# IM vs EMspec

The clearest difference is iOS requirement: IM at 15.6 against EMspec's 17.5. 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.

IM ships an update every 3 months, EMspec every 2 months. Both last shipped on September 29, 2026.

## The numbers

| Metric | IM | EMspec |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 22 MB | 3 MB |
| Requires iOS | **15.6** | 17.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HUANG JUICHI](https://appshunter.io/developer/1072611022) | [EMspec](https://appshunter.io/developer/1407698355) |

## What reviewers say

### IM

[App page](https://appshunter.io/ios/app/im-dsp/id1072611023)

This app offers a comprehensive smart community management system for commercial and residential buildings. It integrates various systems like visitor management, access control, and security alarms, designed with modularity and smart building standards.

**Highlights:** Modular design, Smart building standards compliance, High integration with multiple hardware, Suitable for commercial and residential use, Integrated visitor, access control, and alarm systems, Comprehensive community management

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

**In-app purchases:** none


### EMspec

[App page](https://appshunter.io/ios/app/emspec/id1407698356)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IM free?

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

### Is EMspec free?

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

### Do IM or EMspec have ads?

Neither IM nor EMspec shows ads.

### Which is updated more often, IM or EMspec?

IM ships an update every 3 months, and EMspec every 2 months. Most recently, IM was updated on September 29, 2026 and EMspec on September 29, 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.*