# IMT vs IES

The clearest difference is in-app purchases: IES at none against IMT's 3. IES also leads on update cadence (every 2 months vs every 4 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. IMT sells 3 one-off in-app purchases. IES asks for nothing beyond the download.

IMT ships an update every 4 months, IES every 2 months. Both last shipped on September 10, 2026.

## The numbers

| Metric | IMT | IES |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/imt-methane/id966868178/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 7 MB | 521 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [RGB Consulting Limited](https://appshunter.io/developer/368207904) | [NTT DATA Business Solutions AG (Schweiz)](https://appshunter.io/developer/1465568823) |

## What reviewers say

### IMT

[App page](https://appshunter.io/ios/app/imt-methane/id966868178)

This tool helps emergency responders quickly and reliably construct METHANE or ETHANE messages during major incidents. Designed by experienced responders, it simplifies recalling critical information under pressure to ensure timely and appropriate emergency responses.

**Highlights:** METHANE acronym reporting, ETHANE acronym reporting, Intuitive interface, Quick message building, Reliable incident reporting, Designed by emergency responders

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $3.99 | one-time |


### IES

[App page](https://appshunter.io/ios/app/ies/id1465568824)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IMT free?

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

### Is IES free?

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

### Do IMT or IES have ads?

Neither IMT nor IES shows ads.

### Which is updated more often, IMT or IES?

IMT ships an update every 4 months, and IES every 2 months. Most recently, IMT was updated on September 10, 2026 and IES on September 10, 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.*