Comparison

IntervalTimer+ vs MillisecondTimer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

IntervalTimer+

This utility app provides a simple interval timer with customizable sound and vibration alerts. Users can set specific durations and receive notifications to manage their timed activities effectively. It supports custom sound additions for a personalized experience.

Highlights
  • Customizable interval timer
  • Vibration notifications
  • Sound alerts
  • Customizable sound options
  • Light notifications
Features
Read full description

Simples Interval Timer. Per the specified time, it is notified by vibration and sound and light. You can be notified in your favorite sound When you add a mySound.wav in iTunes

About

MillisecondTimer

This app provides highly accurate timing tools, including a countdown timer, stopwatch, and clock, all with millisecond precision. It's designed for precise measurements in workouts, games, and everyday situations, offering background operation and seamless switching between apps.

Highlights
  • Millisecond precision timing
  • Countdown timer with custom intervals
  • Stopwatch for accurate interval recording
  • Real-time millisecond clock display
  • Background operation and notifications
  • Recent timers for quick reuse
  • Customizable 12/24 hour clock format
Features
Read full description

Millisecond Timer is an all‑in‑one app that lets you use a countdown timer, stopwatch, and clock with millisecond (0.001 second) precision. Millisecond Stopwatch records your time accurately down to the millisecond, and Millisecond Clock shows the current time with millisecond precision. When you first install the app, a simple tutorial appears automatically so you can learn how it works and start using it right away. Use Millisecond Timer and Millisecond Stopwatch in situations like these - Measuring workout intervals and exercise times that need accurate records (running, marathon training, etc.) - Everyday situations where you need a precise countdown - Events or games that require millisecond‑level countdowns - Timer challenge games with friends, such as “Who can stop closest to 2.785 seconds?” or for fair draws and random picks 【Millisecond Timer】 - Set timers in hours, minutes, seconds, and milliseconds. - Easily increase or decrease the time using the + and − buttons. - Press and hold the + or − button to quickly set the exact time you want. - Instantly reuse your recent timers from the Recent Timers list. - Tap the displayed time to type in a value faster than using buttons. - Get notified when the timer finishes, even if you’re using another app (background) or your device is locked. - If the timer is running and you switch to another app, it will keep counting and resume seamlessly when you return. 【Millisecond Stopwatch】 - Record times one by one with millisecond precision. 【Millisecond Clock】 - See the current time in real time, down to the millisecond. - Choose between 12‑hour and 24‑hour formats in Settings. - Enjoy a clean digital clock design with a digital‑style font. If you find a bug or have a feature request, go to Settings in the app and use “Send Bug Report & feedback” to contact the developer. 【Pro Version】 Pro is available as a monthly or yearly subscription, as well as a lifetime purchase. - Subscriptions are charged to your Apple ID. - You can manage or cancel your subscription at any time in your Apple Account settings. - If you do not cancel at least 24 hours before the next billing date, your subscription may renew automatically. - All subscription terms follow Apple’s App Store policies. • Terms of Use: https://comdori.tistory.com/179 • Privacy Policy: https://comdori.tistory.com/161

Screenshots

IntervalTimer+3 screens
MillisecondTimer4 screens

Verdict

The call

The clearest difference is price: MillisecondTimer at Free against IntervalTimer+'s $2.99. MillisecondTimer also leads on update cadence (every 3 weeks vs every 6 months). IntervalTimer+'s advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

MillisecondTimer is free to download; IntervalTimer+ costs $2.99 up front. MillisecondTimer sells 3 in-app purchases, starting at $1.00 per month. IntervalTimer+ asks for nothing beyond the download.

UpkeepUpdate frequency

IntervalTimer+ ships an update every 6 months, MillisecondTimer every 3 weeks. The most recent releases landed on October 8, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
IntervalTimer+ versus MillisecondTimer: the parameters behind the verdict, then further details
ParameterIntervalTimer+MillisecondTimer
Price$2.99Free — better
Rating—5.0 (9 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings—9 — better
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.6
Further details — not scored
Size1 MB30 MB
Age rating4+4+
DeveloperwhitezWONJI HA

Customer experience

IntervalTimer+

Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

MillisecondTimer

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

IntervalTimer+

No in-app purchases

3 purchases

MillisecondTimer

Subscriptions2
  • MillisecondTimer Pro Month Plan$1.001 Month
  • MillisecondTimer Pro Annual Plan$5.991 Year
One-time1
  • MillisecondTimer Pro Lifetime$34.99

Questions

Is IntervalTimer+ free?
IntervalTimer+ costs $2.99, with no in-app purchases.
Is MillisecondTimer free?
MillisecondTimer is free to download, with in-app purchases available.
Do IntervalTimer+ or MillisecondTimer have ads?
MillisecondTimer shows ads; IntervalTimer+ does not.
Which is updated more often, IntervalTimer+ or MillisecondTimer?
IntervalTimer+ ships an update every 6 months, and MillisecondTimer every 3 weeks. Most recently, IntervalTimer+ was updated on October 8, 2026 and MillisecondTimer on October 30, 2026.

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