# Roberts Hot Tub Controller vs Simmerdial

The clearest difference is review sentiment: Roberts Hot Tub Controller at 67% against Simmerdial's 0%. Roberts Hot Tub Controller also leads on rating (3.3 vs 3.0) and ratings volume (4 vs 1). 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.

Roberts Hot Tub Controller holds the better App Store score, 3.3 against 3.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 67% of Roberts Hot Tub Controller's written reviews are positive against 0% of Simmerdial's.

Roberts Hot Tub Controller ships an update monthly, Simmerdial every 3 weeks. The most recent releases landed on October 8, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Roberts Hot Tub Controller | Simmerdial |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/roberts-hot-tub-controller/id1615724622/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/simmerdial/id6811475757/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 45 MB | 6 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Robert's Hot Tubs, Inc.](https://appshunter.io/developer/1615724624) | [凯 邢](https://appshunter.io/developer/1896777427) |

## What reviewers say

### Roberts Hot Tub Controller

[App page](https://appshunter.io/ios/app/roberts-hot-tub-controller/id1615724622)

Control your hot tub remotely from your iOS device. Adjust temperature, set filtration cycles, and manage pumps. Built-in freeze protection ensures your tub is safe.

**Highlights:** Remote hot tub control, Temperature adjustment, Filtration cycle settings, Pump on/off control, Built-in freeze protection

**Features:** macOS Compatibility

**In-app purchases:** none


### Simmerdial

[App page](https://appshunter.io/ios/app/simmerdial/id6811475757)

A simple kitchen timer app that uses a familiar dial interface for setting and managing cooking times. It offers visual and auditory cues for remaining time and alerts, with customization options for appearance and sound.

**Highlights:** Dial-based time setting, Visual countdown ring, Adjustable timer while running, Lock screen and Dynamic Island countdown, Customizable appearance and sound, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Roberts Hot Tub Controller free?

Roberts Hot Tub Controller is free to download, with no in-app purchases.

### Is Simmerdial free?

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

### Which has better reviews, Roberts Hot Tub Controller or Simmerdial?

Roberts Hot Tub Controller is rated higher. Roberts Hot Tub Controller averages 3.3 out of 5 from 4 ratings, while Simmerdial averages 3.0 from 1 ratings.

### Do Roberts Hot Tub Controller or Simmerdial have ads?

Neither Roberts Hot Tub Controller nor Simmerdial shows ads.

### Which is updated more often, Roberts Hot Tub Controller or Simmerdial?

Roberts Hot Tub Controller ships an update monthly, and Simmerdial every 3 weeks. Most recently, Roberts Hot Tub Controller was updated on October 8, 2026 and Simmerdial on October 26, 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.*