# Hydrow vs Vision AR by Caldera® Spas

The clearest difference is rating: Hydrow at 4.8 against Vision AR by Caldera® Spas's 3.9. Hydrow also leads on update cadence (every 3 weeks vs every 4 months) and ratings volume (3.6K vs 8). Vision AR by Caldera® Spas's advantage is in-app purchases (none vs 1) and iOS requirement (15.0 vs 18.6). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Hydrow sells 1 in-app purchase, starting at $29.99 per month. Vision AR by Caldera® Spas asks for nothing beyond the download.

Hydrow holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Hydrow has 3.6K ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 59% of Hydrow's written reviews are positive against 67% of Vision AR by Caldera® Spas's, so the app with the better star average is not the one people write more warmly about.

Hydrow ships an update every 3 weeks, Vision AR by Caldera® Spas every 4 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Hydrow | Vision AR by Caldera® Spas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.6K ratings)](https://appshunter.io/ios/app/hydrow/id1458653991/reviews)** | [3.9 (8 ratings)](https://appshunter.io/ios/app/vision-ar-by-caldera-spas/id1586032977/reviews) |
| Number of ratings | **3.6K** | 8 |
| Positive reviews | 59.2% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 187 MB | 143 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hydrow, Inc.](https://appshunter.io/developer/1371506837) | [Watkins Manufacturing Corporation](https://appshunter.io/developer/662341471) |

## What reviewers say

### Hydrow

[App page](https://appshunter.io/ios/app/hydrow/id1458653991)

Access over 5,000 on-and-off rower workouts led by elite athletes filmed in beautiful locations. Track performance, connect with a community, and share achievements. Compatible with Concept2 PM5 rowers for integrated metrics and leaderboards.

**Highlights:** 5,000+ on-and-off rower workouts, Elite athlete instructors, Global scenic filming locations, Performance tracking, Rowing community features, Strava and Apple Health integration, Concept2 PM5 rower compatibility

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Digital Basic | $29.99 | per month |

**What reviewers like**

- 🚀 Smooth motion
- 🚀 Engaging video coaching
- 👍 Variety of workouts
- 👍 Motivating instructors
- 👍 Convenient for travel

**What reviewers complain about**

- 🐛 App issues (no iPad support, audio sync, etc.)
- 🔒 Lack of account management features
- 💰 Expensive subscription cost
- 💰 Requires expensive rower hardware

**Reported bugs**

- App crashes during workouts
- Difficulty logging in or syncing account
- Inconsistent video/audio quality

**Requested features**

- Ability to search/filter workouts
- More data analytics and tracking
- Integration with other fitness devices/apps
- Ability to manage account on app/website


### Vision AR by Caldera® Spas

[App page](https://appshunter.io/ios/app/vision-ar-by-caldera-spas/id1586032977)

Visualize hot tubs in your own space using augmented reality. Explore different models, color combinations, and see how they fit before you buy. Share your selections with dealers to find your perfect spa.

**Highlights:** View spa models in 3D, Visualize in your space, Try different color combinations, Take and share pictures, Browse and compare models, Send favorites to dealer

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hydrow free?

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

### Is Vision AR by Caldera® Spas free?

Vision AR by Caldera® Spas is free to download, with no in-app purchases.

### Which has better reviews, Hydrow or Vision AR by Caldera® Spas?

Hydrow is rated higher. Hydrow averages 4.8 out of 5 from 3.6K ratings, while Vision AR by Caldera® Spas averages 3.9 from 8 ratings.

### Do Hydrow or Vision AR by Caldera® Spas have ads?

Neither Hydrow nor Vision AR by Caldera® Spas shows ads.

### Which is updated more often, Hydrow or Vision AR by Caldera® Spas?

Hydrow ships an update every 3 weeks, and Vision AR by Caldera® Spas every 4 months. Most recently, Hydrow was updated on November 6, 2026 and Vision AR by Caldera® Spas on November 7, 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.*