A vs Structural Engineering Calc.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A
Analyze 2D truss problems quickly on your mobile device. Create standard or custom truss structures, manage material properties, and generate PDF reports with flexible unit options.
- Standard truss templates (18 types)
- Custom truss creation
- Flexible unit system
- Built-in material library
- PDF reporting and email export
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The easy and fastest way to analyze the 2D-Truss problem right on your iPhone & iPod Touch. Featuring: • Standard Truss Templates: with the standard truss template (18 types of truss for initial version) , you can easily create and config your truss as required. • "Custom Truss"; If the built-in standard truss template doesn't match your requirement, "Custom" your own Truss is also easy to create due to the Node & Element generating features. • Unit Flexibility: very flexible in Units system, you can choose any units at your convenience without the requirement to restart the application and the unit system is saved per your truss's project. For example you use m. as node coordinations while you choose mm. for the deflection of the nodes or you can even choose in. or ft. for nodes's deflection (if you really need). • Buit-in material sections library where you can adjust any material's properties with no effect to other truss project. The options to create your own material library will be available for the next update. • PDF Reporting: All result information of your truss are shown in PDF and also you can email this result.
Structural Engineering Calc.
This app provides 59 essential structural engineering formulas for columns, beams, base plates, composite beams, and connections. It offers instant demand/capacity checks, a built-in AISC section database, and material references, supporting both USCS and SI units for on-site or office use.
- 59 structural formulas
- Instant demand/capacity checks
- Built-in AISC section database
- Material and code references
- USCS & SI unit support
- Pass/Fail visual indicators
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Structural Engineering Calculator delivers 59 AISC and ACI structural formulas with instant results, demand/capacity checks, a built-in AISC section database, and material references — all in one app. Whether you’re on site, in the office, or reviewing drawings, every calculation you need is in your pocket. 59 STRUCTURAL FORMULAS COLUMNS Critical Ratio (Cc), Effective Length Factor (K), Slenderness Ratio (KL/r), Allowable Compressive Stress (Sr less than Cc), Allowable Compressive Stress (Sr greater than Cc), Safety Factor, Maximum Axial Load. BEAMS Shear Capacity of Flexural Members, Allowable Bending Stress (Compact and Noncompact), Moment Gradient Factor (Cb), Allowable Flange Bending Stress, Plastic Moment (Mp), Lateral Unbraced Lengths (Lp and Lr), Limiting Buckling Moment (Mr), Nominal Moment (Mn), Critical Elastic Moment (Mcr), Allowable Shear Stress, Beam Deflection for UDL and Point Load. BASE PLATES Base Plate Area, Plate Thickness, Bearing Pressure, Flange and Web Thickness, Plate Dimensions N and B. COMPOSITE BEAMS Horizontal Shear for Concrete and Steel, Number of Shear Connectors, Transformed Section Properties, Modular Ratio, Elastic Neutral Axis. CONNECTIONS Allowable Shear with Tension Field Action, Allowable Bearing Stress for Rollers and Rockers, Axial Stress for Concentrated Loads, Allowable Bearing Stress on Fasteners, Number of Shear Connectors, Total Horizontal Shear. AISC CODE REFERENCES Every formula links directly to AISC and ACI clauses — AISC 360-16, AISC ASD 9th Edition, ACI 318-19, and AISC Design Guide 3. PASS / FAIL CHECK Instant visual adequacy check with demand/capacity ratio — green for PASS, red for FAIL. AISC SECTION PICKER Browse W-shapes (AISC 15th Edition) and auto-fill section properties instantly. REFERENCE TAB Built-in library with W-sections (W4–W44), ASTM materials (A36, A992, A572, A500, A325, A490, F1554), weld electrodes, concrete grades, and codes. USCS & SI UNITS Switch anytime between USCS (in, kip, ksi) and SI (mm, MPa) with automatic conversion. All section and material data included. Supports both USCS and SI units. Compatible with iPhone and iPad. One-time purchase — no subscriptions. References: AISC Steel Construction Manual 15th Edition, AISC 360-16, AISC ASD 9th Edition, ACI 318-19, AISC Design Guide 3.
Screenshots
Verdict
The clearest difference is rating: Structural Engineering Calc. at 4.5 against A's 2.3. Structural Engineering Calc. also leads on ratings volume (20 vs 3). A's advantage is update cadence (every 6 weeks vs every 10 months) and review sentiment (15% vs 0%). On ads, in-app purchases, monetization model 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
A costs $4.99 and Structural Engineering Calc. $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Structural Engineering Calc. holds the better App Store score, 4.5 against 2.3. That said, the two scores are not equally well evidenced: Structural Engineering Calc. has 20 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 15% of A's written reviews are positive against 0% of Structural Engineering Calc.'s, so the app with the better star average is not the one people write more warmly about.
A ships an update every 6 weeks, Structural Engineering Calc. every 10 months. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.
| Parameter | A | Structural Engineering Calc. |
|---|---|---|
| Price | $4.99 — better | $5.99 |
| Rating | 2.3 (3 ratings) | 4.5 (20 ratings) — better |
| Positive reviews | 15.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 | 20 — better |
| Update frequency | Every 6 weeks — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #191 — better | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 47 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Jutarus Ratanasethakul | V PUGAZHENTHI |
Customer experience
A
Structural Engineering Calc.
In-app purchases
A
No in-app purchases
Structural Engineering Calc.
No in-app purchases
Questions
Is A free?
Is Structural Engineering Calc. free?
Which has better reviews, A or Structural Engineering Calc.?
Do A or Structural Engineering Calc. have ads?
Which is updated more often, A or Structural Engineering Calc.?
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