Comparison

Flex AI Workout Trainer & Log vs SkinRoutine

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

SkinRoutine

Read full description

I once spent $300 on skincare products I was sure would change my skin. Three months later, the bottles were still half full. I knew exactly what to do — I just couldn't stick to it. So I built SkinRoutine. SkinRoutine is a simple skincare tracker for people who buy great products but forget to use them. Create your morning, evening, or weekly routines, check in with one tap, and build habits that actually last. What you can do: - Build custom routines for the products you use most - Log your skincare with one tap - Set gentle reminders so you never forget - Track how long you've used each product - Mark empty bottles and watch your garden turn golden - See your streaks, stats, and progress over time - Keep everything on your iPhone — no account, no cloud, no tracking Start with one routine. Finish one bottle. Your skin will thank you.

Screenshots

Flex AI Workout Trainer & Log4 screens
SkinRoutine4 screens

Verdict

The call

The clearest difference is in-app purchases: SkinRoutine at none against Flex AI Workout Trainer & Log's 8. On price, ads, device support and iOS requirement 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. SkinRoutine asks for nothing beyond the download.

Scorecard1 real difference · 9 level
Flex AI Workout Trainer & Log versus SkinRoutine: the parameters behind the verdict, then further details
ParameterFlex AI Workout Trainer & LogSkinRoutine
PriceFreeFree
Rating4.6 (2.4K ratings) — better—
Positive reviews69.0% of reviews—
Number of ratings2.4K — better—
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size574 MB1 MB
Age rating17+4+
DeveloperFlex Artificial Intelligence Inc.icreativeart Co., Ltd.

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

SkinRoutine

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

SkinRoutine

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 SkinRoutine free?
SkinRoutine is free to download, with no in-app purchases.
Do Flex AI Workout Trainer & Log or SkinRoutine have ads?
Neither Flex AI Workout Trainer & Log nor SkinRoutine shows ads.

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