# Hot Spring® Spas vs NextSense

The clearest difference is rating: NextSense at 4.7 against Hot Spring® Spas's 2.9. NextSense also leads on update cadence (every 6 days vs every 3 months) and review sentiment (50% vs 29%). 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.

NextSense holds the better App Store score, 4.7 against 2.9. That said, the two scores are not equally well evidenced: NextSense has 85 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 29% of Hot Spring® Spas's written reviews are positive against 50% of NextSense's.

Hot Spring® Spas ships an update every 3 months, NextSense every 6 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Hot Spring® Spas | NextSense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (10 ratings)](https://appshunter.io/ios/app/hot-spring-spas/id6578461030/reviews) | **[4.7 (85 ratings)](https://appshunter.io/ios/app/nextsense/id6636482744/reviews)** |
| Number of ratings | 10 | **85** |
| Positive reviews | 28.6% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | Free | Free |
| Size | 51 MB | 1.9 GB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Watkins Manufacturing Corporation](https://appshunter.io/developer/662341471) | [Lucid Reality](https://appshunter.io/developer/1417122334) |

## What reviewers say

### Hot Spring® Spas

[App page](https://appshunter.io/ios/app/hot-spring-spas/id6578461030)

This app allows users to remotely control and monitor their hot tub's features, including water chemistry, lighting, temperature, and jet settings. It also provides access to an AI-powered support assistant and energy-saving modes.

**Highlights:** Monitor water chemistry (pH, chlorine, salt), Trigger water care dosing, Adjust lighting, temperature, and jet strength, Activate Clean Cycle or Energy Saving Mode, Manage multiple spa locations, AI-powered support assistant

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

**In-app purchases:** none


### NextSense

[App page](https://appshunter.io/ios/app/nextsense/id6636482744)

This app works with brain-responsive earbuds to enhance sleep quality. It tracks brain activity to personalize audio, offering insights into sleep patterns and a gentle alarm. Integration with Apple Health provides further personalized data.

**Highlights:** Brainwave tracking for sleep depth, Personalized audio for better rest, Detailed sleep reports and trends, Automatic audio pause when asleep, Nap mode with timer and soundscapes, Soothing sound library, Gentle alarm with calming sounds

**In-app purchases:** none


## Frequently asked questions

### Is Hot Spring® Spas free?

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

### Is NextSense free?

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

### Which has better reviews, Hot Spring® Spas or NextSense?

NextSense is rated higher. Hot Spring® Spas averages 2.9 out of 5 from 10 ratings, while NextSense averages 4.7 from 85 ratings.

### Do Hot Spring® Spas or NextSense have ads?

Neither Hot Spring® Spas nor NextSense shows ads.

### Which is updated more often, Hot Spring® Spas or NextSense?

Hot Spring® Spas ships an update every 3 months, and NextSense every 6 days. Most recently, Hot Spring® Spas was updated on October 24, 2026 and NextSense 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.*