# Flex AI Workout Trainer & Log vs SHRED

The clearest difference is in-app purchases: SHRED at none against Flex AI Workout Trainer & Log's 8. SHRED also leads on review sentiment (100% vs 69%) and rating (5.0 vs 4.6). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 6) and update cadence (every 9 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $12.99 per month. SHRED asks for nothing beyond the download.

SHRED 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 6, 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 SHRED's.

Flex AI Workout Trainer & Log ships an update every 9 days, SHRED every 3 weeks. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Flex AI Workout Trainer & Log | SHRED |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/shred-creator-studio/id1514844952/reviews)** |
| Number of ratings | **2.4K** | 6 |
| Positive reviews | 69.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Freemium | **Free** |
| Size | 574 MB | 46 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Flex Artificial Intelligence Inc.](https://appshunter.io/developer/1446354546) | [Shred Labs, LLC](https://appshunter.io/developer/1439828094) |

## 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 (8)**

| 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 |
| 1 Month Free Premium | Free | one-time |
| Lifetime Free Premium | Free | one-time |

**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


### SHRED

[App page](https://appshunter.io/ios/app/shred-creator-studio/id1514844952)

This app empowers fitness instructors to create professional-quality workout videos using just their iPhone. It simplifies the production process with AI tools and automated features, allowing creators to share their classes with a global audience.

**Highlights:** Studio-quality content creation, AI-based tooling, Automated timers and animations, Class customization, No expensive equipment needed, Access to global user base

**Features:** Vision Pro support

**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 SHRED free?

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

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

SHRED is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while SHRED averages 5.0 from 6 ratings.

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

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

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

Flex AI Workout Trainer & Log ships an update every 9 days, and SHRED every 3 weeks. Most recently, Flex AI Workout Trainer & Log was updated on October 17, 2026 and SHRED on October 7, 2026.

---

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