# Workout Trainer AI vs HIIT | Down Dog

The clearest difference is monetization model: Workout Trainer AI at free with in-app purchases against HIIT | Down Dog's subscription. HIIT | Down Dog's advantage is ads (none vs shown) and update cadence (every 2 weeks vs monthly). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. Workout Trainer AI sells 11 in-app purchases, starting at $6.99 per month and HIIT | Down Dog sells 5 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Workout Trainer AI against 4.9 for HIIT | Down Dog. That said, the two scores are not equally well evidenced: HIIT | Down Dog has 48K ratings behind it against 7.7K, so its average is the more settled of the two. Written reviews are what separate them: 88% of Workout Trainer AI's written reviews are positive against 89% of HIIT | Down Dog's.

Workout Trainer AI ships an update monthly, HIIT | Down Dog every 2 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Workout Trainer AI | HIIT | Down Dog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (7.7K ratings)](https://appshunter.io/ios/app/workout-trainer-ai/id395686735/reviews) | **[4.9 (48K ratings)](https://appshunter.io/ios/app/hiit-down-dog/id1491068090/reviews)** |
| Number of ratings | 7.7K | **48K** |
| Positive reviews | 87.8% of reviews | **89.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 150 MB | 100 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Skimble](https://appshunter.io/developer/345235707) | [Yoga Buddhi Co.](https://appshunter.io/developer/983693693) |

## 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 (11)**

| 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 |
| Fit, Flex & Fierce | $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


### HIIT | Down Dog

[App page](https://appshunter.io/ios/app/hiit-down-dog/id1491068090)

This app offers a dynamic high-intensity interval training (HIIT) experience with over 1000 unique exercises, ensuring you never do the same workout twice. It's beginner-friendly with customizable workout lengths, exercise types, and music to keep you motivated and prevent plateaus.

**Highlights:** Over 1000 unique exercises, Customizable workout length and intervals, Selectable exercise categories (upper body, core, etc.), Preset and custom workout mixes, Dynamic music matching workout intensity, Choice of coach voices, Syncs across devices

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HIIT Subscription | $12.99 | per month |
| All Access Subscription | $12.99 | per month |
| HIIT Subscription | $99.99 | per year |
| All Access Subscription | $99.99 | per year |
| All Access Subscription | $119.99 | per year |

**What reviewers like**

- 🏃🏼‍➡️ Excellent programs
- 👍 Highly customizable workouts
- 🤩 Motivating trainers and music
- 🙌 Affordable and accessible
- 💪 Effective for building strength and fitness

**What reviewers complain about**

- 🐛 App crashes and connection issues
- 🤔 Exercises can be overly complicated for beginners
- 🔇 Music volume issues
- 🤕 Concerns about potential injuries from certain exercises

**Reported bugs**

- App freezing and crashing
- Connectivity problems
- Inconsistent workout experiences

**Requested features**

- Preview of upcoming exercises
- Warm-up and cool-down options
- Ability to exclude certain exercises
- More detailed exercise instructions and form cues
- Offline workout downloads


## Frequently asked questions

### Is Workout Trainer AI free?

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

### Is HIIT | Down Dog free?

HIIT | Down Dog is free to download, with in-app purchases available.

### Which has better reviews, Workout Trainer AI or HIIT | Down Dog?

HIIT | Down Dog is rated higher. Workout Trainer AI averages 4.7 out of 5 from 7.7K ratings, while HIIT | Down Dog averages 4.9 from 48K ratings.

### Do Workout Trainer AI or HIIT | Down Dog have ads?

Workout Trainer AI shows ads; HIIT | Down Dog does not.

### Which is updated more often, Workout Trainer AI or HIIT | Down Dog?

Workout Trainer AI ships an update monthly, and HIIT | Down Dog every 2 weeks. Most recently, Workout Trainer AI was updated on October 27, 2026 and HIIT | Down Dog on October 28, 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.*