Comparison

Flex AI Workout Trainer & Log vs Strongman Online Method

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

Strongman Online Method

This app provides a personalized fitness and nutrition plan tailored to your goals and current abilities. Train at home or in the gym with video guidance, track your progress, and receive ongoing support through in-app chat. Achieve visible results in as little as 4 weeks.

Highlights
  • Personalized training and nutrition plans
  • In-app chat for mentorship and support
  • Video-guided exercises
  • Healthy recipe suggestions
  • Macronutrient calculator
  • Diet and workout logging
  • Progress tracking with visual reports
Features
Read full description

Strongman Online Method - lični trener u tvom telefonu. Potpuno personalizovan pristup. Program pravim u komunikaciji sa tobom, u odnosu na tvoje trenutne sposobnostima i ciljeve. Teretana ti nije neophodna, možeš trenirati sa mnom i kod kuće. Vreme treninga određuješ ti. Trenira se 3 puta nedeljno po pola sata do sat vremena. Dakle, potrebno je odvojiti samo 90 minuta nedeljno za treninge. Preko 5000 zadovoljnih klijenata širom sveta. Pridruži se! Kako krećemo? Korak 1 - Instaliraš aplikaciju Korak 2 - Uneseš svoj mejl i lozinku ukoliko već imaš nalog ili klikneš "Nemaš nalog?" i uneseš svoje podatke da kreiraš nalog. Korak 3 - Pošalješ poruku u aplikaciji Korak 4 - Kroz komunikaciju dobijam uvid o ciljevima i trenutnom stanju Korak 5 - Sastavim ti i postavim plan ishrane i treninga Korak 6 - Pratim tvoj napredak i usklađujem program Šta dobijaš? * Mentorstvo i podršku kroz komunikaciju - imamo chat u aplikaciji. Možemo da razmejnujemo fotografije progresa i snimke kako izvodiš vežbu. * Plan ishrane sa zdravim receptima sastavljenim od namirnica koje i inače koristite. Osećaj sitosti je deo programa. * Kalkulator makronutrijenata - tačno računanje koliko je ugljenih hidrata, proteina i masti uneto po obroku i danima uz grafički prikaz. Ne moraš meriti hranu u grame, uz ovaj kalkulator vrlo brzo učiš da odokativno izmeriš koliko je čega potrebno. Klijentima se ovo posebno dopada. * Dnevnik ishrane, dnevnik treninga i praćenje navika. * Plan treninga u video formatu sa opisom izvođenja svake vežbe. Krećemo lagano, kako napreduješ treninzi postaju jači. * Grafički prikaz tvog napretka - na početku saradnje upisuješ svoje mere i pratiš kako se menjaju tokom vremena. Možeš ubaciti i upoređivati svoje PRE i POSLE slike. Potrebno je samo: - 4 nedelje da vidiš prve rezultate - 8 nedelja da primete tvoji prijatelji - 12 nedelja da svi primete Hajde da krenemo! Čekam tvoju poruku u aplikaciji.

Screenshots

Flex AI Workout Trainer & Log4 screens
Strongman Online Method4 screens

Verdict

The call

The clearest difference is in-app purchases: Strongman Online Method at none against Flex AI Workout Trainer & Log's 8. Strongman Online Method also leads on review sentiment (100% vs 69%). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 13) and rating (4.6 vs 4.4). On price, ads 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. Strongman Online Method asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Flex AI Workout Trainer & Log holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Flex AI Workout Trainer & Log has 2.4K ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 69% of Flex AI Workout Trainer & Log's written reviews are positive against 100% of Strongman Online Method's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Flex AI Workout Trainer & Log ships an update every 9 days, Strongman Online Method every 3 weeks. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

Scorecard7 real differences · 3 level
Flex AI Workout Trainer & Log versus Strongman Online Method: the parameters behind the verdict, then further details
ParameterFlex AI Workout Trainer & LogStrongman Online Method
PriceFreeFree
Rating4.6 (2.4K ratings) — better4.4 (13 ratings)
Positive reviews69.0% of reviews100.0% of reviews — better
Number of ratings2.4K — better13
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS18.0 — better26.2
Further details — not scored
Size574 MB10 MB
Age rating17+4+
DeveloperFlex Artificial Intelligence Inc.SELECTED GREEN LIMITED

Customer experience

Flex AI Workout Trainer & Log

All ratings2,409 ratings
Positive91.9%
Neutral2.6%
Negative5.4%
Written reviews310 reviews
Positive69.0%
Neutral6.5%
Negative24.5%

Strongman Online Method

All ratings12 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 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

Strongman Online Method

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
None

Strongman Online Method

No in-app purchases

Questions

Is Flex AI Workout Trainer & Log free?
Flex AI Workout Trainer & Log is free to download, with in-app purchases available.
Is Strongman Online Method free?
Strongman Online Method is free to download, with no in-app purchases.
Which has better reviews, Flex AI Workout Trainer & Log or Strongman Online Method?
Flex AI Workout Trainer & Log is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while Strongman Online Method averages 4.4 from 13 ratings.
Do Flex AI Workout Trainer & Log or Strongman Online Method have ads?
Neither Flex AI Workout Trainer & Log nor Strongman Online Method shows ads.
Which is updated more often, Flex AI Workout Trainer & Log or Strongman Online Method?
Flex AI Workout Trainer & Log ships an update every 9 days, and Strongman Online Method every 3 weeks. Most recently, Flex AI Workout Trainer & Log was updated on October 17, 2026 and Strongman Online Method on October 3, 2026.

Other comparisons