# Breaker Box vs SEM

The clearest difference is rating: Breaker Box at 4.4 against SEM's 3.4. Breaker Box also leads on review sentiment (78% vs 38%) and ratings volume (100 vs 11). SEM's advantage is in-app purchases (none vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Breaker Box sells 1 one-off in-app purchase. SEM asks for nothing beyond the download.

Breaker Box holds the better App Store score, 4.4 against 3.4. That said, the two scores are not equally well evidenced: Breaker Box has 100 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 78% of Breaker Box's written reviews are positive against 38% of SEM's.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 28, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Breaker Box | SEM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (100 ratings)](https://appshunter.io/ios/app/breaker-box-panel-directory/id1459288663/reviews)** | [3.4 (11 ratings)](https://appshunter.io/ios/app/sem-meter/id6468902139/reviews) |
| Number of ratings | **100** | 11 |
| Positive reviews | **77.8% of reviews** | 37.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 123 MB | 31 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brett Pappas](https://appshunter.io/developer/1435218098) | [Hangzhou Dashi Wisdom Technology Co., Ltd.](https://appshunter.io/developer/1822219570) |

## What reviewers say

### Breaker Box

[App page](https://appshunter.io/ios/app/breaker-box-panel-directory/id1459288663)

Easily create custom electrical panel legends. Label phases with colors, tandem breakers, and 3-pole breakers. Print legends in exact sizes for sleeves or door taping.

**Highlights:** Create custom panel legends, Label phases with color, Support for tandem breakers, Support for 3-pole breakers, Print legends in exact sizes, Print for sleeves or door taping

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro License | $9.99 | one-time |


### SEM

[App page](https://appshunter.io/ios/app/sem-meter/id6468902139)

This utility app monitors your household power consumption in real-time, providing historical data and comparisons to help you save on electricity bills. It supports managing multiple devices and customizing electricity fee calculations.

**Highlights:** Real-time power usage monitoring, Historical energy use tracking, Second-to-second, day-to-day, week-to-week, month-to-month, and year-to-year comparisons, Electricity fee gradient calculation, Customizable fee templates, Multiple device management

**In-app purchases:** none


## Frequently asked questions

### Is Breaker Box free?

Breaker Box is free to download, with in-app purchases available.

### Is SEM free?

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

### Which has better reviews, Breaker Box or SEM?

Breaker Box is rated higher. Breaker Box averages 4.4 out of 5 from 100 ratings, while SEM averages 3.4 from 11 ratings.

### Do Breaker Box or SEM have ads?

Neither Breaker Box nor SEM shows ads.

### Which is updated more often, Breaker Box or SEM?

Breaker Box ships an update every 2 weeks, and SEM every 2 weeks. Most recently, Breaker Box was updated on September 28, 2026 and SEM on September 9, 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.*