Comparison

Modern Interval Workout Timer vs VoltTimer

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

Head to head
About

Modern Interval Workout Timer

This versatile timer supports HIIT, Tabata, circuit training, and combat sports like boxing. Customize visuals, sounds, and presets for a personalized workout experience. Track and replay past sessions with a clean, ad-free interface.

Highlights
  • Interval and regular timer modes
  • Customizable themes and sounds
  • Large, bold visuals
  • Pre-made and saved presets
  • Workout log and replay
  • Ad-free experience
Features
Read full description

This workout timer is ideal for your HIIT (high intensity interval training), circuit training, Tabata routines and is compatible with many more sports. For instance it also works perfectly for training or sparring in combat sports or martial arts like boxing, kick boxing, muay thai, MMA and more as it'll keep track of your rounds. Finally, it is also great for all bodyweight exercices, at home or at the gym. The app features a simple yet powerful user interface. You can get started in a second, but if you want to go further you can really make it your own: - Regular timer, interval timer, count down... if you want to time something, the app has you covered! - Many different visual themes. You can even create your own, changing colors, fonts and more. - Personalise all sounds and warnings. - Very large and bold visuals working both in portrait and landscape mode. - Use pre-made timers (boxing rules, Tabata 20/10, HIIT 30/30 and more), or save your own presets. - Keep track of your workouts with a full log of completed trainings. You can even replay them. - Simple and clean interface that works perfectly in light or dark mode. On top of this, the app is ad-free to have a more stable and clutter-less experience.

About

VoltTimer

Features
Read full description

VoltTimer is a clean, no-distractions interval timer built for serious training. Set your work and rest intervals, hit start, and focus — VoltTimer handles the rest. Built for every training style: HIIT, Tabata, and circuit workouts Strength training with custom rest timers Custom presets for your go-to routines Features: Customizable work & rest intervals Audio + haptic phase alerts 5-second end-of-phase countdown warning Adjustable start delay to set up before the clock runs Color themes to match your style Simple enough for beginners. Powerful enough for athletes.

Screenshots

Modern Interval Workout Timer4 screens
VoltTimer4 screens

Verdict

The call

The clearest difference is update cadence: Modern Interval Workout Timer at every 4 days against VoltTimer's every 3 weeks. 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. Modern Interval Workout Timer sells 3 in-app purchases, starting at $0.99 per month and VoltTimer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Modern Interval Workout Timer ships an update every 4 days, VoltTimer every 3 weeks. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 9 level
Modern Interval Workout Timer versus VoltTimer: the parameters behind the verdict, then further details
ParameterModern Interval Workout TimerVoltTimer
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, iPad — better
Requires iOS18.0 — better18.6
Further details — not scored
Size9 MB6 MB
Age rating4+4+
DeveloperMarc GauthierCherneyWerk LLC

In-app purchases

3 purchases

Modern Interval Workout Timer

Subscriptions2
  • Premium (monthly subscription)$0.991 Month
  • Premium (yearly subscription)$4.991 Year
One-time1
  • Lifetime premium$14.99
1 purchases

VoltTimer

One-time1
  • VoltTimer Pro$3.99

Questions

Is Modern Interval Workout Timer free?
Modern Interval Workout Timer is free to download, with in-app purchases available.
Is VoltTimer free?
VoltTimer is free to download, with in-app purchases available.
Do Modern Interval Workout Timer or VoltTimer have ads?
Neither Modern Interval Workout Timer nor VoltTimer shows ads.
Which is updated more often, Modern Interval Workout Timer or VoltTimer?
Modern Interval Workout Timer ships an update every 4 days, and VoltTimer every 3 weeks. Most recently, Modern Interval Workout Timer was updated on October 12, 2026 and VoltTimer on October 7, 2026.

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