# Solaris Optics vs E2M (Engineer with EM waves)

The clearest difference is review sentiment: E2M (Engineer with EM waves) at 100% against Solaris Optics's 0%. Solaris Optics's advantage is in-app purchases (none vs 3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. E2M (Engineer with EM waves) sells 3 in-app purchases, starting at $7.99 per month. Solaris Optics asks for nothing beyond the download.

Solaris Optics ships an update every 3 weeks, E2M (Engineer with EM waves) fortnightly. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Solaris Optics | E2M (Engineer with EM waves) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (6 ratings)](https://appshunter.io/ios/app/solaris-optics/id1580420859/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Size | 50 MB | 80 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Solaris Oilfield Infrastructure, LLC](https://appshunter.io/developer/1201366762) | [ComPhysics](https://appshunter.io/developer/1821978540) |

## What reviewers say

### Solaris Optics

[App page](https://appshunter.io/ios/app/solaris-optics/id1580420859)

Monitor industrial equipment remotely for maintenance and repair. Designed for field personnel to keep track of machinery status and facilitate timely interventions.

**Highlights:** Remote equipment monitoring, Maintenance tracking, Repair facilitation, Field personnel support, Industrial equipment oversight

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Solaris Optics free?

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

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

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

### Do Solaris Optics or E2M (Engineer with EM waves) have ads?

Neither Solaris Optics nor E2M (Engineer with EM waves) shows ads.

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

Solaris Optics ships an update every 3 weeks, and E2M (Engineer with EM waves) fortnightly. Most recently, Solaris Optics was updated on October 15, 2026 and E2M (Engineer with EM waves) on October 7, 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.*