WeldEquations vs CSiUnits
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WeldEquations
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Useful for the preliminary sizing of welds, WeldEquations is an engineering calculator app that computes the section properties for typical welding patterns used in steel construction. After selecting a Weld Group, the user enters the dimensions for the depth and width. The section properties for the Weld Group, including the area, section moduli and polar moment of inertia, are instantly calculated. For practicality, both weld group dimensions are limited to a minimum of 0.25" and a maximum of 100". The equations used by the app are available for reference and manual verification.
CSiUnits
This application provides a comprehensive tool for converting units across various scientific disciplines and everyday needs. It offers over 70 conversion options, catering to professionals, students, and anyone requiring precise unit transformations.
- Multiple one-time conversion lists
- Conversions for lifestyle and science
- Over 70 conversion options
- Numeric value input
- Converted values to all possible units
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CSiUnits is an app that helps in conversion of units. Target Users: • Individuals who need simple to complex unit conversion • Engineers, consultants and various professionals • Students and faculty Key Features: • Multiple one time conversion list • Conversions for various lifestyle needs and branches of science • More than 70 conversions to choose from Key Input: • Numeric value to be converted • Selected primary unit Key Output: • Converted values to all possible units
Screenshots
Verdict
The clearest difference is update cadence: CSiUnits at monthly against WeldEquations's every 12 months. CSiUnits also leads on iOS requirement (9.0 vs 26.0). 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.
WeldEquations ships an update every 12 months, CSiUnits monthly. The most recent releases landed on September 27, 2026 and September 17, 2026 respectively.
| Parameter | WeldEquations | CSiUnits |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (4 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 12 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Glendale Coding Labs, Inc | Computers and Structures, Inc. |
In-app purchases
WeldEquations
No in-app purchases
CSiUnits
No in-app purchases
Questions
Is WeldEquations free?
Is CSiUnits free?
Do WeldEquations or CSiUnits have ads?
Which is updated more often, WeldEquations or CSiUnits?
Other comparisons
