# EP vs BMS Tool

The clearest difference is review sentiment: BMS Tool at 71% against EP's 15%. BMS Tool also leads on rating (3.9 vs 2.0). EP's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. BMS Tool sells 1 one-off in-app purchase. EP asks for nothing beyond the download.

BMS Tool holds the better App Store score, 3.9 against 2.0. Both are backed by a comparable volume of ratings — 23 and 7 respectively. Written reviews point the same way: 15% of EP's written reviews are positive against 71% of BMS Tool's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | EP | BMS Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (23 ratings)](https://appshunter.io/ios/app/ep-01/id1330876647/reviews) | **[3.9 (7 ratings)](https://appshunter.io/ios/app/bms-tool/id1511343379/reviews)** |
| Number of ratings | **23** | 7 |
| Positive reviews | 15.4% of reviews | **71.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 9 MB |
| Requires iOS | **8.0** | 15.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BEIJING EPSOLAR TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1330876646) | [e77code GmbH](https://appshunter.io/developer/1375405425) |

## What reviewers say

### EP

[App page](https://appshunter.io/ios/app/ep-01/id1330876647)

This communication software connects controllers and inverters. It supports 485 and infrared interfaces, automatically switching content based on device name for simplified operation.

**Highlights:** Controller and inverter communication, Supports 485 interface, Supports infrared controller, Automatic content switching, Simplified user operation

**Features:** macOS Compatibility

**In-app purchases:** none


### BMS Tool

[App page](https://appshunter.io/ios/app/bms-tool/id1511343379)

Monitor your battery management systems via Bluetooth. Supports multiple BMS types including Liontron, XiaoXiang, ANT, and Wattstunde. Offers a screen always-on mode and macOS compatibility.

**Highlights:** Screen Always ON mode, Multiple BMS support, Liontron BMS read-only, XiaoXiang BMS read-only, ANT BMS read-only, Wattstunde LiFePo4 read-only, macOS support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is EP free?

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

### Is BMS Tool free?

BMS Tool is free to download, with in-app purchases available.

### Which has better reviews, EP or BMS Tool?

BMS Tool is rated higher. EP averages 2.0 out of 5 from 23 ratings, while BMS Tool averages 3.9 from 7 ratings.

### Do EP or BMS Tool have ads?

BMS Tool shows ads; EP does not.

### Which is updated more often, EP or BMS Tool?

EP ships an update every 2 months, and BMS Tool every 2 months. Most recently, EP was updated on October 16, 2026 and BMS Tool on October 3, 2026.

---

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