Comparison

Flex AI Workout Trainer & Log vs XP Athletics

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

XP Athletics

Access structured workout programs and exclusive challenges designed for muscle growth and strength. Features include exercise demonstrations, progress tracking, and a built-in rest timer. An optional add-on provides core-focused exercises.

Highlights
  • Structured workout programs
  • Exercise video demonstrations
  • Progress tracking tools
  • Built-in rest timer
  • Exclusive 90-day fitness challenge
  • Optional Core Exercises add-on
Read full description

Level up your lifts with XP! Whether you’re an experienced athlete or eager to get started, XP Athletics provides structured workout programs, powerful tracking tools, and exclusive in-app challenges to keep you motivated every step of the way. Current Features: • A 5-day split designed for balanced, aesthetics-driven muscle growth, featuring primarily isolation exercises combined with overall strength training. • Looping video demonstrations for each exercise to ensure proper form and technique. • Progress tracking tools for logging weights and reps. • A built in rest timer to optimize recovery and maintain consistency. • An optional Core Exercises add-on featuring 11 dynamic movements to help strengthen and define your core. • A 90 day fitness challenge exclusive to XP athletes only!

Screenshots

Flex AI Workout Trainer & Log4 screens
XP Athletics4 screens

Verdict

The call

The clearest difference is review sentiment: XP Athletics at 100% against Flex AI Workout Trainer & Log's 69%. XP Athletics also leads on rating (5.0 vs 4.6) and iOS requirement (15.1 vs 18.0). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 2). On price, update cadence, ads and in-app purchases 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 XP Athletics sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

XP Athletics 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 2, 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 XP Athletics's.

UpkeepUpdate frequency

Flex AI Workout Trainer & Log ships an update every 9 days, XP Athletics weekly. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard4 real differences · 6 level
Flex AI Workout Trainer & Log versus XP Athletics: the parameters behind the verdict, then further details
ParameterFlex AI Workout Trainer & LogXP Athletics
PriceFreeFree
Rating4.6 (2.4K ratings)5.0 (2 ratings) — better
Positive reviews69.0% of reviews100.0% of reviews — better
Number of ratings2.4K — better2
Update frequencyEvery 9 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size574 MB40 MB
Age rating17+4+
DeveloperFlex Artificial Intelligence Inc.XINIA

Customer experience

Flex AI Workout Trainer & Log

All ratings2,412 ratings
Positive92.0%
Neutral2.6%
Negative5.4%
Written reviews310 reviews
Positive69.0%
Neutral6.5%
Negative24.5%

XP Athletics

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

XP Athletics

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
2 purchases

XP Athletics

One-time2
  • CORE EXERCISES$3.99
  • XINIA'S SPLIT$19.99

Questions

Is Flex AI Workout Trainer & Log free?
Flex AI Workout Trainer & Log is free to download, with in-app purchases available.
Is XP Athletics free?
XP Athletics is free to download, with in-app purchases available.
Which has better reviews, Flex AI Workout Trainer & Log or XP Athletics?
XP Athletics is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while XP Athletics averages 5.0 from 2 ratings.
Do Flex AI Workout Trainer & Log or XP Athletics have ads?
Neither Flex AI Workout Trainer & Log nor XP Athletics shows ads.
Which is updated more often, Flex AI Workout Trainer & Log or XP Athletics?
Flex AI Workout Trainer & Log ships an update every 9 days, and XP Athletics weekly. Most recently, Flex AI Workout Trainer & Log was updated on October 24, 2026 and XP Athletics on October 19, 2026.

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