# Sub vs EKG Updater

The clearest difference is rating: Sub at 4.4 against EKG Updater's 1.7. Sub also leads on update cadence (every 5 weeks vs every 4 months) and ratings volume (786 vs 221). EKG Updater's advantage is monetization model (free vs ad-supported). On price, review sentiment, 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.

Sub holds the better App Store score, 4.4 against 1.7. Both are backed by a comparable volume of ratings — 786 and 221 respectively. Written reviews split almost evenly too, at 15% and 14% positive.

Sub ships an update every 5 weeks, EKG Updater every 4 months. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Sub | EKG Updater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (786 ratings)](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284/reviews)** | [1.7 (221 ratings)](https://appshunter.io/ios/app/ekg-updater/id1592355693/reviews) |
| Number of ratings | **786** | 221 |
| Positive reviews | **14.7% of reviews** | 14.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 4 months |
| Monetization | Ad-supported | **Free** |
| Size | 69 MB | 25 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sub-Zero and Wolf](https://appshunter.io/developer/983988992) | [Fellow](https://appshunter.io/developer/1369603449) |

## What reviewers say

### Sub

[App page](https://appshunter.io/ios/app/sub-zero-group-owners-app/id1248991284)

This app enhances your kitchen experience by guiding you through recipes from websites and a curated collection. It allows remote control and monitoring of Sub-Zero refrigeration, Cove dishwashing, and Wolf appliances, ensuring optimal performance and convenience.

**Highlights:** Guided cooking from online recipes, Chef-tested recipes optimized for Wolf appliances, Remote dishwasher control and monitoring, Refrigerator settings and alerts, Filter recipes by cooking mode, Bookmark and share recipes

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Responsive and intuitive app
- 👍 Helpful notifications and alerts
- 🔒 Secure connection to appliances

**What reviewers complain about**

- 🐛 Frequent connection issues and disconnects
- 🔍 Lack of actual temperature monitoring
- 🤔 Confusing setup and pairing process
- 🔍 Missing key features like remote start

**Reported bugs**

- App crashes after recent updates
- Unable to log in or register account
- Appliances disappear from the app
- Firmware update failures brick appliances

**Requested features**

- Add support for Celsius temperature units
- Provide real-time temperature and energy consumption data
- Integrate with smart home platforms like Apple HomeKit


### EKG Updater

[App page](https://appshunter.io/ios/app/ekg-updater/id1592355693)

This application connects your smart kettle to your home Wi-Fi for automatic firmware and feature updates. Ensure your device always has the latest brewing capabilities and performance enhancements.

**Highlights:** Connects to home Wi-Fi, Automatic firmware updates, Installs latest brewing features, Compatible with Stagg EKG Pro models

**In-app purchases:** none

**What reviewers like**

- 👍 Easy firmware updates
- 🚀 Firmware updates work as expected
- 🚀 App does what it claims to do

**What reviewers complain about**

- 🐛 Firmware updates fail to complete
- 🐛 App doesn't detect or connect to kettle
- 🐛 App provides no useful functionality beyond updates
- 🐛 Buggy and unreliable app experience

**Reported bugs**

- Firmware update process gets stuck
- App fails to detect or connect to kettle
- App crashes or provides no feedback during updates

**Requested features**

- Remote kettle control (turn on/off, set temperature)
- Scheduling and timer functionality
- Improved app design and user experience


## Frequently asked questions

### Is Sub free?

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

### Is EKG Updater free?

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

### Which has better reviews, Sub or EKG Updater?

Sub is rated higher. Sub averages 4.4 out of 5 from 786 ratings, while EKG Updater averages 1.7 from 221 ratings.

### Do Sub or EKG Updater have ads?

Neither Sub nor EKG Updater shows ads.

### Which is updated more often, Sub or EKG Updater?

Sub ships an update every 5 weeks, and EKG Updater every 4 months. Most recently, Sub was updated on October 29, 2026 and EKG Updater on November 3, 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.*