# SmartTub® vs CalSpas

The clearest difference is rating: CalSpas at 4.3 against SmartTub®'s 3.6. CalSpas also leads on monetization model (free vs free with in-app purchases) and iOS requirement (8.0 vs 15.1). SmartTub®'s advantage is ratings volume (320 vs 3). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CalSpas holds the better App Store score, 4.3 against 3.6. That said, the two scores are not equally well evidenced: SmartTub® has 320 ratings behind it against 3, so its average is the more settled of the two.

SmartTub® ships an update fortnightly, CalSpas weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | SmartTub® | CalSpas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (320 ratings)](https://appshunter.io/ios/app/smarttub/id1318260634/reviews) | **[4.3 (3 ratings)](https://appshunter.io/ios/app/calspas/id1333315488/reviews)** |
| Number of ratings | **320** | 3 |
| Positive reviews | 23.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 97 MB | 66 MB |
| Requires iOS | 15.1 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Jacuzzi Brands Corp.](https://appshunter.io/developer/967204652) | [Erick Canonizado](https://appshunter.io/developer/975448513) |

## What reviewers say

### SmartTub®

[App page](https://appshunter.io/ios/app/smarttub/id1318260634)

This app acts as a personal hot tub assistant, providing tailored tips, how-to videos, and information based on your usage. It allows remote control of settings, energy usage estimates, and notifications for maintenance or power outages, ensuring you're always informed about your hot tub's status.

**Highlights:** Personalized hot tub tips and how-to videos, Remote adjustment of temperature and energy efficiency, Energy usage estimates, Power outage notifications, Dealer alerts for maintenance, Remote connection to dealer service

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Convenient remote control
- 🔒 Alerts for power outages
- 👍 Easy to use
- 👍 Useful monitoring features

**What reviewers complain about**

- 🐛 Frequent connectivity issues
- 🐛 Temperature settings not reliable
- 🐛 Buggy and unstable
- 💰 Expensive annual subscription
- 🤔 Lack of WiFi option

**Reported bugs**

- App frequently logs out users
- Inability to register warranty
- Inconsistent temperature readings
- Unreliable connection to spa

**Requested features**

- Ability to remotely turn off spa
- Customizable heating and filtering schedules
- Chemical tracking and maintenance reminders
- Improved Apple Watch integration
- Better temperature and setting controls


### CalSpas

[App page](https://appshunter.io/ios/app/calspas/id1333315488)

This app helps Cal Spas dealers showcase their products with updated listings, manuals, and marketing materials. Casual users can explore and find the perfect spa for their home.

**Highlights:** Updated product listings, Manuals and troubleshooting guide, Marketing materials access, Spa finder for home users, Dealer-specific tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmartTub® free?

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

### Is CalSpas free?

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

### Which has better reviews, SmartTub® or CalSpas?

CalSpas is rated higher. SmartTub® averages 3.6 out of 5 from 320 ratings, while CalSpas averages 4.3 from 3 ratings.

### Do SmartTub® or CalSpas have ads?

Neither SmartTub® nor CalSpas shows ads.

### Which is updated more often, SmartTub® or CalSpas?

SmartTub® ships an update fortnightly, and CalSpas weekly. Most recently, SmartTub® was updated on October 24, 2026 and CalSpas on October 24, 2026.

---

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