CompositesAI vs Eng Dynamics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CompositesAI
This AI-powered platform assists composites engineers by providing instant, expert-level answers to questions about material design, calculations, and process optimization. It offers a chat assistant for natural language queries and specialized tools for calculating various material properties and generating meshes.
- AI Chat Assistant for engineering queries
- Calculate beam stiffness matrix
- Calculate plate A, B, D matrices
- Calculate solid stiffness matrix
- Calculate coefficient of thermal expansions
- Mesh generation with Gmsh
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CompositesAI is an AI-powered expert system for composite materials and structures. It brings together trusted engineering knowledge, expert insight, and advanced simulation tools in an easy-to-use conversational interface. Users can ask technical questions in natural language, receive sourced and traceable answers, and connect directly with physics-based and machine-learning simulation tools. CompositesAI helps engineers, researchers, educators, and students access composite knowledge more efficiently and make better-informed engineering decisions.
Eng Dynamics
This app offers practice problems and solutions for engineering Dynamics courses, mirroring textbook structures. It links to a free online eBook for theoretical support. A free version provides limited problems, while a paid version unlocks a comprehensive library.
- Real homework and test problems
- Organized by textbook sections/chapters
- Complete solutions with graphics
- Links to online eBook theory
- Extensive problem library (Pro version)
- Problems used in real engineering classes
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'Eng Dynamics' app provides real homework and test problems for the common engineering course called Dynamics. All problems are organized in sections and chapters common to most textbooks. Each problem has a complete solution with graphics to help you better understand how to solve the problem. Also, each problem has a link to a theory web page for that section at the online eBook (eCoursesBook.com). There is no cost for the online eBook, and it can be accessed outside of the app. The 'Lite' version (free) of the app has a select number of problems, about 50-70. The 'Pro' version ($3.99) has over 400 problems. Neither has ads. Both versions use the internet to pull problems from an online database as needed. Network connection is required to run the app. Each problem is small (less than 20 k) and are vector-based graphics. All problems have been used in real engineering classes. Problems are accessed through an online database, so if any errors are identified, they will be updated and the app will use the corrected version. This program is copyrighted and cannot be distributed without the author's written consent.
Screenshots
Verdict
The clearest difference is ads: Eng Dynamics at none against CompositesAI's shown. Eng Dynamics also leads on iOS requirement (9.0 vs 15.0). CompositesAI's advantage is update cadence (every 9 days vs every 8 months) and ratings volume (17 vs 1). On price, rating, review sentiment 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for CompositesAI against 5.0 for Eng Dynamics. That said, the two scores are not equally well evidenced: CompositesAI has 17 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
CompositesAI ships an update every 9 days, Eng Dynamics every 8 months. The most recent releases landed on October 11, 2026 and September 20, 2026 respectively.
| Parameter | CompositesAI | Eng Dynamics |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (17 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 17 — better | 1 |
| Update frequency | Every 9 days — better | Every 8 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 45 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | APPS BAY LIMITED | Kurt Gramoll |
Customer experience
CompositesAI
Eng Dynamics
In-app purchases
CompositesAI
No in-app purchases
Eng Dynamics
No in-app purchases
Questions
Is CompositesAI free?
Is Eng Dynamics free?
Which has better reviews, CompositesAI or Eng Dynamics?
Do CompositesAI or Eng Dynamics have ads?
Which is updated more often, CompositesAI or Eng Dynamics?
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