Comparison

Flex AI Workout Trainer & Log vs Gymguru

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

Head to head
About

Flex AI Workout Trainer & Log

This app uses AI to provide personalized workout plans and real-time form feedback for weightlifters. It tracks progress, offers adaptive progression, and includes motivational features like leaderboards and streaks. It's designed for all experience levels, from beginners to pros.

Highlights
  • AI personal trainer
  • Real-time form feedback
  • Personalized workout plans
  • Adaptive progression
  • Strength tracking
  • Community leaderboards
  • Apple Watch integration
Features
Read full description

Flex AI is the world’s first true AI personal trainer — built for lifters who want to train smarter, progress faster, and perfect their form. Whether you’re chasing size, strength, or consistency, Flex uses real-time AI to guide every rep, adjust your program, and keep you motivated through challenges, leaderboards, and streaks. - Your AI Coach, Every Rep Personalized workouts built automatically by AI personas that learn your goals, history, and preferences. Real-time form feedback powered by patented computer-vision AI — get instant corrections on squats, bench, deadlift, rows, and more. Adaptive progression and deloading backed by sports-science principles — no spreadsheets, no guesswork. - Train Smarter — See Results AI tracks your strength curve and increases weight when you’re ready. Visual progress graphs show PRs, volume, and recovery trends. Track sets, reps, and tempo with a tap — or automatically with Apple Watch. - Stay Motivated & Connected Join a global community of lifters. Compete on leaderboards, build streaks, and earn badges. Post progress photos, celebrate milestones, and share results. - Accessible to Everyone Free to start with all core features included. Upgrade anytime for advanced AI coaching and premium analytics. Designed for all experience levels — from beginners to pros. - Why Flex AI Real-time AI form feedback (patented) Adaptive, science-based programming Progress tracking & recovery insights Gamified streaks + leaderboards Apple Watch integration Built for hypertrophy & strength goals Start Training Smarter — Today Download Flex AI and experience personal training powered by real AI. Perfect your form. Unlock your best lift. Train smarter — free on iPhone + Apple Watch.

About

Gymguru

This app helps you build and track your workout routines, focusing on logging sets, reps, and weight. It offers features like streak tracking for consistency and a clean interface. Premium unlocks custom plans, AI coaching, and detailed progress stats.

Highlights
  • Workout plan builder
  • Exercise tracking (sets, reps, weight)
  • Streak tracking for consistency
  • Custom workout plans
  • AI Coach for guidance
  • Progress stats and personal records
Features
Read full description

GymGuru builds your workout plan and tracks everything so you can focus on lifting. START FREE Get a full body workout plan and start training immediately: • Full body workouts on your schedule • Exercise tracking with sets, reps, and weight • Streak tracking to keep you consistent • Clean interface that stays out of your way PREMIUM SUBSCRIPTION Unlock the full experience: • Custom workout plans (Push/Pull/Legs, Upper/Lower, Bro Split) • Skip specific muscle groups • Workout history and exercise records • Progress stats and personal records • AI Coach for guidance SUBSCRIPTION OPTIONS • Weekly: $7.99/week • Monthly: $19.99/month • Yearly: $149.99/year (7-day free trial) Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.gymguru.io/privacy

Screenshots

Flex AI Workout Trainer & Log4 screens
Gymguru4 screens

Verdict

The call

The clearest difference is review sentiment: Gymguru at 100% against Flex AI Workout Trainer & Log's 69%. Gymguru also leads on rating (5.0 vs 4.6) and update cadence (every 3 days vs every 9 days). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 3). On price, ads, in-app purchases and monetization model 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. Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $1.99 per month and Gymguru sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Gymguru holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Flex AI Workout Trainer & Log has 2.4K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 69% of Flex AI Workout Trainer & Log's written reviews are positive against 100% of Gymguru's.

UpkeepUpdate frequency

Flex AI Workout Trainer & Log ships an update every 9 days, Gymguru every 3 days. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

Scorecard6 real differences · 4 level
Flex AI Workout Trainer & Log versus Gymguru: the parameters behind the verdict, then further details
ParameterFlex AI Workout Trainer & LogGymguru
PriceFreeFree
Rating4.6 (2.4K ratings)5.0 (3 ratings) — better
Positive reviews69.3% of reviews100.0% of reviews — better
Number of ratings2.4K — better3
Update frequencyEvery 9 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS18.015.1 — better
Further details — not scored
Size574 MB43 MB
Age rating17+17+
DeveloperFlex Artificial Intelligence Inc.Yernar Izbatyrov

Customer experience

Flex AI Workout Trainer & Log

All ratings2,405 ratings
Positive92.0%
Neutral2.6%
Negative5.4%
Written reviews303 reviews
Positive69.3%
Neutral6.6%
Negative24.1%

Gymguru

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Flex AI Workout Trainer & Log

Reported bugs

3 issues
  • App crashes on iOS 16 update
  • Inability to log workouts on previous days
  • Inconsistent syncing between app and Apple Watch

Requested features

4 requests
  • Offline workout mode
  • Ability to save and reuse custom workout plans
  • Muscle group targeting and analytics
  • Social features and community integration

Gymguru

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Flex AI Workout Trainer & Log

Subscriptions6
  • Premium Subscription Monthly$1.991 Month
  • Premium Plus Monthly$2.991 Month
  • Premium Yearly Subscription$9.991 Year
Show 3 more
  • Premium Plus Family Monthly$9.991 Month
  • Premium Plus Yearly7 Days trial$19.991 Year
  • Premium Plus Family Yearly7 Days trial$49.991 Year
One-time2
  • 1 Month Free PremiumFree
  • Lifetime Free PremiumFree
3 purchases

Gymguru

Subscriptions3
  • Weekly Subscription$3.997 Days
  • Monthly Subscription$9.991 Month
  • Yearly Subscription$49.991 Year

Questions

Is Flex AI Workout Trainer & Log free?
Flex AI Workout Trainer & Log is free to download, with in-app purchases available.
Is Gymguru free?
Gymguru is free to download, with in-app purchases available.
Which has better reviews, Flex AI Workout Trainer & Log or Gymguru?
Gymguru is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while Gymguru averages 5.0 from 3 ratings.
Do Flex AI Workout Trainer & Log or Gymguru have ads?
Neither Flex AI Workout Trainer & Log nor Gymguru shows ads.
Which is updated more often, Flex AI Workout Trainer & Log or Gymguru?
Flex AI Workout Trainer & Log ships an update every 9 days, and Gymguru every 3 days. Most recently, Flex AI Workout Trainer & Log was updated on September 23, 2026 and Gymguru on September 9, 2026.

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