Comparison

Tabata Timer vs Kaizer for Coaches

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

Head to head
About

Tabata Timer

This app provides a versatile interval timer for high-intensity workouts like HIIT and Tabata. Users can create custom routines with adjustable work/rest times, sets, and cycles, and receive voice cues. It functions as a background companion to keep you focused during training.

Highlights
  • Customizable interval timers
  • HIIT and Tabata training support
  • Adjustable work and rest times
  • Set and cycle configuration
  • Interval naming
  • Background operation
  • Voice cues
Features
Read full description

Become better, faster, and stronger — together with Tabata Timer for Workouts! A simple yet powerful HIIT and Tabata timer for cardio, CrossFit, and any high-intensity training. Beginners can start with one tap, while advanced users get full control over every interval. Create custom workouts: adjust work and rest times, sets, and cycles; add interval names, background music, and voice cues. The app runs smoothly in the background, supports vibration, music ducking, and much more. More than just a stopwatch — your personal workout partner that keeps you focused, motivated, and on track anywhere — at home, in the gym, or outdoors. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Kaizer for Coaches

Features
Read full description

Kaizer is the app for trainers you want within reach. Manage every client, build professional training plans and keep the conversation in one place, from your phone. YOUR CLIENTS, ORGANISED Your whole roster in one place. Find any client in seconds, open their profile and follow their progress: adherence, completed sessions, streak, weight, goals and weak points. Add private notes so nothing slips. PLANS THAT ADAPT Build reusable programs and assign them to a client in one tap. Organise by weeks and sessions, and write routines with everything you need: sets, reps, load, rest, supersets, circuits and dropsets. Every exercise ships with an illustration of the muscle it works. SESSIONS IN DETAIL Define each movement precisely and leave notes on the whiteboard (warm-up, cues, cool-down) so your client knows exactly what to do. DIRECT CHAT WITH YOUR CLIENTS Talk to each one inside the app: messages, photos, files and voice notes. Keep the follow-up close without leaning on other apps. AI ASSISTANT Your coaching copilot. Ask it to draft routines, follow up on clients, look up exercises and explain how your business is doing. Ask it anything, whenever. LET THEM FIND YOU Publish your profile on the Kaizer marketplace: clients who do not have a trainer yet see how you work, your specialties and whether you coach online, in person or both. You can also share your personal link to bring clients in from outside. GROW YOUR BUSINESS Invite people to your list and measure what matters: adherence and retention. EVERYTHING IN ONE PLACE - Home dashboard with your day at a glance - Alerts for clients with no routine assigned - Exercise library with illustrations - Sign in with Apple and Google - Notifications when your clients train or message you Kaizer is built for personal trainers, coaches and fitness professionals who want to spend less time on admin and more time coaching. Please note: the app interface is currently in Spanish. English and Portuguese versions are in the works. Terms of Service: https://kaizer.app/en/terms-and-conditions Privacy Policy: https://kaizer.app/en/privacy-policy

Screenshots

Tabata Timer4 screens
Kaizer for Coaches4 screens

Verdict

The call

The clearest difference is in-app purchases: Kaizer for Coaches at none against Tabata Timer's 5. Kaizer for Coaches also leads on ads (none vs shown). Tabata Timer's advantage is device support (4 vs 2). On price, update cadence 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. Tabata Timer sells 5 in-app purchases, starting at $1.49 per month. Kaizer for Coaches asks for nothing beyond the download.

UpkeepUpdate frequency

Tabata Timer ships an update every 10 days, Kaizer for Coaches weekly. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
Tabata Timer versus Kaizer for Coaches: the parameters behind the verdict, then further details
ParameterTabata TimerKaizer for Coaches
PriceFreeFree
Rating4.9 (9.2K ratings) — better—
Positive reviews98.4% of reviews—
Number of ratings9.2K — better—
Update frequencyEvery 10 daysWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.6 — better16.4
Further details — not scored
Size40 MB71 MB
Age rating4+4+
DeveloperOleksandr SerhiienkoKAIZER

Bugs and requests

Tabata Timer

Reported bugs

3 issues
  • Workouts not saving properly
  • Sync issues between app and Apple Watch
  • Occasional freezing or restarting of device

Requested features

5 requests
  • Ability to name and save more workouts in free version
  • Option to add exercise images or videos
  • Sync workouts across devices
  • Customizable sounds and alerts
  • Workout history and progress tracking

Kaizer for Coaches

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Tabata Timer

Subscriptions4
  • Premium$1.491 Month
  • Premium$2.993 Months
  • Premium$4.496 Months
Show 1 more
  • Premium$7.491 Year
One-time1
  • Premium$9.99
None

Kaizer for Coaches

No in-app purchases

Questions

Is Tabata Timer free?
Tabata Timer is free to download, with in-app purchases available.
Is Kaizer for Coaches free?
Kaizer for Coaches is free to download, with no in-app purchases.
Do Tabata Timer or Kaizer for Coaches have ads?
Tabata Timer shows ads; Kaizer for Coaches does not.
Which is updated more often, Tabata Timer or Kaizer for Coaches?
Tabata Timer ships an update every 10 days, and Kaizer for Coaches weekly. Most recently, Tabata Timer was updated on October 19, 2026 and Kaizer for Coaches on October 6, 2026.

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