Mohr's Circle vs StrucMaster HD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mohr's Circle
This application assists users in performing Mohr's Circle calculations and verifying their diagrams. It offers solutions for 2D plane stress, calculates various stress values, and generates graphical representations of stress states. Users can also share results and store multiple stress states.
- 2D Plane Stress Mohr's Circle Solutions
- Max, Min, and Shear Stress Calculations
- Principal Stress Plane Angle
- Mohr's Circle Diagram
- Stress State Rotation Views
- Shareable Results
- Unit Conversion (English/Metric)
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Do you need to perform a Mohr's Circle calculation? Would you like to make sure you Mohr's Circle diagram is correct? With the power of your iOS device and this app, you can do this quickly and easily. (5 Stars) "Perfect…Great tool, great app!" -The fever, the focus Mohr's Circle Calculates: ● 2D Plane Stress Mohr's Circle Solutions ● Max Stress ● Min Stress ● Max Shear Stress ● Average Stress ● Principal Stress Plane Angle ● Max Shear Stress Plane Angle ● The normal stress at an arbitrary angle ● The tangential stress at an arbitrary angle ● The shear stress at an arbitrary angle Mohr's Circle Graphs 4 Views Including: ● Mohr's Circle Diagram ● Stress State Rotated to the Principal Stress Plane ● Stress State Rotated to the Max Shear Stress Plane ● Stress State Rotated to an arbitrary angle Mohr's Circle Features: ● Universal App (Designed for both the iPhone and iPad) ● Share your results via a printout or email ● View the equations used to calculate the results ● Store as many stress states as you want for future reference Units Included! Independently set input and output units both English and Metric. Check out our other engineering apps by searching the App Store for: • Pressure Vessel Pro • Moments of Inertia • Stress Concentrations Pro • Stress Intensity Factors Pro or search J.R.Hobbs to see them all. AppStore.com/JRHobbs
StrucMaster HD
This app allows users to define and analyze structural mechanics problems on their iPad. It offers powerful functions for internal force diagrams, dynamics, influence lines, and stability analysis, with detailed solving steps provided by AI. Users can create complex structures with non-integer element lengths.
- Define custom structures
- Internal force diagram analysis
- Dynamics and stability analysis
- Influence line calculations
- AI-powered detailed solving steps
- MultiSelect command for complex structures
- Offline analysis
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【Introduction】 You will enjoy the procedure of defining your own structure with only several steps and have it analyzed by this StrucMaster HD. Powerful functions inside can deal with internal force diagram, dynamics, influence line and stability analysis. The Intelligence part can provide detailed solving steps. The MultiSelect command can help you establish the large structure just as in CAD, it can also help designers define structures with non-integer length elements. All of the procedures are done by the artificial intelligence in your iPad, no matter whether you are connected to the Internet. Convenient, powerful, no delays, what are you waiting for? Actually, you can download another app, named StrucMaster, if you want to analyze the structure on your iPhone. But the iPad version is more elegant, which takes us most of efforts. If you have any question, you can contact us by our e-mail address structuremaster@163.com or tell us in Facebook. Our Facebook website: https://www.facebook.com/StrucMaster
Screenshots
Verdict
The clearest difference is price: StrucMaster HD at Free against Mohr's Circle's $5.99. StrucMaster HD also leads on update cadence (every 6 months vs every 15 months) and iOS requirement (8.0 vs 12.0). Mohr's Circle's advantage is rating (3.3 vs 2.3) and in-app purchases (none vs 1). On review sentiment, ratings volume and ads 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
StrucMaster HD is free to download; Mohr's Circle costs $5.99 up front. StrucMaster HD sells 1 one-off in-app purchase. Mohr's Circle asks for nothing beyond the download.
Mohr's Circle holds the better App Store score, 3.3 against 2.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews complicate that: 43% of Mohr's Circle's written reviews are positive against 50% of StrucMaster HD's, so the app with the better star average is not the one people write more warmly about.
Mohr's Circle ships an update every 15 months, StrucMaster HD every 6 months. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.
| Parameter | Mohr's Circle | StrucMaster HD |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 3.3 (3 ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 42.9% of reviews | 50.0% of reviews — better |
| Number of ratings | 3 | 3 |
| Update frequency | Every 15 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 12.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 86 MB |
| Age rating | 4+ | 4+ |
| Developer | J.R.Hobbs | 颖达 陈 |
Customer experience
Mohr's Circle
StrucMaster HD
In-app purchases
Mohr's Circle
No in-app purchases
StrucMaster HD
- Advanced Function Forever$3.99
Questions
Is Mohr's Circle free?
Is StrucMaster HD free?
Which has better reviews, Mohr's Circle or StrucMaster HD?
Do Mohr's Circle or StrucMaster HD have ads?
Which is updated more often, Mohr's Circle or StrucMaster HD?
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