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iOS 3 can’t install from Safari. You can still download the IPA file, but you’re on your own after that.
Seconds Pro - Interval Timer
 This app is designed for both iPhone and iPad

RequirementsCompatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later.

Customer Ratings

As of December 10, 2018
     
4,597 Ratings

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Seconds Pro Interval Timer is the best interval timer for Tabata, HIIT & Circuit Training workouts. As well as being featured by Apple, it is recommended by celebrity and personal trainers to their clients all around the globe.

INTERVAL TIMER:

- Full screen, colored display. Easy to read from a distance. Landscape or portrait. - Templates for HIIT, Tabata & Circuit Training. Combine timers for ultimate control. - Speaks your interval names & can provide warning for upcoming intervals. - Other alerts including beeps and bells are available. - Assign music per interval or per interval timer. - Match the intensity of your music to the intensity of your HIIT workoutk. - Interval timer runs in the background while you use other apps. - Share your interval timer with a friend.

ADDITIONAL TIMERS:

- Stopwatch highlights best and worst lap times. - Countdown Timer with 5 preset durations (only first 3 on Apple Watch).

APPLE HEALTH:

- Seconds Pro Interval Timer can use Apple Health to save workouts or mindful sessions, read body measurements and year of birth to calculate calorie expenditure in conjunction with a heart rate monitor.

VARIANTS: - Please note, Seconds Interval Timer and Seconds Pro Interval Timer are separate products. Once paid for they each contain identical features. However, they are not interchangeable. If you have purchased one you should always download that version and in the case of Seconds Interval Timer, restore the in-app purchase within it gain access to the upgraded features.

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To install apps directly onto this device, it must be jailbroken with AppSync installed.
1.1.1
Requires iOS 3.1+
877 KB Install Download
2.3.1 (74)
Requires iOS 5.0+
Retina (iPhone only)
February 3, 2013
9.4 MB Install Download 1 more copy ›
Seconds 2.3.1.ipa · 15.7 MB Encrypted Install Download

Chart History

Top Paid · Health & Fitness View chart ›
Peaked at #14 (June 30, 2021) · 29 archived captures · Dec 2010 – Sep 2021
Top Paid · Health & Fitness · iPad View chart ›
Peaked at #2 (July 1, 2021) · 27 archived captures · Jun 2021 – Sep 2021
Top Grossing · Health & Fitness · iPad View chart ›
Peaked at #191 (August 30, 2021) · 2 archived captures · Jun 2021 – Aug 2021

Ratings Over Time

sampled from 11 archived captures
DateVersionRatingRatingsPrice
July 30, 2010 — — 14 $1.99
August 23, 2011 1.1.1 — 252 $2.99
January 17, 2012 — — 449 $2.99
January 23, 2013 — — 1,727 $4.99
December 12, 2017 3.5.1 ★ 4.8 1,360 $4.99
December 14, 2017 3.6 ★ 4.8 1,389 $4.99
December 18, 2017 3.6.1 ★ 4.8 1,443 $4.99
December 10, 2018 — ★ 4.8 4,597 $4.99

From archived App Store listing data, captured by the Wayback Machine.

Archived Reviews

8 of 25
Worth the Money
     
by Topcat1217 · July 2, 2026

Flexible work out timer.

App update ruined everything!
     
by Mahonskie · June 26, 2026

I pay for seconds pro, I work in fitness and the app update made it so that I can’t pair it with my Apple watch. I use this app on my watch for work daily. This has been a HUGE inconvenience. So very frustrating -_-

AWESOME!
     
by MFMFB82 · June 23, 2026

I have been using Seconds Pro as a practice timer for my football team for many, many years. Awesome!

Fantastic
     
by Racewalker2 · July 12, 2026

My go to app for HIIT, love it. One concern the ability to change work out after you creat it.

A big help
     
by Eezzster · June 24, 2026

This app has helped me greatly to organize the time that I spend with the exercises in my workouts. I can focus better on the exercises and not so much on counting.

Great interval app
     
by FogoDorado · July 9, 2026

Easy to use, great for making personalized workouts

Build your own workout
     
by MinnieCooper11S · July 2, 2026

Love this app and have used it for years. I cannot count out my own workouts; boring and tedious. But this app lets you create your own workout, time it, build breaks and rest, circuits, etc. fantastic for personal sets - turns your at home experience into a time bounded worthwhile class of one.

Great Training App
     
by Dennis.Meek · June 20, 2026

I use the app for kickboxing, core workout and an entire host of other timed events. It’s easy to create custom timers and the pre-loaded timers are great s well.

Period reviews recovered from Apple's customer-review feeds via the Wayback Machine.