# Emus EVGUI vs Ersa TRACE

The clearest difference is review sentiment: Ersa TRACE at 75% against Emus EVGUI's 25%. Emus EVGUI's advantage is iOS requirement (9.0 vs 12.0). 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.

Emus EVGUI ships an update every 3 months, Ersa TRACE every 5 months. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Emus EVGUI | Ersa TRACE |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 22 MB | 38 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EMUS UAB](https://appshunter.io/developer/1242820283) | [Ersa GmbH](https://appshunter.io/developer/1484598243) |

## What reviewers say

### Emus EVGUI

[App page](https://appshunter.io/ios/app/emus-evgui/id1242820284)

This application provides a graphical interface for monitoring electric vehicle battery management systems. It displays key battery parameters and detailed maintenance information, allowing users to track performance and log data for support.

**Highlights:** Graphical dashboard and detail screens, BMS and battery maintenance information, Events log, Landscape and portrait orientation support, Bluetooth connectivity, Data logging for support

**Features:** macOS Compatibility

**In-app purchases:** none


### Ersa TRACE

[App page](https://appshunter.io/ios/app/ersa-trace/id1552856743)

This app enables smart operation of an IoT soldering station via smartphone or web application. It provides real-time temperature display, parameter control for single or multiple stations, and extensive traceability functions.

**Highlights:** Real-time temperature display, Target temperature setting, Soldering parameter control, Multi-station management, Web application integration, Traceability functions

**In-app purchases:** none


## Frequently asked questions

### Is Emus EVGUI free?

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

### Is Ersa TRACE free?

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

### Do Emus EVGUI or Ersa TRACE have ads?

Neither Emus EVGUI nor Ersa TRACE shows ads.

### Which is updated more often, Emus EVGUI or Ersa TRACE?

Emus EVGUI ships an update every 3 months, and Ersa TRACE every 5 months. Most recently, Emus EVGUI was updated on October 4, 2026 and Ersa TRACE on October 2, 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.*