# 123SmartBMS vs E

The clearest difference is rating: 123SmartBMS at 4.5 against E's 3.5. 123SmartBMS also leads on ratings volume (21 vs 2). E's advantage is review sentiment (100% vs 67%) and iOS requirement (11.0 vs 16.0). 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.

123SmartBMS holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: 123SmartBMS has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 67% of 123SmartBMS's written reviews are positive against 100% of E's, so the app with the better star average is not the one people write more warmly about.

123SmartBMS ships an update monthly, E every 3 weeks. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 123SmartBMS | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (21 ratings)](https://appshunter.io/ios/app/123smartbms/id988285264/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/e-bike-firmware-update/id6449957197/reviews) |
| Number of ratings | **21** | 2 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 190 MB | 39 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Albertronic B.V.](https://appshunter.io/developer/890882604) | [CYC Motor Ltd.](https://appshunter.io/developer/1450795611) |

## What reviewers say

### 123SmartBMS

[App page](https://appshunter.io/ios/app/123smartbms/id988285264)

This app monitors and manages lithium battery packs, ensuring optimal condition and extended lifespan. It tracks cell voltages, temperatures, and currents, while balancing cells during charging. Connect via Bluetooth to view real-time battery status and control charging/discharging.

**Highlights:** Monitors cell voltages and temperatures, Tracks in- and outgoing currents, Balances cells during charging, Bluetooth connectivity for real-time data, Controls charge/discharge signals, Extends battery pack lifespan

**Features:** macOS Compatibility

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-bike-firmware-update/id6449957197)

This utility app allows users to update the firmware for CYC Motor and EBMX controllers. It ensures your electric bike's control system is running the latest software for optimal performance.

**Highlights:** Firmware updates, CYC Motor controller support, EBMX controller support, Software for electric bikes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 123SmartBMS free?

123SmartBMS is free to download, with no in-app purchases.

### Is E free?

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

### Which has better reviews, 123SmartBMS or E?

123SmartBMS is rated higher. 123SmartBMS averages 4.5 out of 5 from 21 ratings, while E averages 3.5 from 2 ratings.

### Do 123SmartBMS or E have ads?

Neither 123SmartBMS nor E shows ads.

### Which is updated more often, 123SmartBMS or E?

123SmartBMS ships an update monthly, and E every 3 weeks. Most recently, 123SmartBMS was updated on October 24, 2026 and E on October 7, 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.*