Comparison

Seconds Interval Timer vs Interval

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

Head to head
About

Seconds Interval Timer

This app provides a versatile interval timer for various workout types like Tabata, HIIT, and circuit training. It features a clear, full-screen display, customizable alerts, and background operation. Users can also utilize a stopwatch and countdown timer, with integration for Apple Health.

Highlights
  • Full-screen colored display
  • Templates for HIIT, Tabata, Circuit Training
  • Voice and audio alerts
  • Music assignment per interval
  • Background operation
  • Apple Health integration
  • Stopwatch and countdown timer
Features
Read full description

Seconds 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 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 reads your body measurements and year of birth from Health to estimate calories burned. FREE TO TRY, ONE PAYMENT TO UNLOCK - Everything is available from the first launch. Build any timer and run it. - Each timer locks after you run it once. A single in-app purchase removes the lock on every timer you make. SECONDS AND SECONDS PRO - Seconds Pro is the same app, paid once up front, with nothing to unlock. 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

Interval

Features
Read full description

The interval timer that never lets you down. Built for HIIT, Tabata, boxing, and CrossFit - set your intervals, press start, train. SET YOUR WORKOUT Work duration, rest duration, and rounds. Quick-access buttons let you jump to common settings instantly. Build structured workout programs with multiple exercises, each with its own timing and rest period. TIMER MODES The standard interval mode is free. Pro adds EMOM (every minute on the minute), AMRAP (as many rounds as possible), For Time, and Pyramid. Each mode has its own controls and post-workout stats. ALWAYS RELIABLE Reliable timers that keep running in the background, on the Lock Screen, in Silent mode, and during Focus. Beeps and haptics fire on every transition, every time. LIVE ACTIVITY & DYNAMIC ISLAND A live countdown on your Lock Screen - no need to unlock mid-workout. Tap the Dynamic Island to pause or stop without opening the app. APPLE WATCH & AIRPODS PRO The Watch app mirrors your workout with its own countdown, progress ring, and haptics. Live heart rate from Apple Watch or AirPods Pro shows in the app during your session. CONTROL CENTER WIDGET Add Interval-Timer to Control Center. One tap starts your last-used workout - no need to open the app. WORKOUT PROGRAMS Build programs with individual exercises, each with its own work and rest timing. Add reference photos so you always know what to do. Exercise names are announced by voice at each transition - train eyes-free. SHARE & IMPORT WORKOUTS Share your workout programs with friends via link. Import shared workouts with a one-tap preview. Save up to 3 programs for free - unlimited with Pro. STREAKS & TRENDS Track your consecutive workout days with streak reminders. View weekly frequency, monthly duration, and calorie trends with charts. Export your full workout history as CSV. ACHIEVEMENT BADGES Earn badges for workout milestones: 7, 30, and 100-day streaks plus 10, 50, 100, and 500 total workouts. Celebrate with haptic feedback after each session. FEEDBACK & AUDIO 3-2-1 countdown haptics before each transition. Custom haptic patterns for intervals and workout completion. Voice announcements for exercise names and round numbers. Your music keeps playing - the app ducks it during announcements. HEALTH & PRIVACY HealthKit integration logs every completed workout as a HIIT session in Apple Health. Heart rate data stays on your device. Anonymous crash reports and aggregate feature usage are collected via Firebase - no Health data, no advertising ID, no account. PRO UNLOCK - ONE-TIME, NO SUBSCRIPTION The core app is free. An optional one-time Pro unlock (no subscription) adds the EMOM, AMRAP, For Time, and Pyramid modes, the AI Coach, the exercise packs (cardio, strength, core, boxing, yoga, mobility - with reference photos and form cues), the Pro sound packs (boxing bell and gym buzzer), and unlimited programs. Buy once, keep it forever. Free to start. Optional one-time Pro unlock. No subscription, no account.

Screenshots

Seconds Interval Timer4 screens
Interval3 screens

Verdict

The call

The clearest difference is update cadence: Seconds Interval Timer at monthly against Interval's every 2 months. Seconds Interval Timer also leads on iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases 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

Both are free to download. Seconds Interval Timer sells 1 one-off in-app purchase and Interval sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Seconds Interval Timer ships an update monthly, Interval every 2 months. The most recent releases landed on September 25, 2026 and September 15, 2026 respectively.

Scorecard2 real differences · 8 level
Seconds Interval Timer versus Interval: the parameters behind the verdict, then further details
ParameterSeconds Interval TimerInterval
PriceFreeFree
Rating4.7 (24K ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings24K — better—
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS18.0 — better26.0
Further details — not scored
Size95 MB78 MB
Age rating4+4+
DeveloperRunloop LtdFelix Thron

Bugs and requests

Seconds Interval Timer

Reported bugs

2 issues
  • Timer sometimes stops working unexpectedly
  • Issues with restoring purchases on new devices

Requested features

5 requests
  • Ability to change beep/alert volume independently
  • Option to delay transition between intervals
  • Sync workouts across devices
  • More preset workout templates
  • Heart rate monitoring integration

Interval

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Seconds Interval Timer

One-time1
  • Advanced Version$7.99
1 purchases

Interval

One-time1
  • Interval Timer Pro$3.99

Questions

Is Seconds Interval Timer free?
Seconds Interval Timer is free to download, with in-app purchases available.
Is Interval free?
Interval is free to download, with in-app purchases available.
Do Seconds Interval Timer or Interval have ads?
Neither Seconds Interval Timer nor Interval shows ads.
Which is updated more often, Seconds Interval Timer or Interval?
Seconds Interval Timer ships an update monthly, and Interval every 2 months. Most recently, Seconds Interval Timer was updated on September 25, 2026 and Interval on September 15, 2026.

Other comparisons