# EP vs Overkill Solar

The clearest difference is review sentiment: Overkill Solar at 100% against EP's 15%. Overkill Solar also leads on rating (4.7 vs 2.0). EP's advantage is update cadence (every 2 months vs every 4 months) and iOS requirement (8.0 vs 13.4). On price, ratings volume, 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.

Overkill Solar holds the better App Store score, 4.7 against 2.0. Both are backed by a comparable volume of ratings — 23 and 16 respectively. Written reviews point the same way: 15% of EP's written reviews are positive against 100% of Overkill Solar's.

EP ships an update every 2 months, Overkill Solar every 4 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | EP | Overkill Solar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (23 ratings)](https://appshunter.io/ios/app/ep-01/id1330876647/reviews) | **[4.7 (16 ratings)](https://appshunter.io/ios/app/overkill-solar/id6444233824/reviews)** |
| Number of ratings | **23** | 16 |
| Positive reviews | 15.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 30 MB | 21 MB |
| Requires iOS | **8.0** | 13.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BEIJING EPSOLAR TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1330876646) | [Overkill Solar LLC](https://appshunter.io/developer/1653276724) |

## 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


### Overkill Solar

[App page](https://appshunter.io/ios/app/overkill-solar/id6444233824)

This app connects to a solar battery management system to provide detailed monitoring and control. Users can track cell voltage, capacity, current, and manage charging/discharging ports. It also offers advanced configuration options for calibration, balancing, and protection settings.

**Highlights:** Monitor cell voltage and capacity, Control charging and discharging ports, Calibrate voltage and current, Configure balancer and protection values, Log voltage, current, and power, Monitor BMS alarms and temperature

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EP free?

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

### Is Overkill Solar free?

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

### Which has better reviews, EP or Overkill Solar?

Overkill Solar is rated higher. EP averages 2.0 out of 5 from 23 ratings, while Overkill Solar averages 4.7 from 16 ratings.

### Do EP or Overkill Solar have ads?

Neither EP nor Overkill Solar shows ads.

### Which is updated more often, EP or Overkill Solar?

EP ships an update every 2 months, and Overkill Solar every 4 months. Most recently, EP was updated on October 16, 2026 and Overkill Solar on October 14, 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.*