Comparison

Flex AI Workout Trainer & Log vs Maxlyft

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

Maxlyft

This fitness app allows users to log workouts, track personal records, and monitor progress with detailed analytics. It offers customizable routines, exercise tracking, and body measurement logging, all stored securely via iCloud.

Highlights
  • Customizable workout splits
  • Exercise and rep logging
  • Personal record tracking
  • Progress graphs and analytics
  • Body measurement tracking
  • Workout streak tracking
  • Secure iCloud data storage
Read full description

A workout app that is ACTUALLY free. Build your split, log every set, and watch progress compound without the spreadsheet chaos. Maxlyft is a strength training app for lifters who want clear structure and honest numbers. YOUR SPLIT, YOUR WAY Create a rotating or weekly split with named days, rest days, and optional colors. Attach a routine to a training day, or start an empty workout when the plan changes. Your active split keeps today’s training ready to go — open the app and lift. LOG WITHOUT FRICTION Start today’s planned workout, resume mid-session after closing the app, or log freely. Sets are completed as you log them, and your last-session numbers appear as helpful references. A live timer, set count, and volume stay on screen while you train. Log barbell, dumbbell, bodyweight, assisted, duration, and distance work — including per-side weight. PRS THAT ACTUALLY MEAN SOMETHING Maxlyft highlights new records automatically and lets you track custom lifetime marks — best at a chosen weight, rep target, time, or distance. Finished workouts show a crown when you hit a PR. INSIGHTS, NOT NOISE See volume, sets, training time, and muscle-group distribution across 7 days, 30 days, 90 days, 1 year, or all time. Filter by muscle or split day. Open any exercise for lifetime totals, records, and charts tailored to how you track it. BUILT AROUND YOUR LIBRARY No giant canned catalog to fight. Name your own exercises, tag muscles, save routines, and reuse them. Rename a lift and your history stays with it. TRAIN OFFLINE. KEEP YOUR DATA SYNCED. Logging is local-first, so a dead gym signal doesn’t stop the session. Sign in with Apple or Google to sync and restore your data across devices. HOME SCREEN WIDGETS Check today’s session or your last 7 days of volume without opening the app. HOW TO GET STARTED - Choose your units and build your first split — rotating or weekly. - Add the lifts you actually do. - Start today’s workout from Train and log your sets. - Check Insights after a few sessions to see the trend. Privacy Policy: https://www.maxlyft.com/privacy Terms of Use: https://www.maxlyft.com/terms

Screenshots

Flex AI Workout Trainer & Log4 screens
Maxlyft4 screens

Verdict

The call

The clearest difference is ads: Flex AI Workout Trainer & Log at none against Maxlyft's shown. Flex AI Workout Trainer & Log also leads on ratings volume (2.4K vs 16) and iOS requirement (18.0 vs 26.1). Maxlyft's advantage is update cadence (every 2 days vs every 9 days) and review sentiment (88% vs 69%). On price, in-app purchases, monetization model 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. Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $12.99 per month and Maxlyft sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Maxlyft holds the better App Store score, 4.8 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 16, 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 88% of Maxlyft's.

UpkeepUpdate frequency

Flex AI Workout Trainer & Log ships an update every 9 days, Maxlyft every 2 days. The most recent releases landed on September 29, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 4 level
Flex AI Workout Trainer & Log versus Maxlyft: the parameters behind the verdict, then further details
ParameterFlex AI Workout Trainer & LogMaxlyft
PriceFreeFree
Rating4.6 (2.4K ratings)4.8 (16 ratings) — better
Positive reviews69.3% of reviews87.5% of reviews — better
Number of ratings2.4K — better16
Update frequencyEvery 9 daysEvery 2 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS18.0 — better26.1
Further details — not scored
Size574 MB59 MB
Age rating17+12+
DeveloperFlex Artificial Intelligence Inc.Dylan Morgan

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%

Maxlyft

All ratings16 ratings
Positive93.8%
Neutral0.0%
Negative6.3%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

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

Maxlyft

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Flex AI Workout Trainer & Log

Subscriptions6
  • Premium Subscription Monthly$12.991 Month
  • Premium Plus Monthly$29.991 Month
  • Premium Plus Family Monthly$69.991 Month
Show 3 more
  • Premium Yearly Subscription$79.991 Year
  • Premium Plus Yearly7 Days trial$191.991 Year
  • Premium Plus Family Yearly7 Days trial$499.991 Year
One-time2
  • 1 Month Free PremiumFree
  • Lifetime Free PremiumFree
4 purchases

Maxlyft

Subscriptions4
  • Maxlyft Monthly2 Months trial$1.991 Month
  • Maxlyft Pro Monthly$4.991 Month
  • Maxlyft Yearly2 Months trial$17.991 Year
Show 1 more
  • Maxlyft pro Yearly$19.991 Year

Questions

Is Flex AI Workout Trainer & Log free?
Flex AI Workout Trainer & Log is free to download, with in-app purchases available.
Is Maxlyft free?
Maxlyft is free to download, with in-app purchases available.
Which has better reviews, Flex AI Workout Trainer & Log or Maxlyft?
Maxlyft is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while Maxlyft averages 4.8 from 16 ratings.
Do Flex AI Workout Trainer & Log or Maxlyft have ads?
Maxlyft shows ads; Flex AI Workout Trainer & Log does not.
Which is updated more often, Flex AI Workout Trainer & Log or Maxlyft?
Flex AI Workout Trainer & Log ships an update every 9 days, and Maxlyft every 2 days. Most recently, Flex AI Workout Trainer & Log was updated on September 29, 2026 and Maxlyft on September 24, 2026.

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