Comparison

Custom Interval Workout Timer 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

Custom Interval Workout Timer

Features
Read full description

The ultimate workout timer for any training style. Whether you're doing Tabata sprints, EMOM weightlifting, AMRAP circuits, HIIT cardio, or boxing rounds — Custom Interval Workout Timer has you covered. TIMER TYPES • Tabata — Classic 20s work / 10s rest intervals • EMOM — Every Minute on the Minute • AMRAP — As Many Rounds As Possible with countdown • HIIT — Customizable work/rest intervals • Boxing — Round timer with rest periods • For Time — Count up with target time • Custom — Build any interval sequence you want POWERFUL FEATURES • Timer Chains — Link multiple timers to run back-to-back • Preset Library — 15+ ready-to-go workouts for beginners and pros • Manual Advance — Pause between intervals and go at your own pace • Adjustable Prep Time — Get ready before each workout starts AUDIO & HAPTICS • Voice Announcements — Hear phase changes and round counts • Countdown Beeps — Audio cues as intervals end • 7 Beep Sounds — Choose a different sound for each timer type • Haptic Feedback — Feel transitions even with sound off TRACK YOUR PROGRESS • Workout History — Log every completed session • Monthly Calendar — See your training at a glance • Weekly Stats — Track workouts and total training time STOPWATCH • Precision stopwatch with lap tracking • Fastest and slowest lap highlighting SHARE & CUSTOMIZE • Share timers via QR code or link • Import timers from friends • 8 accent colors and dark/light/system themes • Keep Screen On mode for hands-free training APPLE WATCH (Pro) • Mirror and control timers from your wrist APPLE HEALTH • Automatically log workouts to Apple Health • Contribute to your Activity Rings Download now and start training smarter. Terms of Use: https://sites.google.com/view/michaelmcgillapps/terms-of-service Privacy Policy: https://sites.google.com/view/michaelmcgillapps/privacy-policy

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

Custom Interval Workout Timer4 screens
Interval Timer by STRNTH4 screens

Verdict

The call

The clearest difference is update cadence: Interval Timer by STRNTH at every 10 days against Custom Interval Workout Timer's every 3 weeks. Interval Timer by STRNTH also leads on iOS requirement (15.1 vs 17.0). 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. Custom Interval Workout Timer sells 2 in-app purchases, starting at $1.99 per month 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

Custom Interval Workout Timer ships an update every 3 weeks, Interval Timer by STRNTH every 10 days. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 4 level
Custom Interval Workout Timer versus Interval Timer by STRNTH: the parameters behind the verdict, then further details
ParameterCustom Interval Workout TimerInterval Timer by STRNTH
PriceFreeFree
Update frequencyEvery 3 weeksEvery 10 days — better
AdsYesYes
In-app purchasesYesYes
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS17.015.1 — better
Further details — not scored
Size7 MB55 MB
Age rating4+12+
DeveloperMichael McGill apps llcNext Big Leap Ltd

In-app purchases

2 purchases

Custom Interval Workout Timer

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$19.991 Year
1 purchases

Interval Timer by STRNTH

One-time1
  • Remove ads$9.99

Questions

Is Custom Interval Workout Timer free?
Custom Interval Workout Timer 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 Custom Interval Workout Timer or Interval Timer by STRNTH have ads?
Both Custom Interval Workout Timer and Interval Timer by STRNTH show ads.
Which is updated more often, Custom Interval Workout Timer or Interval Timer by STRNTH?
Custom Interval Workout Timer ships an update every 3 weeks, and Interval Timer by STRNTH every 10 days. Most recently, Custom Interval Workout Timer was updated on September 30, 2026 and Interval Timer by STRNTH on October 5, 2026.

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