Comparison

Vory One Timer vs Kaizer for Coaches

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

Head to head
About

Vory One Timer

Features
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A simple, premium-feeling sports timer for athletes who time their work. Vory One Timer gives you the timer modes you actually use during training, on a clean dark display with seven-segment LED digits visible from across the gym. No accounts. No subscriptions. No ads. No tracking. FREE MODES โ€ข Clock โ€” current time of day โ€ข Chronometer โ€” start, stop, summary โ€ข Count Up โ€” open-ended timing to a cap โ€ข Count Down โ€” set a target and watch it tick to zero โ€ข Interval โ€” work / rest, up to 4 rounds โ€ข EMOM โ€” every minute on the minute, up to 20 rounds โ€ข Tabata โ€” 20s work / 10s rest ร— 8 PREMIUM (one-time โ‚ฌ2.99 unlock, no subscription) โ€ข EMOM Pro โ€” any interval, any rounds, with saved presets โ€ข My Presets โ€” save and recall your favorite setups โ€ข Custom โ€” chain any sequence of work and rest blocks AUDIO CUES THAT KEEP WORKING Three short beeps in the last 3 seconds of every interval, followed by a long beep at every milestone. Cues keep playing when your phone is locked, when you switch apps, even when a call comes in โ€” the timer doesn't stop because you stopped looking at it. DESIGNED FOR THE GYM โ€ข Big LED-style digits, readable across the box โ€ข Landscape-only, dark theme, no glare โ€ข Screen stays awake during a workout โ€ข Local notification if you background the app while a timer is still running โ€ข Mute toggle for shared spaces OPTIONAL SIGN IN Sign in with Apple is optional โ€” used only to display your name on the Profile screen. Everything you do in the app stays on your device. NO TRACKING. NO SERVERS. We don't collect a single byte. No analytics, no ads, no third-party SDKs. Read our Privacy Policy at voryone.io/timer/privacy.

About

Kaizer for Coaches

Features
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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

Vory One Timer4 screens
Kaizer for Coaches4 screens

Verdict

The call

The clearest difference is in-app purchases: Kaizer for Coaches at none against Vory One Timer's 1. Vory One Timer's advantage is update cadence (every 4 days vs every 8 days). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Vory One Timer sells 1 one-off in-app purchase. Kaizer for Coaches asks for nothing beyond the download.

UpkeepUpdate frequency

Vory One Timer ships an update every 4 days, Kaizer for Coaches every 8 days. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

Scorecard2 real differences ยท 4 level
Vory One Timer versus Kaizer for Coaches: the parameters behind the verdict, then further details
ParameterVory One TimerKaizer for Coaches
PriceFreeFree
Update frequencyEvery 4 days โ€” betterEvery 8 days
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 โ€” better
Further details โ€” not scored
Size2 MB67 MB
Age rating4+4+
DeveloperVory One LLCKAIZER

In-app purchases

1 purchases

Vory One Timer

One-time1
  • Premium$2.99
None

Kaizer for Coaches

No in-app purchases

Questions

Is Vory One Timer free?
Vory One 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 Vory One Timer or Kaizer for Coaches have ads?
Neither Vory One Timer nor Kaizer for Coaches shows ads.
Which is updated more often, Vory One Timer or Kaizer for Coaches?
Vory One Timer ships an update every 4 days, and Kaizer for Coaches every 8 days. Most recently, Vory One Timer was updated on September 9, 2026 and Kaizer for Coaches on September 18, 2026.

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