# Hot Spring® Spas Legacy vs Serenity Engine

The clearest difference is rating: Serenity Engine at 5.0 against Hot Spring® Spas Legacy's 1.4. Hot Spring® Spas Legacy's advantage is ratings volume (59 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Serenity Engine holds the better App Store score, 5.0 against 1.4. That said, the two scores are not equally well evidenced: Hot Spring® Spas Legacy has 59 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Hot Spring® Spas Legacy | Serenity Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.4 (59 ratings)](https://appshunter.io/ios/app/hot-spring-spas-legacy/id1527213460/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/serenity-engine/id6758733840/reviews)** |
| Number of ratings | **59** | 1 |
| Positive reviews | 10.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | Free |
| Size | 24 MB | 120 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Watkins Manufacturing Corporation](https://appshunter.io/developer/662341471) | [ANDREW BRODIE LANDRY](https://appshunter.io/developer/1874662777) |

## What reviewers say

### Hot Spring® Spas Legacy

[App page](https://appshunter.io/ios/app/hot-spring-spas-legacy/id1527213460)

Remotely control and monitor your spa's temperature, jets, and lighting. Manage your spa from any location, even at a second home or rental property. Grant access to service professionals and receive alerts for prompt attention.

**Highlights:** Set water temperature remotely, Control jets and lighting from anywhere, Monitor FreshWater® Salt System, Manage spas at multiple locations, Grant access to service professionals, Receive attention alerts

**In-app purchases:** none

**What reviewers like**

- 👍 Basic functions work (when connected)
- 👍 Good when it works

**What reviewers complain about**

- 🐛 Constantly disconnects
- 🐛 Extremely buggy
- 🐛 Does not show proper information
- 🐛 Data does not match panel display
- 🐛 Unreliable connection

**Reported bugs**

- Constantly needs resetting
- May not always work after resetting
- App doesn't show proper information
- Salt output doesn't match panel display
- Doesn't have confidence it reads temp right

**Requested features**

- 💡 Choose light colors
- 💡 Control light colors
- 💡 Scheduling for water heat up
- 💡 HomeKit compatibility
- 💡 Smart home system connectivity


### Serenity Engine

[App page](https://appshunter.io/ios/app/serenity-engine/id6758733840)

Create immersive ambient soundscapes for focus, relaxation, and sleep. Features curated sound presets, binaural beats for brainwave tuning, and a gentle sleep timer. Enjoy a beautiful visualizer and a distraction-free, ad-free interface.

**Highlights:** Curated ambient soundscapes, Binaural beats for brainwave tuning, Focus, Relax, and Sleep modes, Customizable sleep timer, Real-time audio visualizer, Minimalist, ad-free interface

**In-app purchases:** none


## Frequently asked questions

### Is Hot Spring® Spas Legacy free?

Hot Spring® Spas Legacy is free to download, with no in-app purchases.

### Is Serenity Engine free?

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

### Which has better reviews, Hot Spring® Spas Legacy or Serenity Engine?

Serenity Engine is rated higher. Hot Spring® Spas Legacy averages 1.4 out of 5 from 59 ratings, while Serenity Engine averages 5.0 from 1 ratings.

### Do Hot Spring® Spas Legacy or Serenity Engine have ads?

Neither Hot Spring® Spas Legacy nor Serenity Engine shows ads.

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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.*