# Emus EVGUI vs EFA

The clearest difference is iOS requirement: Emus EVGUI at 9.0 against EFA's 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, EFA every 2 months. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Emus EVGUI | EFA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 22 MB | 36 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EMUS UAB](https://appshunter.io/developer/1242820283) | [EFAFLEX Tor- und Sicherheitssysteme GmbH & Co. KG](https://appshunter.io/developer/1474594176) |

## 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


### EFA

[App page](https://appshunter.io/ios/app/efa-smartconnect/id1474594177)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Emus EVGUI free?

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

### Is EFA free?

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

### Do Emus EVGUI or EFA have ads?

Neither Emus EVGUI nor EFA shows ads.

### Which is updated more often, Emus EVGUI or EFA?

Emus EVGUI ships an update every 3 months, and EFA every 2 months. Most recently, Emus EVGUI was updated on October 4, 2026 and EFA on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*