Comparison

Interval Timer Plus vs Interval Timer by STRNTH

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

Head to head
About

Interval Timer Plus

This versatile timer app offers a simple yet powerful way to manage timed activities. Customize multiple intervals with individual colors and sounds, and save them as presets for quick access. It's designed for ease of use and visibility, even from a distance, and works seamlessly in the background.

Highlights
  • Customizable intervals
  • Named intervals with voice readout
  • Individual colors and sounds
  • Count time or repetitions
  • Unlimited presets
  • Works in background
  • Full screen color coding
Features
Read full description

Free, simple and easy to use all purpose Interval Timer SIMPLE AND FREE INTERVAL TIMER + 1-Tap Quickstart + No signup required, download and get going immediately GLANCEABLE + Very Big Fonts, visible from everywhere + Full screen color coding, works like a traffic light right in front of you + Portrait or landscape, always uses the full screen space POWERFUL ADVANCED PRESETS + Multiple intervals, each individually customizable + Name your intervals and have Interval Timer read it out to you + Individual colors and sounds + Count time or repetitions + Unlimited amount of presets ACCESSIBLE + Works with locked screen or while in another app + Reads out the interval name, so you know exactly what’s on + Vibration or silent mode, for the times when you need to tune it down + Works great with headphones and your own music + Supports dark and light mode REPEAT YOUR ROUTINE + Prepare and save your settings in presets + Pick your presets and start with just 1-tap OPTIMIZE ALL OF YOUR ACTIVITIES + Tabata timer + HIIT training + Crossfit + Circuit training + Fitness routines + Home workouts + Boxing round timer + Calisthenics circuit timer

About

Interval Timer by STRNTH

Features
Read full description

Interval Timer by STRNTH is a free interval timer for HIIT, Tabata, EMOM, AMRAP, boxing rounds, running intervals, stretching and more. Build any timer you want with no fixed structure, then run it hands-free and read it from across the room. BUILD ANY TIMER - Add as many steps as you like, each with its own label, duration, colour, sound and voice. - Group steps into repeat blocks so a round loops as many times as you need. - Link separate timers together to chain a warm-up, workout and cool-down into one session. - Start from a template: Couch to 5K, Tabata, HIIT, 7 minute workout, EMOM, AMRAP, boxing rounds, Pomodoro, box breathing and full body stretch. RUN IT HANDS-FREE - A giant readout inside a progress ring, sized to read from across the gym. - Full-screen colour per step so you know your phase at a glance. - Voice reads each step and announces what is next before it arrives. - Sound cues on the last three seconds, plus beep, go, switch, rest, bell, horn, gong and whistle tones. Import your own sounds too. - Optional spoken 3-2-1 countdown, a cadence metronome from 60 to 180 BPM and haptic feedback. - Choose what the screen shows: interval time, total time, interval count, the clock or heart rate. MORE TOOLS - A countdown tab with quick presets for a fast single timer. - A stopwatch with laps that highlight your fastest and slowest split. - Light and dark themes and your own custom step colours. - Share a timer as a link or a file, and import timers others send you. ACROSS YOUR DEVICES - An Apple Watch companion runs your timers on the wrist with colour and haptics. - Pair a Bluetooth heart rate strap to see live BPM, zones and more while you train. - Save finished sessions to Apple Health as workouts. - Back up your timers to your private iCloud. FREE, WITH A ONE-TIME UPGRADE Interval Timer is free and supported by ads. A single 9.99 purchase removes ads for good. No accounts, no subscriptions, no cloud sign-in. Your timers stay on your device. Part of the STRNTH family of training apps.

Screenshots

Interval Timer Plus4 screens
Interval Timer by STRNTH4 screens

Verdict

The call

The clearest difference is ads: Interval Timer Plus at none against Interval Timer by STRNTH's shown. Interval Timer by STRNTH's advantage is update cadence (every 10 days vs every 2 months). On price, in-app purchases, 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

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

UpkeepUpdate frequency

Interval Timer Plus ships an update every 2 months, Interval Timer by STRNTH every 10 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Interval Timer Plus versus Interval Timer by STRNTH: the parameters behind the verdict, then further details
ParameterInterval Timer PlusInterval Timer by STRNTH
PriceFreeFree
Rating4.9 (6.3K ratings) — better—
Positive reviews95.2% of reviews—
Number of ratings6.3K — better—
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple WatchiPhone, iPad, iPod, Apple Watch
Requires iOS15.0 — better15.1
Further details — not scored
Size24 MB55 MB
Age rating4+12+
DeveloperSu-Au HwangNext Big Leap Ltd

Bugs and requests

Interval Timer Plus

Reported bugs

1 issue
  • Audio alerts not working when app is in the background

Requested features

2 requests
  • Support for Apple Watch integration
  • Ability to delete saved workouts

Interval Timer by STRNTH

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Interval Timer Plus

One-time1
  • Remove Ads$2.99
1 purchases

Interval Timer by STRNTH

One-time1
  • Remove ads$9.99

Questions

Is Interval Timer Plus free?
Interval Timer Plus is free to download, with in-app purchases available.
Is Interval Timer by STRNTH free?
Interval Timer by STRNTH is free to download, with in-app purchases available.
Do Interval Timer Plus or Interval Timer by STRNTH have ads?
Interval Timer by STRNTH shows ads; Interval Timer Plus does not.
Which is updated more often, Interval Timer Plus or Interval Timer by STRNTH?
Interval Timer Plus ships an update every 2 months, and Interval Timer by STRNTH every 10 days. Most recently, Interval Timer Plus was updated on November 4, 2026 and Interval Timer by STRNTH on October 31, 2026.

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