# Workout Trainer AI vs KAI Skin

The clearest difference is ads: KAI Skin at none against Workout Trainer AI's shown. Workout Trainer AI's advantage is update cadence (monthly vs every 5 months) and device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Workout Trainer AI sells 10 in-app purchases, starting at $6.99 per month and KAI Skin sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Workout Trainer AI ships an update monthly, KAI Skin every 5 months. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Workout Trainer AI | KAI Skin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7.7K ratings)](https://appshunter.io/ios/app/workout-trainer-ai/id395686735/reviews)** | — |
| Number of ratings | **7.7K** | — |
| Positive reviews | 87.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 150 MB | 16 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Skimble](https://appshunter.io/developer/345235707) | [ALI ATAEI FARD](https://appshunter.io/developer/1858081327) |

## What reviewers say

### Workout Trainer AI

[App page](https://appshunter.io/ios/app/workout-trainer-ai/id395686735)

Achieve your fitness goals with AI-powered personalized coaching. Access multimedia workouts, track various sports, log weightlifting, and connect with a supportive community. Enhance your training with advanced heart rate feedback and performance analysis.

**Highlights:** AI personalized weekly plans, Multimedia workouts for all levels, 70+ sports activities tracking, Weightlifting logging tools, GPS distance tracking, Heart rate feedback & analysis, Community leaderboards

**Features:** macOS Compatibility, Apple Wallet, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO+ Monthly Subscription | $6.99 | per month |
| Monthly PRO+ | $9.99 | per month |
| Annual PRO+ | $59.99 | per year |
| 3 Months PRO Access (60% off!!!) | $9.99 | one-time |
| 6 Pack Toned Abs | $9.99 | one-time |
| Slim & Trim Bootcamp | $9.99 | one-time |
| Lose It. Tone It! | $9.99 | one-time |
| Bikini Beach Babe | $9.99 | one-time |
| 1 Year PRO Access (60% off!!!) | $19.99 | one-time |
| 1 Year Membership of PRO+ | $59.99 | one-time |

**What reviewers like**

- 🚀 Wide range of workouts
- 👍 Variety of exercises
- 👍 Customizable workouts
- 👍 Motivating voice guidance
- 👍 Tracks progress and calories

**What reviewers complain about**

- 🐛 Syncing issues with Apple Watch
- 🐛 Subscription issues and lack of customer support
- 🔒 Privacy concerns with required account creation
- 👎 Overwhelming number of options can be confusing
- 👎 Repetitive and uninspiring voice guidance

**Reported bugs**

- App crashes and freezes
- Workouts not loading or saving properly
- Paid subscription not granting full access

**Requested features**

- Ability to download workouts for offline use
- More advanced workout tracking and analytics
- Integration with other fitness apps and devices
- Customizable voice guidance and music options


### KAI Skin

[App page](https://appshunter.io/ios/app/kai-skin/id6756030739)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $12.99 | per month |
| Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is Workout Trainer AI free?

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

### Is KAI Skin free?

KAI Skin is free to download, with in-app purchases available.

### Do Workout Trainer AI or KAI Skin have ads?

Workout Trainer AI shows ads; KAI Skin does not.

### Which is updated more often, Workout Trainer AI or KAI Skin?

Workout Trainer AI ships an update monthly, and KAI Skin every 5 months. Most recently, Workout Trainer AI was updated on November 5, 2026 and KAI Skin on October 30, 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.*