Comparison

Custom Interval Workout Timer vs Circuit Timer

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

Head to head
About

Custom Interval Workout Timer

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

Circuit Timer

Features
Read full description

Build custom interval training circuits and run them with precision timing, voice announcements, and haptic feedback. CREATE YOUR PERFECT WORKOUT Design circuits with unlimited intervals, each with its own name, duration, and alarm sound. Set loop counts on individual intervals or the entire circuit. Choose from 24 alarm sounds, enable voice countdown, or both. STAY IN THE ZONE A full-screen player with a progress ring, countdown timer, and interval timeline keeps you focused. The last 3 seconds pulse to keep you ready for what's next. Voice announcements call out interval names so you never have to look at your screen. NEVER MISS A BEAT Live Activities put your timer on the Lock Screen and Dynamic Island. Background notifications keep you on track even when you switch apps. Start circuits hands-free with Siri. APPLE WATCH Run circuits from your wrist with real-time heart rate zones, active calories, and haptic alerts. Your watch keeps going even when the screen dims with Always-On Display support. TRACK YOUR PROGRESS View workout history with streaks, completion stats, and total training time. Save workouts to Apple Health as High Intensity Interval Training sessions. FREE TO START - 1 circuit with full features โ€” alarms, haptics, voice, history CORE UPGRADE - Unlimited circuits - iCloud sync across devices - Apple Health integration PRO UPGRADE - Everything in Core - Apple Watch companion app Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Custom Interval Workout Timer4 screens
Circuit Timer3 screens

Verdict

The call

The clearest difference is ads: Circuit Timer at none against Custom Interval Workout Timer's shown. Custom Interval Workout Timer's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Custom Interval Workout Timer sells 2 in-app purchases, starting at $1.99 per month and Circuit Timer sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Custom Interval Workout Timer ships an update every 3 weeks, Circuit Timer monthly. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

Scorecard2 real differences ยท 4 level
Custom Interval Workout Timer versus Circuit Timer: the parameters behind the verdict, then further details
ParameterCustom Interval Workout TimerCircuit Timer
PriceFreeFree
Update frequencyEvery 3 weeks โ€” betterMonthly
AdsYesNo โ€” better
In-app purchasesYesYes
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS17.0 โ€” better26.0
Further details โ€” not scored
Size7 MB7 MB
Age rating4+4+
DeveloperMichael McGill apps llcLawman Services, LLC

In-app purchases

2 purchases

Custom Interval Workout Timer

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

Circuit Timer

One-time2
  • Core$2.99
  • Pro$4.99

Questions

Is Custom Interval Workout Timer free?
Custom Interval Workout Timer is free to download, with in-app purchases available.
Is Circuit Timer free?
Circuit Timer is free to download, with in-app purchases available.
Do Custom Interval Workout Timer or Circuit Timer have ads?
Custom Interval Workout Timer shows ads; Circuit Timer does not.
Which is updated more often, Custom Interval Workout Timer or Circuit Timer?
Custom Interval Workout Timer ships an update every 3 weeks, and Circuit Timer monthly. Most recently, Custom Interval Workout Timer was updated on September 10, 2026 and Circuit Timer on September 17, 2026.

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