# System Sensor Doc Center vs Main Electric Supply

The clearest difference is rating: System Sensor Doc Center at 4.0 against Main Electric Supply's 3.5. System Sensor Doc Center also leads on update cadence (every 2 months vs every 4 months) and iOS requirement (6.1 vs 12.2). 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.

System Sensor Doc Center holds the better App Store score, 4.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

System Sensor Doc Center ships an update every 2 months, Main Electric Supply every 4 months. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | System Sensor Doc Center | Main Electric Supply |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/system-sensor-doc-center/id830535523/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/main-electric-supply/id1395993623/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 6 MB | 38 MB |
| Requires iOS | **6.1** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Honeywell International, Inc.](https://appshunter.io/developer/311222963) | [Main Electric Supply Co.](https://appshunter.io/developer/1266072944) |

## What reviewers say

### System Sensor Doc Center

[App page](https://appshunter.io/ios/app/system-sensor-doc-center/id830535523)

Access a comprehensive library of product documentation, including manuals, catalogs, and installation guides for intelligent fire alarm systems. This app provides essential resources for users of a leading fire safety technology producer.

**Highlights:** Fetch product documents, View manuals, Access catalogs, Find installation resources, Explore fire alarm systems

**In-app purchases:** none


### Main Electric Supply

[App page](https://appshunter.io/ios/app/main-electric-supply/id1395993623)

This app allows users to place orders for electrical supplies. It provides a convenient way to access products and manage purchases on the go. Designed for professionals and businesses needing quick access to electrical components.

**Highlights:** Place electrical supply orders, On-the-go purchasing, Access to product catalog, Manage purchases

**In-app purchases:** none


## Frequently asked questions

### Is System Sensor Doc Center free?

System Sensor Doc Center is free to download, with no in-app purchases.

### Is Main Electric Supply free?

Main Electric Supply is free to download, with no in-app purchases.

### Which has better reviews, System Sensor Doc Center or Main Electric Supply?

System Sensor Doc Center is rated higher. System Sensor Doc Center averages 4.0 out of 5 from 4 ratings, while Main Electric Supply averages 3.5 from 2 ratings.

### Do System Sensor Doc Center or Main Electric Supply have ads?

Neither System Sensor Doc Center nor Main Electric Supply shows ads.

### Which is updated more often, System Sensor Doc Center or Main Electric Supply?

System Sensor Doc Center ships an update every 2 months, and Main Electric Supply every 4 months. Most recently, System Sensor Doc Center was updated on October 13, 2026 and Main Electric Supply on October 3, 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.*