Velocity Triangles Analysis vs AeroRotationSim
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Velocity Triangles Analysis
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VTA app is a velocity analysis application of a turbomachinery stage. The user can easily extract useful results and velocity diagrams by importing some dimensionless sizes, input-output angles and general geometric features. This application gives also the ability to compare cases with different input parameters. Through a quick and easy analysis of the velocity triangles inside a turbine or a compressor the student could experiment and thus gain a deeper understanding of the operation of an energy system. It has been developed for education purposes.
AeroRotationSim
This educational tool helps aerospace and physics students understand the rotational dynamics of rigid bodies. It covers key concepts like Euler angles, quaternions, and angular momentum, aiding in the study of attitude control systems.
- Euler angles
- Quaternions
- Direction cosine matrices
- Angular velocity and momentum
- Space and body cones
- Poinsot's construction
- Gravity gradient torque
- Attitude control system torque
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This app is designed as a learning aid for students of aerospace engineering or physics. It focuses on the attitude and rotational dynamics of rigid bodies. Use it to learn about Euler angles, quaternions, direction cosine matrices, angular velocity and momentum, space and body cones, Poinsot's construction, gravity gradient torque, and attitude control system torque.
Screenshots
Verdict
The clearest difference is update cadence: Velocity Triangles Analysis at every 2 days against AeroRotationSim's every 6 months. Velocity Triangles Analysis also leads on iOS requirement (12.0 vs 18.5). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Velocity Triangles Analysis ships an update every 2 days, AeroRotationSim every 6 months. The most recent releases landed on October 27, 2026 and October 22, 2026 respectively.
| Parameter | Velocity Triangles Analysis | AeroRotationSim |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 days — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 52 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Aristotle University of Thessaloniki | Roger Eastman |
In-app purchases
Velocity Triangles Analysis
No in-app purchases
AeroRotationSim
No in-app purchases
Questions
Is Velocity Triangles Analysis free?
Is AeroRotationSim free?
Do Velocity Triangles Analysis or AeroRotationSim have ads?
Which is updated more often, Velocity Triangles Analysis or AeroRotationSim?
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