Comparison

Seconds Pro Interval Timer vs TempoFlow | Routine Builder

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

TempoFlow | Routine Builder

This app helps users build and time custom workout routines with precision. It's designed for instructors and enthusiasts of time-based fitness like Lagree and Pilates, offering a simple, visual interface for seamless session management.

Highlights
  • Build custom timed routines
  • Run classes on iPhone/Apple Watch
  • Save and reuse routines
  • Second-by-second timing accuracy
  • Visual, tap-to-run interface
Features
Read full description

Stop juggling a stopwatch mid-class or forgetting your routines. TempoFlow is the Lagree timer and routine planner built for Lagree, Pilates, Solidcore, and HIIT instructors who demand precision every class. Whether you're cueing a packed Lagree class or coaching one-on-one, TempoFlow keeps your timing sharp and your routines organized, so you teach with confidence, not chaos. TempoFlow helps you: • Build and save custom Lagree routines with timed exercises, spring loads, and rest intervals • Manage your routine library - organize, duplicate, and edit routines in seconds • Run class timers hands-free from your Apple Watch • Plan your full class schedule with routine sequencing built in • Track every second with a clean, tap-to-run timer interface The Lagree timer and routine planner instructors trust. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Seconds Pro Interval Timer4 screens
TempoFlow | Routine Builder4 screens

Verdict

The call

The clearest difference is price: TempoFlow | Routine Builder at Free against Seconds Pro Interval Timer's $7.99. Seconds Pro Interval Timer's advantage is in-app purchases (none vs 1) and ratings volume (12K vs 59). On rating, update cadence, ads and device support 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

TempoFlow | Routine Builder is free to download; Seconds Pro Interval Timer costs $7.99 up front. TempoFlow | Routine Builder sells 1 in-app purchase, starting at $14.99 per year. Seconds Pro Interval Timer asks for nothing beyond the download.

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 4.7 for TempoFlow | Routine Builder. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 59, 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 70% of TempoFlow | Routine Builder's.

UpkeepUpdate frequency

Seconds Pro Interval Timer ships an update fortnightly, TempoFlow | Routine Builder every 3 weeks. Both last shipped on September 26, 2026.

Scorecard6 real differences · 5 level
Seconds Pro Interval Timer versus TempoFlow | Routine Builder: the parameters behind the verdict, then further details
ParameterSeconds Pro Interval TimerTempoFlow | Routine Builder
Price$7.99Free — better
Rating4.8 (12K ratings) — better4.7 (59 ratings)
Positive reviews79.9% of reviews — better70.0% of reviews
Number of ratings12K — better59
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
Best chart rank#13 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS18.0 — better18.1
Further details — not scored
Size94 MB102 MB
Age rating4+4+
DeveloperRunloop LtdElectric Bloom LLC

Customer experience

Seconds Pro Interval Timer

All ratings12,056 ratings
Positive94.7%
Neutral1.9%
Negative3.4%
Written reviews1,506 reviews
Positive79.9%
Neutral6.0%
Negative14.1%

TempoFlow | Routine Builder

All ratings59 ratings
Positive93.2%
Neutral1.7%
Negative5.1%
Written reviews10 reviews
Positive70.0%
Neutral10.0%
Negative20.0%

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

TempoFlow | Routine Builder

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Seconds Pro Interval Timer

No in-app purchases

1 purchases

TempoFlow | Routine Builder

Subscriptions1
  • Pro Yearly14 Days trial$14.991 Year

Questions

Is Seconds Pro Interval Timer free?
Seconds Pro Interval Timer costs $7.99, with no in-app purchases.
Is TempoFlow | Routine Builder free?
TempoFlow | Routine Builder is free to download, with in-app purchases available.
Which has better reviews, Seconds Pro Interval Timer or TempoFlow | Routine Builder?
Seconds Pro Interval Timer is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while TempoFlow | Routine Builder averages 4.7 from 59 ratings.
Do Seconds Pro Interval Timer or TempoFlow | Routine Builder have ads?
Neither Seconds Pro Interval Timer nor TempoFlow | Routine Builder shows ads.
Which is updated more often, Seconds Pro Interval Timer or TempoFlow | Routine Builder?
Seconds Pro Interval Timer ships an update fortnightly, and TempoFlow | Routine Builder every 3 weeks. Most recently, Seconds Pro Interval Timer was updated on September 26, 2026 and TempoFlow | Routine Builder on September 26, 2026.

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