# AE Note vs E2M (Engineer with EM waves)

The clearest difference is update cadence: E2M (Engineer with EM waves) at fortnightly against AE Note's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AE Note sells 4 in-app purchases, starting at $4.99 per month and E2M (Engineer with EM waves) sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

AE Note ships an update monthly, E2M (Engineer with EM waves) fortnightly. The most recent releases landed on September 20, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | AE Note | E2M (Engineer with EM waves) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 59 MB | 80 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [AEDISON TECHNOLOGY PTE. LTD.](https://appshunter.io/developer/1736293832) | [ComPhysics](https://appshunter.io/developer/1821978540) |

## What reviewers say

### AE Note

[App page](https://appshunter.io/ios/app/ae-note/id6479555921)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly Plan | $4.99 | per month |
| Premium Monthly Plan | $19.99 | per month |
| Basic Yearly Plan | $56.99 | per year |
| Premium Yearly Plan | $99.99 | per year |


### E2M (Engineer with EM waves)

[App page](https://appshunter.io/ios/app/e2m-engineer-with-em-waves/id6747601796)

This app is a 1D electromagnetic and optics simulator for iOS devices. It allows engineers, researchers, and students to analyze layered structures, extract photonic bands, and simulate optical properties with advanced polarization control and material libraries.

**Highlights:** 1D EM solver for layered structures, Reflectance, Transmittance, Absorptance analysis, Arbitrary polarization state analysis, Photonic band structure extraction, Integrated material library (refractiveindex.info), User-defined materials, Data export (.csv, figures)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard: 1 month subscription | $7.99 | per month |
| Standard: 1 year subscription | $79.99 | per year |
| E2M Lifetime License | $239.99 | one-time |


## Frequently asked questions

### Is AE Note free?

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

### Is E2M (Engineer with EM waves) free?

E2M (Engineer with EM waves) is free to download, with in-app purchases available.

### Do AE Note or E2M (Engineer with EM waves) have ads?

Neither AE Note nor E2M (Engineer with EM waves) shows ads.

### Which is updated more often, AE Note or E2M (Engineer with EM waves)?

AE Note ships an update monthly, and E2M (Engineer with EM waves) fortnightly. Most recently, AE Note was updated on September 20, 2026 and E2M (Engineer with EM waves) on September 19, 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.*