# Virtual Flange Slide Rule vs Weldbend Field Reference App

The clearest difference is review sentiment: Virtual Flange Slide Rule at 100% against Weldbend Field Reference App's 50%. Virtual Flange Slide Rule also leads on rating (5.0 vs 3.1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Virtual Flange Slide Rule holds the better App Store score, 5.0 against 3.1. Both are backed by a comparable volume of ratings — 13 and 38 respectively. Written reviews point the same way: 100% of Virtual Flange Slide Rule's written reviews are positive against 50% of Weldbend Field Reference App's.

Virtual Flange Slide Rule ships an update every 4 months, Weldbend Field Reference App every 2 months. The most recent releases landed on September 14, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Virtual Flange Slide Rule | Weldbend Field Reference App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (13 ratings)](https://appshunter.io/ios/app/virtual-flange-slide-rule/id546358145/reviews)** | [3.1 (38 ratings)](https://appshunter.io/ios/app/weldbend-field-reference-app/id563044323/reviews) |
| Number of ratings | 13 | **38** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 3 MB | 29 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [American Certified Equipment, Inc.](https://appshunter.io/developer/546358148) | [Weldbend Corporation](https://appshunter.io/developer/563044326) |

## What reviewers say

### Virtual Flange Slide Rule

[App page](https://appshunter.io/ios/app/virtual-flange-slide-rule/id546358145)

Access essential measurements and dimensional data for API 6A integral flanges. This tool provides quick access to critical specifications for engineering and industrial applications.

**Highlights:** API 6A integral flange data, Relevant measurements, Dimensional data access, Engineering specifications

**Features:** macOS Compatibility

**In-app purchases:** none


### Weldbend Field Reference App

[App page](https://appshunter.io/ios/app/weldbend-field-reference-app/id563044323)

Access dimensional data for carbon steel butt-weld fittings and flanges. This digital companion also provides technical and general information for carbon steel pipe systems.

**Highlights:** Dimensional data for butt-weld fittings, Dimensional data for flanges, Technical information for carbon steel pipe systems, General information for carbon steel pipe systems

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Virtual Flange Slide Rule free?

Virtual Flange Slide Rule is free to download, with no in-app purchases.

### Is Weldbend Field Reference App free?

Weldbend Field Reference App is free to download, with no in-app purchases.

### Which has better reviews, Virtual Flange Slide Rule or Weldbend Field Reference App?

Virtual Flange Slide Rule is rated higher. Virtual Flange Slide Rule averages 5.0 out of 5 from 13 ratings, while Weldbend Field Reference App averages 3.1 from 38 ratings.

### Do Virtual Flange Slide Rule or Weldbend Field Reference App have ads?

Neither Virtual Flange Slide Rule nor Weldbend Field Reference App shows ads.

### Which is updated more often, Virtual Flange Slide Rule or Weldbend Field Reference App?

Virtual Flange Slide Rule ships an update every 4 months, and Weldbend Field Reference App every 2 months. Most recently, Virtual Flange Slide Rule was updated on September 14, 2026 and Weldbend Field Reference App on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*