WeldEquations vs J
Price, ratings, monetisation and update history for both apps, side by side β 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".Β Β The equations used by the app are available for reference and manual verification.
J
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J-Weld is a mobile APP which is used to remote welding machines.
Screenshots
Verdict
The clearest difference is update cadence: J at every 3 months against WeldEquations's every 12 months. J also leads on iOS requirement (15.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· 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, J every 3 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.
| Parameter | WeldEquations | J |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 12 months | Every 3 months β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 15.6 β better |
| Further details β not scored | ||
| Size | 7 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Glendale Coding Labs, Inc | ζ·±ε³εΈδ½³ε£«η§ζθ‘δ»½ζιε ¬εΈ |
In-app purchases
WeldEquations
No in-app purchases
J
No in-app purchases
