Comparison

Solaris Optics vs E2M (Engineer with EM waves)

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Solaris Optics

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
Read full description

Solaris Optics allows field personnel to remotely monitor our industrial equipment for maintenance and repair.

About

E2M (Engineer with EM waves)

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
Read full description

Engineer with EM waves (E2M) is a powerful and fast 1D electromagnetic solver designed for engineers, researchers, and students. Analyze complex layered structures, extract photonic bands, and simulate optical properties directly on your iOS device. Key Features: - Advanced 1D EM Solver: Simulate 1D stacked (layered) structures with high-speed performance. - Comprehensive Analysis: Calculate Reflectance, Transmittance, and Absorptance (RTA) as functions of incident angle, thickness, and frequency. - Polarization Control: Analyze arbitrary polarization states. Define complex TE and TM inputs to simulate Linear, Circular, or Elliptical polarization interactions. - Photonic Band Structures: Extract band structures for both TE and TM modes to analyze periodic systems. - Material Library: 1. Built-in integration with the refractiveindex.info database for immediate access to practical material parameters (converts complex refractive index to complex permittivity/permeability assuming non-magnetic media). 2. User-Defined Materials: Create custom materials, including general LHI (Linear, Homogeneous, Isotropic) and Metamaterials (Double Negative/DNG). - Flexible Domain Settings: Switch simulation parameters between Frequency (THz), Wavelength (μm), or Energy (eV). - Data Export: Easily export raw data (.csv) and figures via Email or the iOS Files app for post-processing. Freeware Mode: E2M offers a generous free mode allowing designs of up to 3 layers. It supports infinite periodic repetition of these layers, enabling a wide range of academic calculations and case studies without a subscription. In-App Subscriptions: Unlock the full potential of E2M to design structures with unlimited layers. - Options: One Month, One Year, Lifetime. - Benefit: Removes the 3-layer limitation during the subscription period. - Terms: Subscriptions (excluding Lifetime) automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your Apple Account settings. Legal - Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy Policy: https://comphysics.com/index.php/privacy-policy-2/

Screenshots

Solaris Optics4 screens
E2M (Engineer with EM waves)4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Solaris Optics versus E2M (Engineer with EM waves): the parameters behind the verdict, then further details
ParameterSolaris OpticsE2M (Engineer with EM waves)
PriceFreeFree
Rating3.3 (6 ratings) — better—
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings6 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.6
Further details — not scored
Size50 MB80 MB
Age rating4+4+
DeveloperSolaris Oilfield Infrastructure, LLCComPhysics

Customer experience

Solaris Optics

All ratings6 ratings
Positive50.0%
Neutral16.7%
Negative33.3%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

E2M (Engineer with EM waves)

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Solaris Optics

No in-app purchases

3 purchases

E2M (Engineer with EM waves)

Subscriptions2
  • Standard: 1 month subscription7 Days trial$7.991 Month
  • Standard: 1 year subscription7 Days trial$79.991 Year
One-time1
  • E2M Lifetime License$239.99

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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