# Flex AI Workout Trainer & Log vs LVLUPBODY

The clearest difference is in-app purchases: LVLUPBODY at none against Flex AI Workout Trainer & Log's 6. LVLUPBODY also leads on rating (4.9 vs 4.6) and device support (4 vs 2). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 16) and update cadence (every 9 days vs every 6 weeks). On price and ads there is nothing between them.

Both are free to download. Flex AI Workout Trainer & Log sells 6 in-app purchases, starting at $12.99 per month. LVLUPBODY asks for nothing beyond the download.

LVLUPBODY holds the better App Store score, 4.9 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.

Flex AI Workout Trainer & Log ships an update every 9 days, LVLUPBODY every 6 weeks. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Flex AI Workout Trainer & Log | LVLUPBODY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews) | **[4.9 (16 ratings)](https://appshunter.io/ios/app/lvlupbody/id6469731782/reviews)** |
| Number of ratings | **2.4K** | 16 |
| Positive reviews | 69.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 6 weeks |
| Monetization | Freemium | **Free** |
| Size | 574 MB | 176 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Flex Artificial Intelligence Inc.](https://appshunter.io/developer/1446354546) | [LVLUPBODY Fitness Inc.](https://appshunter.io/developer/1712556053) |

## What reviewers say

### Flex AI Workout Trainer & Log

[App page](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547)

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:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription Monthly | $12.99 | per month |
| Premium Plus Monthly | $29.99 | per month |
| Premium Plus Family Monthly | $69.99 | per month |
| Premium Yearly Subscription | $79.99 | per year |
| Premium Plus Yearly | $191.99 | per year |
| Premium Plus Family Yearly | $499.99 | per year |

**What reviewers like**

- 🚀 Detailed workout tracking
- 👍 Customizable workouts
- 🔒 Comprehensive exercise library
- 💡 Helpful progress tracking
- 👍 Clean and intuitive interface

**What reviewers complain about**

- 🐛 Glitches and bugs
- 💰 Expensive premium subscription
- 🔒 Limited functionality without premium
- 🐛 Inconsistent rest timer
- 🐛 Workout data loss

**Reported bugs**

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

**Requested features**

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


### LVLUPBODY

[App page](https://appshunter.io/ios/app/lvlupbody/id6469731782)

This app provides personalized workout and nutrition programs to help you achieve your health and fitness goals. Track your progress, meals, habits, and measurements with guidance from your coach and connect with supportive communities.

**Highlights:** Personalized workout programs, Track workouts and nutrition, Monitor lifestyle habits and measurements, Real-time coach messaging, Digital community support, Milestone badges and progress tracking, Wearable device integration

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Flex AI Workout Trainer & Log free?

Flex AI Workout Trainer & Log is free to download, with in-app purchases available.

### Is LVLUPBODY free?

LVLUPBODY is free to download, with no in-app purchases.

### Which has better reviews, Flex AI Workout Trainer & Log or LVLUPBODY?

LVLUPBODY is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while LVLUPBODY averages 4.9 from 16 ratings.

### Do Flex AI Workout Trainer & Log or LVLUPBODY have ads?

Neither Flex AI Workout Trainer & Log nor LVLUPBODY shows ads.

### Which is updated more often, Flex AI Workout Trainer & Log or LVLUPBODY?

Flex AI Workout Trainer & Log ships an update every 9 days, and LVLUPBODY every 6 weeks. Most recently, Flex AI Workout Trainer & Log was updated on November 11, 2026 and LVLUPBODY on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*