Comparison

Seconds Pro Interval Timer vs SH1FT

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

Head to head
About

Seconds Pro Interval Timer

This interval timer app is designed for high-intensity interval training (HIIT), Tabata, and circuit training workouts. It features a large, color-coded display, customizable interval names, and background operation. It also integrates with Apple Health to track your fitness data.

Highlights
  • Full screen colored display
  • Templates for HIIT, Tabata, Circuit Training
  • Speaks interval names and provides warnings
  • Assign music per interval
  • Runs in background
  • Share interval timers
  • Apple Health integration
Features
Read full description

Seconds Pro is an interval timer for HIIT, Tabata, EMOM, circuits and any workout built from timed intervals. It calls each interval out loud, keeps running with the screen off, and runs on iPhone, iPad and Apple Watch. Apple has featured it, and Joe Wicks, The Body Coach, has said it is the fitness app he uses more than any other. BUILD ANY WORKOUT - Start from a HIIT, Tabata or circuit template, or build a timer from scratch with sets, rounds and intervals of different lengths. - Chain timers into one compound timer, so a warm-up flows into the main set and then a cool-down. - Color-code every interval so you know what is coming before the beep. - Share a timer with a friend in one tap. HEAR IT, DON'T WATCH IT - Voice cues call out each interval by name and warn you before the next one starts. - Beeps and bells are there too if you would rather not be talked at. - Play your own music, per timer or per interval. Cues duck the music and it comes back up when they are done. - The timer keeps going in the background while you use other apps or the screen sleeps. ON THE GYM FLOOR - A full-screen, color-coded display you can read from across the room, in portrait or landscape. On iPad it uses the whole screen. - A lock button stops a stray tap from pausing your set. APPLE WATCH - Seconds Pro runs on the watch by itself, so the phone can stay in the locker. Timers you build on the phone sync to the wrist, and Quick Intervals builds a basic circuit on the watch itself. MORE TIMERS - A stopwatch that marks your best and worst laps. - A countdown timer with five preset durations (three on Apple Watch). APPLE HEALTH - Save workouts and mindful sessions to Health. With a heart rate monitor connected, Seconds Pro reads your body measurements and year of birth from Health to estimate calories burned. PAID ONCE, NOTHING TO UNLOCK - Seconds Pro is paid for up front. Every feature is included and every timer you make can be run as many times as you like. SECONDS AND SECONDS PRO - Seconds is the free version of this app. It has the same features, but each timer locks after one run until a single in-app purchase unlocks it. The two are separate products and a purchase in one does not carry over to the other. If you bought Seconds Pro, download Seconds Pro. If you bought the unlock in Seconds, download Seconds and use Restore Purchases.

About

SH1FT

This app empowers group fitness instructors to create and deliver engaging live and online classes. It automates class structuring and cueing, saving instructors time and stress. Instructors can design unique workouts, mix formats, and teach anywhere.

Highlights
  • Automated class structuring and cueing
  • Create unique workout combinations
  • Teach live and online classes
  • Unlimited access to all workouts
  • Cross-format mash-ups
Read full description

Our market leading App allows Group Fitness Instructors to teach live and online classes like never before! We have four unique Group Fitness formats and each workout is taught using our App. The App automates the boring stuff (saving huge amounts of time and money) and gives Instructors an easy and fast way to create workouts that are unique to them. SH1FT Fitness Instructors are empowered to deliver engaging, personalised fitness classes where, when and how they want - with zero restrictions. App features: • The App structures the class for you and does the cueing and memorisation if you need it - saving you hours of prep work and taking the stress out of teaching so you can focus on the class in front of you and not what move is coming next. • Unlimited access to EVERY workout from your chosen format/s on the SH1FT App for no extra cost. • The ability to teach anywhere: you can deliver a class in any physical or virtual location that you wish. • Freedom to get creative! Use the SH1FT App to create workout combinations that suit the unique needs of your class. Plus if you are a SQUAD member in multiple SH1FT Fitness formats you have the freedom to create cross format mash-ups using the App.

Screenshots

Seconds Pro Interval Timer4 screens
SH1FT4 screens

Verdict

The call

Seconds Pro Interval Timer and SH1FT both sit at 4.8 stars, but that hides the real split: 80% of Seconds Pro Interval Timer's written reviews are positive against 20% of SH1FT's. Seconds Pro Interval Timer also leads on ratings volume (12K vs 7) and chart position (#10 vs unranked). SH1FT's advantage is price (Free vs $7.99) and iOS requirement (15.1 vs 18.0). On rating, update cadence, ads and in-app purchases 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

SH1FT is free to download; Seconds Pro Interval Timer costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Seconds Pro Interval Timer against 4.9 for SH1FT. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 80% of Seconds Pro Interval Timer's written reviews are positive against 20% of SH1FT's.

UpkeepUpdate frequency

Seconds Pro Interval Timer ships an update fortnightly, SH1FT every 3 weeks. The most recent releases landed on September 26, 2026 and June 4, 2026 respectively.

Scorecard6 real differences · 5 level
Seconds Pro Interval Timer versus SH1FT: the parameters behind the verdict, then further details
ParameterSeconds Pro Interval TimerSH1FT
Price$7.99Free — better
Rating4.8 (12K ratings)4.9 (7 ratings) — better
Positive reviews79.9% of reviews — better20.0% of reviews
Number of ratings12K — better7
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#10 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS18.015.1 — better
Further details — not scored
Size94 MB22 MB
Age rating4+4+
DeveloperRunloop LtdSH1FT Ltd

Customer experience

Seconds Pro Interval Timer

All ratings12,056 ratings
Positive94.7%
Neutral1.9%
Negative3.4%
Written reviews1,499 reviews
Positive79.9%
Neutral6.0%
Negative14.1%

SH1FT

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive20.0%
Neutral20.0%
Negative60.0%

Bugs and requests

Seconds Pro Interval Timer

Reported bugs

4 issues
  • Intervals randomly pausing or skipping
  • Music volume issues when launching the app
  • Inconsistent audio cues and countdown
  • Sync issues between devices

Requested features

6 requests
  • Ability to lock Apple Watch screen
  • Option to see more than just the next exercise
  • Fractional time settings (e.g. 7.74 seconds)
  • More voice/audio customization options
  • Improved sync between iPhone and iPad
Show 1 more
  • Calendar integration to track workouts

SH1FT

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Seconds Pro Interval Timer

No in-app purchases

None

SH1FT

No in-app purchases

Questions

Is Seconds Pro Interval Timer free?
Seconds Pro Interval Timer costs $7.99, with no in-app purchases.
Is SH1FT free?
SH1FT is free to download, with no in-app purchases.
Which has better reviews, Seconds Pro Interval Timer or SH1FT?
SH1FT is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while SH1FT averages 4.9 from 7 ratings.
Do Seconds Pro Interval Timer or SH1FT have ads?
Neither Seconds Pro Interval Timer nor SH1FT shows ads.
Which is updated more often, Seconds Pro Interval Timer or SH1FT?
Seconds Pro Interval Timer ships an update fortnightly, and SH1FT every 3 weeks. Most recently, Seconds Pro Interval Timer was updated on September 26, 2026 and SH1FT on June 4, 2026.

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