Comparison

E2M (Engineer with EM waves) vs BMC File Converter

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

Head to head
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 (ฮผm), 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/

About

BMC File Converter

Features
Read full description

BMC File Converter is the fastest, most private way to convert your files. Everything happens on your device โ€” your files never leave your phone. WHAT YOU CAN CONVERT PDF to Images Turn any PDF into high-quality JPG or PNG images. Single-page PDFs produce one image file. Multi-page PDFs are packaged into a ZIP archive with one image per page. Images Convert between JPG, PNG, GIF, WEBP, BMP, TIFF, and ICO. Perfect for meeting format requirements for websites, apps, or email attachments. Audio Convert MP3, WAV, AAC, M4A, OGG, and FLAC files. Ensure compatibility across any device or platform. Video Convert MP4, MOV, AVI, MKV, WEBM, and WMV without sending your videos to any server. Spreadsheets Convert between CSV, XLSX, and XLS instantly. Switch formats for Excel, Numbers, or any data tool. WHY BMC FILE CONVERTER 100% Private โ€” Files never leave your device. No cloud, no account, no data collection. Fast โ€” Native on-device conversion using iOS hardware acceleration. No uploads, no server queues. Conversion History โ€” Every conversion is saved locally so you can share or re-access your files anytime. Dark and Light Mode โ€” Fully supports system appearance. Multi-language โ€” Available in English, Arabic, French, Spanish, and more, with full RTL support. Simple. Private. Powerful.

Screenshots

E2M (Engineer with EM waves)4 screens
BMC File Converter4 screens

Verdict

The call

The clearest difference is in-app purchases: BMC File Converter at none against E2M (Engineer with EM waves)'s 3. BMC File Converter also leads on iOS requirement (15.1 vs 17.6). E2M (Engineer with EM waves)'s advantage is ads (none vs shown). On price and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

Scorecard3 real differences ยท 5 level
E2M (Engineer with EM waves) versus BMC File Converter: the parameters behind the verdict, then further details
ParameterE2M (Engineer with EM waves)BMC File Converter
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyFortnightlyโ€”
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
MonetizationFreemiumโ€”
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS17.615.1 โ€” better
Further details โ€” not scored
Size80 MB35 MB
Age rating4+4+
DeveloperComPhysicsAbderrahmen Ben Mariem

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
None

BMC File Converter

No in-app purchases

Questions

Is E2M (Engineer with EM waves) free?
E2M (Engineer with EM waves) is free to download, with in-app purchases available.
Is BMC File Converter free?
BMC File Converter is free to download, with no in-app purchases.
Do E2M (Engineer with EM waves) or BMC File Converter have ads?
BMC File Converter shows ads; E2M (Engineer with EM waves) does not.

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