Roughness vs AeroRotationSim
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Roughness
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When it comes to the surface of workpieces, a large number of surface parameters are required in design and manufacture. Before installation or delivery, the workpieces are also verified in quality management. The roughness app from ZEISS provides information on the most common surface parameters with related formulas and graphs.
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: AeroRotationSim at every 6 months against Roughness's every 14 months. Roughness's advantage is iOS requirement (15.0 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.
Roughness ships an update every 14 months, AeroRotationSim every 6 months. The most recent releases landed on October 14, 2026 and October 22, 2026 respectively.
| Parameter | Roughness | AeroRotationSim |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 14 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 26 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Carl Zeiss AG | Roger Eastman |
In-app purchases
Roughness
No in-app purchases
AeroRotationSim
No in-app purchases
Questions
Is Roughness free?
Is AeroRotationSim free?
Do Roughness or AeroRotationSim have ads?
Which is updated more often, Roughness or AeroRotationSim?
Other comparisons
