# Offset Calc App ANSI vs WebbSight Legacy

The clearest difference is price: WebbSight Legacy at Free against Offset Calc App ANSI's $6.99. Offset Calc App ANSI's advantage is chart position (#199 vs unranked) and iOS requirement (10.0 vs 16.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

WebbSight Legacy is free to download; Offset Calc App ANSI costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Offset Calc App ANSI ships an update monthly, WebbSight Legacy every 3 weeks. The most recent releases landed on September 21, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Offset Calc App ANSI | WebbSight Legacy |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[5.0 (19 ratings)](https://appshunter.io/ios/app/offset-calc-app-ansi/id1463259532/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Paid | — |
| Best chart rank | **#199** | — |
| Size | 95 MB | 177 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Steffen Weber](https://appshunter.io/developer/1456703068) | [3S Services, LLC](https://appshunter.io/developer/1682514954) |

## What reviewers say

### Offset Calc App ANSI

[App page](https://appshunter.io/ios/app/offset-calc-app-ansi/id1463259532)

**Currently charting:** #199 Top Paid · Productivity (US App Store)

This industrial pipe construction tool calculates pipe offsets and weights according to ANSI/ASME standards. It offers imperial and metric calculations for various pipe sizes and fittings, helping users save material, time, and stress.

**Highlights:** Imperial and metric offset calculations, Pipe and profile weight calculations, ANSI/ASME standard nominal diameters, Calculation with length or elbow angle, Offsets with tee, History of calculations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### WebbSight Legacy

[App page](https://appshunter.io/ios/app/webbsight-legacy/id6447765138)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Offset Calc App ANSI free?

Offset Calc App ANSI costs $6.99, with no in-app purchases.

### Is WebbSight Legacy free?

WebbSight Legacy is free to download, with no in-app purchases.

### Do Offset Calc App ANSI or WebbSight Legacy have ads?

Neither Offset Calc App ANSI nor WebbSight Legacy shows ads.

### Which is updated more often, Offset Calc App ANSI or WebbSight Legacy?

Offset Calc App ANSI ships an update monthly, and WebbSight Legacy every 3 weeks. Most recently, Offset Calc App ANSI was updated on September 21, 2026 and WebbSight Legacy on September 5, 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.*