# Flex AI Workout Trainer & Log vs Train With Soph

The clearest difference is update cadence: Flex AI Workout Trainer & Log at every 9 days against Train With Soph's every 4 months. Flex AI Workout Trainer & Log also leads on ratings volume (2.4K vs 6). Train With Soph's advantage is iOS requirement (15.1 vs 18.0). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $1.99 per month and Train With Soph sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Flex AI Workout Trainer & Log against 4.5 for Train With Soph. 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 are what separate them: 69% of Flex AI Workout Trainer & Log's written reviews are positive against 63% of Train With Soph's.

Flex AI Workout Trainer & Log ships an update every 9 days, Train With Soph every 4 months. The most recent releases landed on September 26, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Flex AI Workout Trainer & Log | Train With Soph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (2.4K ratings)](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews)** | [4.5 (6 ratings)](https://appshunter.io/ios/app/train-with-soph/id1479354950/reviews) |
| Number of ratings | **2.4K** | 6 |
| Positive reviews | **69.3% of reviews** | 62.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 4 months |
| Monetization | Freemium | Free with in-app purchases |
| Size | 574 MB | 20 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Flex Artificial Intelligence Inc.](https://appshunter.io/developer/1446354546) | [Sophie Allen Empire Pty Ltd](https://appshunter.io/developer/1479354949) |

## 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 | $1.99 | per month |
| Premium Plus Monthly | $2.99 | per month |
| Premium Yearly Subscription | $9.99 | per year |
| Premium Plus Family Monthly | $9.99 | per month |
| Premium Plus Yearly | $19.99 | per year |
| Premium Plus Family Yearly | $49.99 | 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


### Train With Soph

[App page](https://appshunter.io/ios/app/train-with-soph/id1479354950)

Access personalized, evidence-based training and nutrition programs designed by experts to help you build muscle, get stronger, and healthier. Programs update regularly based on your progress and goals, with options for home or gym workouts. Includes educational content and community support.

**Highlights:** Personalized training programs, Custom nutrition plans, Home and gym workout options, Progress tracking, Educational content, Female community support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Become a TWS member today | $54.99 | one-time |


## 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 Train With Soph free?

Train With Soph is free to download, with in-app purchases available.

### Which has better reviews, Flex AI Workout Trainer & Log or Train With Soph?

Flex AI Workout Trainer & Log is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while Train With Soph averages 4.5 from 6 ratings.

### Do Flex AI Workout Trainer & Log or Train With Soph have ads?

Neither Flex AI Workout Trainer & Log nor Train With Soph shows ads.

### Which is updated more often, Flex AI Workout Trainer & Log or Train With Soph?

Flex AI Workout Trainer & Log ships an update every 9 days, and Train With Soph every 4 months. Most recently, Flex AI Workout Trainer & Log was updated on September 26, 2026 and Train With Soph on September 8, 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.*