Comparison

IntervalTimer vs DefectiveIntervalTimer

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

Head to head
About

IntervalTimer

This app provides a minimalist yet powerful interval timer for high-intensity workouts like HIIT, Tabata, and EMOM. It features professional voice guidance, customizable templates, and a clear, large display for easy readability during exercise.

Highlights
  • Professional voice guidance
  • 20+ built-in workout templates
  • Customizable interval presets
  • Extra-large, readable display
  • Three-color phase coding
  • Workout session tracking
Features
Read full description

Every Round, Get Stronger. A minimalist yet powerful interval timer designed for HIIT, Tabata, EMOM, and all high-intensity workouts.  Now featuring 20+ built-in templates and professional voice guidance. Set your intervals in seconds with our precision vertical ruler.  Start training with one tap.  See your countdown from across the room with our extra-large display—perfect for the gym floor or yoga mat. ◆ BUILT FOR REAL WORKOUTS • Professional Voice Guidance: Male and female voice options for Work, Rest, and Round transitions • Haptic feedback for key phase transitions • Pause, resume, and recovery from interruptions • Auto time correction when returning from background • Background audio cues (Coming Soon): Will work seamlessly with your music ◆ READY-TO-USE TEMPLATES • 20+ Professional Templates built-in • Tabata Classic (20s work / 10s rest × 8) • EMOM 10 (Every Minute on the Minute) • Sprint Starter (Quick high-intensity intervals) • Create and save your own custom presets ◆ PRECISION INTERVAL EDITING • Vertical ruler with 1-second precision • Smart haptic feedback on every tick • Floating value display—your finger never blocks the numbers • Adjust Work, Rest, Intervals, and Rounds with intuitive controls ◆ CRYSTAL-CLEAR COUNTDOWN • Extra-large timer digits readable from 10+ feet away • Landscape mode for maximum visibility • Three-color phase coding: Orange (Work) / Blue (Rest) / Purple (Round Rest) • Always-on display keeps the screen active during workouts ◆ COMPLETE WORKOUT TRACKING • Session summary: total time, work time, rest time, completion rate • Local workout history • Review and repeat past sessions ◆ DESIGNED FOR ATHLETES Perfect for HIIT, CrossFit, circuit training, running intervals, boxing rounds, swimming sets, yoga flows, stretching routines, and any activity that needs precise timing. Train smarter. Train harder.  Train with Intervals Timer. emom,gym,fitness,free,custom,simple,stopwatch Privacy Policy :https://hiittimer.pages.dev/Privacy Terms of Service:https://hiittimer.pages.dev/Terms

About

DefectiveIntervalTimer

Features
Read full description

NO ADS Defective Interval Timer makes it easy to create and run timed interval sessions for workouts, stretching, training, recovery, practice, and everyday activities. Choose your work time, rest time, number of rounds, and alert volume, then start the timer and follow clear visual, audio, vibration, and notification cues as you move through each interval. Use quick settings to build your own timing pattern or choose from included Northwick Fitness-inspired presets for endurance training, superset/power sessions, and pre- or post-workout stretching. FEATURES • Custom work and rest intervals • Up to 99 rounds • Quick timer setup • Northwick Fitness-inspired presets • Pause and resume controls • Hold-to-reset protection • Clear work, rest, paused, and finished indicators • Audio alerts for interval changes • Vibration feedback • Adjustable alert volume • Background interval notifications • Displays elapsed and total session time • Optional $1 Support Developer purchase • Works without an account • No internet connection required for timer use • No ads The optional Support Developer purchase does not unlock content, remove restrictions, change timer features, or provide any advantage. Whether you are exercising, stretching, studying, practicing, or completing timed tasks, Defective Interval Timer helps keep every session organized.

Screenshots

IntervalTimer4 screens
DefectiveIntervalTimer4 screens

Verdict

The call

The clearest difference is in-app purchases: DefectiveIntervalTimer at none against IntervalTimer's 3. IntervalTimer's advantage is iOS requirement (17.0 vs 26.5). On price, update cadence, ads 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. IntervalTimer sells 3 in-app purchases, starting at $1.99 per month. DefectiveIntervalTimer asks for nothing beyond the download.

UpkeepUpdate frequency

IntervalTimer ships an update every 10 days, DefectiveIntervalTimer every 3 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
IntervalTimer versus DefectiveIntervalTimer: the parameters behind the verdict, then further details
ParameterIntervalTimerDefectiveIntervalTimer
PriceFreeFree
Rating3.7 (3 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better26.5
Further details — not scored
Size18 MB1 MB
Age rating4+4+
DeveloperWD StudioDefectiveRobot LLC

In-app purchases

3 purchases

IntervalTimer

Subscriptions2
  • PRO Monthly $1.99$1.991 Month
  • PRO Annual $19.99$9.991 Year
One-time1
  • Interval Timer Pro Lifetime$39.99
None

DefectiveIntervalTimer

No in-app purchases

Questions

Is IntervalTimer free?
IntervalTimer is free to download, with in-app purchases available.
Is DefectiveIntervalTimer free?
DefectiveIntervalTimer is free to download, with no in-app purchases.
Do IntervalTimer or DefectiveIntervalTimer have ads?
Neither IntervalTimer nor DefectiveIntervalTimer shows ads.
Which is updated more often, IntervalTimer or DefectiveIntervalTimer?
IntervalTimer ships an update every 10 days, and DefectiveIntervalTimer every 3 weeks. Most recently, IntervalTimer was updated on October 8, 2026 and DefectiveIntervalTimer on October 7, 2026.

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