities.
Countdown to Date - Online Custom Event Timer
Create a personal countdown to any future date (birthday, vacation, launch). Shows days, hours, minutes, seconds. Locally stored.
Digital Hourglass - Online Visual Timer with Sand
An animated hourglass that you can set for any time. Watch the sand flow. Beautiful and calming timer.
Posture Reminder Timer - Online Sit Up Straight Alert
Set a recurring timer that reminds you to check your posture. Desktop notification with a gentle chime. Stay healthy.
Speech Timer – Online Practice Presentations with WPM
Paste your speech, set time limit, and practice with a pacing indicator (words per minute). Refine delivery.
Meditation Bell Timer - Online Interval Singing Bowl
Set a meditation session with singing bowl sounds at start, interval chimes, and end bell. No ads, pure serenity.
Work Break Reminder - Online Eye‑Care & Stretch Timer
Set a timer that reminds you to take a break, stretch, or follow the 20‑20‑20 rule. Desktop notification supported. Runs offline.
Pomodoro Timer - Online Focus & Productivity Countdown
Boost your productivity with the Pomodoro technique. Customizable work and break intervals with desktop notifications. Simple, clean, and works offline.
Egg Timer - Online Soft, Medium, Hard Boiled Countdowns
Pick your egg style and get a precise timer with visual progress. Perfect boiled eggs every time. No app needed.
Tea Steeping Timer - Online Perfect Brew Countdown
Choose your tea type and start a precise steeping timer with color‑changing background. Never over‑steep again.
Online Alarm Clock - Set & Wake with Sound
Set an alarm that rings at a specific time even if the tab is in background. Multiple alarm tones. Works offline.
Online Stopwatch - Free Lap & Split Timer Tool
Accurate online stopwatch with lap and split time capabilities. Start, pause, and reset. Ideal for sports and presentations. Runs natively in the browser.