Comparison

Kairos vs GymGainz

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

Head to head
About

Kairos

Features
Read full description

Kairos is the interval timer that keeps your gym and home workout sessions on track. Plan your workout once, press start, and always know what's next. No guessing, no wasted time. Just start and train. BUILD • Custom work, rest, warm-up and cool-down intervals • Rounds and exercises with weights, reps and notes • Save workouts, give each one a colour, and reuse them anytime TRAIN • Full-screen timer with countdown sounds and vibration • Stays on time with your phone locked or the app in the background • Follow your workout from the Lock Screen and Dynamic Island TRACK • Weekly and monthly stats, with a calendar of every session • Finished workouts saved to Apple Health, if you allow it • No account needed to get started Got an idea or found a bug? Chat with us straight from the app. We read every message. Kairos is free to use. Kairos Premium unlocks unlimited custom workout sessions. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://theworkouttimer.app/privacy-policy

About

GymGainz

Log workouts, monitor progress, and stay motivated with a simple, powerful tool. Designed for lifters of all levels, it helps you track sets, reps, weights, and visualize your gains over time. Focus on your training with a clean, efficient interface.

Highlights
  • Workout logging
  • Progress monitoring
  • Routine creation
  • Personal record tracking
  • Performance visualization
  • Flexible logging options
Features
Read full description

MISSION Our mission is to help people build strength, stay consistent, and track real progress through a simple, powerful workout logging experience. ABOUT THIS PROJECT GymGainz is a workout tracker designed for lifters who want a clean, efficient way to log workouts, monitor progress, and stay motivated in the gym. Built for both beginners and experienced athletes, the app focuses on what matters most: your lifts, your routines, and your gains. GymGainz makes it easy to create and follow workout routines, track sets, reps, and weights, and visualize progress over time. Whether you’re training for strength, hypertrophy, or general fitness, the app provides the tools you need to stay organized and push forward with confidence. With GymGainz, you can log workouts quickly without distractions. The streamlined interface allows you to focus on training, not tapping through cluttered menus. Track personal records, review past workouts, and see how your performance evolves week after week. GymGainz stands out from traditional fitness apps by prioritizing simplicity, speed, and clarity. Instead of overwhelming users with unnecessary features, the app delivers a focused workout tracking experience that adapts to your training style. From structured routines to flexible free logging, GymGainz supports the way you train. Some content and features may require an in-app purchase or subscription. These include advanced workout analytics, extended exercise libraries, and enhanced progress tracking tools. From casual gym-goers looking to stay consistent to dedicated lifters chasing new personal bests, GymGainz offers a reliable and effective way to track workouts and maximize results. Terms of Use – https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Kairos4 screens
GymGainz4 screens

Verdict

The call

The clearest difference is ads: Kairos at none against GymGainz's shown. Kairos also leads on update cadence (every 6 days vs every 2 weeks). GymGainz's advantage is iOS requirement (13.0 vs 16.4). On price, 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. Kairos sells 3 in-app purchases, starting at $4.99 per month and GymGainz sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Kairos ships an update every 6 days, GymGainz every 2 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Kairos versus GymGainz: the parameters behind the verdict, then further details
ParameterKairosGymGainz
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 6 days — betterEvery 2 weeks
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free
DevicesiPhoneiPhone, iPod — better
Requires iOS16.413.0 — better
Further details — not scored
Size105 MB373 MB
Age rating4+4+
DeveloperHonestyVisionOtonye Bestman

In-app purchases

3 purchases

Kairos

Subscriptions2
  • Pro subscription monthly1 Month trial$4.991 Month
  • Pro subscription annually1 Month trial$24.991 Year
One-time1
  • Lifetime Pro subscription$19.99
3 purchases

GymGainz

Subscriptions2
  • Access premium - Monthly$3.991 Month
  • Access premium - Yearly$24.991 Year
One-time1
  • Lifetime$69.99

Questions

Is Kairos free?
Kairos is free to download, with in-app purchases available.
Is GymGainz free?
GymGainz is free to download, with in-app purchases available.
Do Kairos or GymGainz have ads?
GymGainz shows ads; Kairos does not.
Which is updated more often, Kairos or GymGainz?
Kairos ships an update every 6 days, and GymGainz every 2 weeks. Most recently, Kairos was updated on October 30, 2026 and GymGainz on November 5, 2026.

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