E2M (Engineer with EM waves) vs MarsBrowser
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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)
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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/
MarsBrowser
A fast and private web browser offering built-in ad and tracker blocking. It provides optional AI tools for summarizing and explaining web pages, along with flexible tab organization features like Spaces and split view.
- Built-in ad and tracker blocking
- Optional AI tools for page summarization
- Flexible tab organization with Spaces
- Split view and multiple windows
- Private browsing mode
- On-device content blocking
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Mars is a fast, focused browser with powerful protection, flexible tab organization, and optional AI tools built around the page you are viewing. CLEANER BROWSING Built-in blocking helps stop ads, trackers, popups, and supported video ads without an extra extension. AI BESIDE THE PAGE Optional AI tools can summarize, explain, and help with the page you are viewing. Features are used only when you invoke them and may require an eligible Mars plan. ROOM FOR EVERY MISSION Keep work, research, and play separate with Spaces. On larger screens, use split view and multiple windows to keep related pages together. PRIVATE BY DESIGN Browse without a Mars account. Content blocking runs on-device, and your browsing history is stored locally by default. MORE OF THE WEB Save downloads, use private tabs, and choose your preferred search engine. SUBSCRIPTIONS AND TERMS Some features require an optional monthly Mars subscription. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel them in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://marbrowser.com/privacy - Support URL: https://marbrowser.com/support - Marketing URL (optional): https://marbrowser.com
Screenshots
Verdict
The clearest difference is update cadence: MarsBrowser at every 2 days against E2M (Engineer with EM waves)'s fortnightly. On price, review sentiment, ads and in-app purchases 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
Both are free to download. E2M (Engineer with EM waves) sells 3 in-app purchases, starting at $7.99 per month and MarsBrowser sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
E2M (Engineer with EM waves) ships an update fortnightly, MarsBrowser every 2 days. The most recent releases landed on October 30, 2026 and November 13, 2026 respectively.
| Parameter | E2M (Engineer with EM waves) | MarsBrowser |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (8 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 80 MB | 227 MB |
| Age rating | 4+ | 17+ |
| Developer | ComPhysics | KeyDataAI |
Customer experience
E2M (Engineer with EM waves)
MarsBrowser
In-app purchases
E2M (Engineer with EM waves)
- Standard: 1 month subscription7 Days trial$7.991 Month
- Standard: 1 year subscription7 Days trial$79.991 Year
- E2M Lifetime License$239.99
MarsBrowser
- Basic$0.991 Month
- Mars Live$19.991 Month
Questions
Is E2M (Engineer with EM waves) free?
Is MarsBrowser free?
Do E2M (Engineer with EM waves) or MarsBrowser have ads?
Which is updated more often, E2M (Engineer with EM waves) or MarsBrowser?
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