Comparison

ChainFlow vs Custom Interval Workout Timer

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

Head to head
About

ChainFlow

Create highly customized interval timers for any routine, from HIIT workouts to study sessions. Set unique work and rest periods for each segment, with clear audio cues and a distraction-free interface. Save your routines for easy access and hands-free operation.

Highlights
  • Custom interval chaining
  • Adjustable work/rest times per interval
  • Clear audio cues
  • Hands-free operation
  • Screen-off functionality
  • Routine saving
  • Dark interface
Features
Read full description

A custom interval timer for routines where every interval can be different. Most workout timers are built around repeating the same work and rest periods. ChainFlow lets you build the exact sequence you need, with individual timing for every step. Create HIIT workouts, circuit training sessions, stretching and mobility routines, boxing rounds, exercise sequences, drawing practice, focus sessions, and more. BUILD ANY ROUTINE Add as many intervals as you need. Give each one its own name and timing, then drag them into the exact order you want. START FAST WITH TEMPLATES Begin with ready-made HIIT, Tabata, Boxing, Morning Mobility, Pomodoro, and Gesture Drawing templates—or start completely from scratch. Every template becomes a normal ChainFlow routine you can fully edit. HANDS-FREE TIMING Hit Start and focus on what you're doing instead of watching the clock. ChainFlow automatically moves through your sequence and gives you clear audio cues at each transition. • Works while your phone is locked or ChainFlow is in the background • Live Activities and Dynamic Island support • See your current interval and what comes next • Pause, skip forward, or return to the previous interval • Optional 3-2-1 countdown before starting • Works alongside music, podcasts, and other audio • Optional audio ducking during cues BUILD ONCE. USE IT AGAIN. Save your favorite routines, duplicate individual intervals or entire chains, reorder them anytime, and quickly adjust a routine for your next session. ChainFlow works especially well when your routine doesn't fit a rigid repeating timer: • Custom interval workouts • Circuit training • HIIT and Tabata • Stretching and mobility • Boxing and round training • Exercise and strength training • Yoga and meditation sequences • Gesture and figure drawing practice • Pomodoro and focus sessions Whether you're training, stretching, drawing, studying, or building a routine of your own, ChainFlow keeps the timing out of your head so you can stay in the flow.

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

Screenshots

ChainFlow4 screens
Custom Interval Workout Timer4 screens

Verdict

The call

The clearest difference is ads: ChainFlow at none against Custom Interval Workout Timer's shown. Custom Interval Workout Timer's advantage is update cadence (every 3 weeks 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. ChainFlow sells 1 one-off in-app purchase and Custom Interval Workout Timer sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ChainFlow ships an update every 2 months, Custom Interval Workout Timer every 3 weeks. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 7 level
ChainFlow versus Custom Interval Workout Timer: the parameters behind the verdict, then further details
ParameterChainFlowCustom Interval Workout Timer
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size22 MB7 MB
Age rating4+4+
DeveloperMichael Ebako-HodgsonMichael McGill apps llc

In-app purchases

1 purchases

ChainFlow

One-time1
  • ChainFlow Pro$4.99
2 purchases

Custom Interval Workout Timer

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$19.991 Year

Questions

Is ChainFlow free?
ChainFlow is free to download, with in-app purchases available.
Is Custom Interval Workout Timer free?
Custom Interval Workout Timer is free to download, with in-app purchases available.
Do ChainFlow or Custom Interval Workout Timer have ads?
Custom Interval Workout Timer shows ads; ChainFlow does not.
Which is updated more often, ChainFlow or Custom Interval Workout Timer?
ChainFlow ships an update every 2 months, and Custom Interval Workout Timer every 3 weeks. Most recently, ChainFlow was updated on September 17, 2026 and Custom Interval Workout Timer on September 10, 2026.

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