# SmartTub® vs TRKR.

The clearest difference is in-app purchases: SmartTub® at none against TRKR.'s 2. SmartTub® also leads on iOS requirement (15.1 vs 26.0). TRKR.'s advantage is update cadence (every 4 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. TRKR. sells 2 in-app purchases, starting at $3.99 per month. SmartTub® asks for nothing beyond the download.

SmartTub® ships an update fortnightly, TRKR. every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SmartTub® | TRKR. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (320 ratings)](https://appshunter.io/ios/app/smarttub/id1318260634/reviews)** | — |
| Number of ratings | **320** | — |
| Positive reviews | 23.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 97 MB | 5 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jacuzzi Brands Corp.](https://appshunter.io/developer/967204652) | [Eduardo Massud](https://appshunter.io/developer/1579118411) |

## 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


### TRKR.

[App page](https://appshunter.io/ios/app/trkr/id6777814754)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TRKR Premium | $3.99 | per month |
| TRKR Premium | $24.99 | per year |


## Frequently asked questions

### Is SmartTub® free?

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

### Is TRKR. free?

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

### Do SmartTub® or TRKR. have ads?

Neither SmartTub® nor TRKR. shows ads.

### Which is updated more often, SmartTub® or TRKR.?

SmartTub® ships an update fortnightly, and TRKR. every 4 days. Most recently, SmartTub® was updated on October 24, 2026 and TRKR. on October 25, 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.*