# PROTEUS vs Optimal°

The clearest difference is rating: Optimal° at 4.9 against PROTEUS's 3.0. Optimal° also leads on ratings volume (7 vs 1). PROTEUS's advantage is iOS requirement (12.2 vs 15.1). 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.

Optimal° holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: Optimal° has 7 ratings behind it against 1, so its average is the more settled of the two.

PROTEUS ships an update every 7 months, Optimal° every 5 months. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | PROTEUS | Optimal° |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/proteus-suit/id6449088465/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/optimal/id6473653236/reviews)** |
| Number of ratings | 1 | **7** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 16 MB | 19 MB |
| Requires iOS | **12.2** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Guangdong Bote Health Technology Co., Ltd.](https://appshunter.io/developer/1482249834) | [Its Optimal LLC](https://appshunter.io/developer/1719356914) |

## What reviewers say

### PROTEUS

[App page](https://appshunter.io/ios/app/proteus-suit/id6449088465)

Control your personal EMS dry-suit and track your training progress with this app. It offers effective workouts, joint-friendly exercises, and greater muscle activation, suitable for various health conditions and busy schedules.

**Highlights:** Control EMS dry-suit, Track training progress, Effective workouts, Joint-friendly exercises, Muscle activation boost, OnDemand workouts, Live group workouts

**Features:** macOS Compatibility

**In-app purchases:** none


### Optimal°

[App page](https://appshunter.io/ios/app/optimal/id6473653236)

This app provides remote control and monitoring for a specific brand of tankless water heaters. Users can adjust temperature, track performance metrics, and receive diagnostic information for efficient hot water management.

**Highlights:** Set water heater output temperature, Monitor unit activity state, Track flow rate and energy consumption, View inlet and outlet water temperatures, Access diagnostics and error codes, Enable Vacation Mode

**In-app purchases:** none


## Frequently asked questions

### Is PROTEUS free?

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

### Is Optimal° free?

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

### Which has better reviews, PROTEUS or Optimal°?

Optimal° is rated higher. PROTEUS averages 3.0 out of 5 from 1 ratings, while Optimal° averages 4.9 from 7 ratings.

### Do PROTEUS or Optimal° have ads?

Neither PROTEUS nor Optimal° shows ads.

### Which is updated more often, PROTEUS or Optimal°?

PROTEUS ships an update every 7 months, and Optimal° every 5 months. Most recently, PROTEUS was updated on October 5, 2026 and Optimal° on September 29, 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.*