Comparison

HC HIIT Interval Timer vs Kaizen Timer

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

Head to head
About

HC HIIT Interval Timer

Create and manage custom interval training workouts with an integrated timer. Design workouts with specific actions, colors, names, and durations. Suitable for personal training or individual fitness routines.

Highlights
  • Create custom workouts
  • Integrated workout timer
  • Define actions with color, name, and duration
  • Use default workouts
  • Save and reuse workout routines
Features
Read full description

This application is made by volunteers, trying to help their trainer to make things easy with their workouts for the members of the Health Club from Novi Sad, Serbia, but it can be used by anyone on the App Store! With HC HIIT Interval Timer you can keep your workouts simple and in one place with an integrated timer inside every action of workout. The goal of the application is to prepare workouts that can be used later for training. You can freely use the default workouts from the application, and you can make new ones for yourself. The main features of the application are adding and using workouts. Every workout is built from actions. Every action has color, name, and number of seconds for action. We wish you to create your best workouts and maintain your health!

About

Kaizen Timer

Features
Read full description

Kaizen Timer is a customizable interval timer for boxing, HIIT, Tabata, treadmill workouts, strength training, and more. Build simple work–rest intervals or create advanced multi-phase workouts that match exactly how you train. Start quickly with ready-made presets, or customize every phase, round, work period, and rest period. FEATURES • Presets for popular training styles • Fully customizable work and rest intervals • Advanced phase sequencing for complex workouts • Clear visual and audio timers • Accurate round and phase tracking • Reliable timing when backgrounded or locked • Home Screen widgets for quick access • Light and dark mode support • Optional Apple Health integration for workouts and calorie estimation • Export completed workouts • Available in multiple languages, including: English, French, German, Italian, Russian, Spanish, Japanese, Chinese BUILT FOR CONSISTENCY Set your training intensity and let Kaizen Timer handle the structure. Timers stay accurate even during interruptions, helping you stay focused through every round. FREE TO USE All Kaizen Timer features are available for free. An optional support subscription helps fund ongoing development, but subscribing is never required to access features or content. Train smarter. Stay focused. Improve every round. Terms of Use: https://kaizentimerapp.com/terms.html Privacy Policy: https://kaizentimerapp.com/privacy.html

Screenshots

HC HIIT Interval Timer4 screens
Kaizen Timer4 screens

Verdict

The call

The clearest difference is update cadence: Kaizen Timer at every 3 days against HC HIIT Interval Timer's every 21 months. 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HC HIIT Interval Timer ships an update every 21 months, Kaizen Timer every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 9 level
HC HIIT Interval Timer versus Kaizen Timer: the parameters behind the verdict, then further details
ParameterHC HIIT Interval TimerKaizen Timer
PriceFreeFree
Rating4.2 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 21 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.6
Further details — not scored
Size2 MB3 MB
Age rating4+4+
DeveloperDejan DragicStefan Dasic

In-app purchases

None

HC HIIT Interval Timer

No in-app purchases

None

Kaizen Timer

No in-app purchases

Questions

Is HC HIIT Interval Timer free?
HC HIIT Interval Timer is free to download, with no in-app purchases.
Is Kaizen Timer free?
Kaizen Timer is free to download, with no in-app purchases.
Do HC HIIT Interval Timer or Kaizen Timer have ads?
Neither HC HIIT Interval Timer nor Kaizen Timer shows ads.
Which is updated more often, HC HIIT Interval Timer or Kaizen Timer?
HC HIIT Interval Timer ships an update every 21 months, and Kaizen Timer every 3 days. Most recently, HC HIIT Interval Timer was updated on October 24, 2026 and Kaizen Timer on October 25, 2026.

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