# Pressure Vessel Thickness Pro vs Vector Calculator Plus

The clearest difference is rating: Vector Calculator Plus at 2.5 against Pressure Vessel Thickness Pro's 1.0. Vector Calculator Plus also leads on price ($2.99 vs $3.99) and iOS requirement (13 vs 16.1). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

Pressure Vessel Thickness Pro costs $3.99 and Vector Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Vector Calculator Plus holds the better App Store score, 2.5 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Pressure Vessel Thickness Pro ships an update every 41 months, Vector Calculator Plus every 43 months. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Pressure Vessel Thickness Pro | Vector Calculator Plus |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/pressure-vessel-thickness-pro/id1492059118/reviews) | **[2.5 (2 ratings)](https://appshunter.io/ios/app/vector-calculator-plus/id1630864948/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 41 months** | Every 43 months |
| Monetization | Paid | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | 16.1 | **13** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Pressure Vessel Thickness Pro

[App page](https://appshunter.io/ios/app/pressure-vessel-thickness-pro/id1492059118)

Calculate the required design and nominal thickness for various pressure vessel components, including shells, heads, and cones, according to ASME Section VIII Div 1 codes. This offline tool offers high performance for engineers in process equipment manufacturing.

**Highlights:** Shell thickness calculation, Head thickness calculation (Hemi, Tori, Ellipsoidal), Cone thickness calculation, ASME Section VIII Div 1 compliance, Offline functionality, High performance

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

**In-app purchases:** none


### Vector Calculator Plus

[App page](https://appshunter.io/ios/app/vector-calculator-plus/id1630864948)

This app simplifies vector addition for students and educators. It allows for quick calculations of multiple vectors, visualizing the results with generated graphs. Users can customize graph elements and save images for later use.

**Highlights:** Instant vector calculation, Add multiple vectors by x, y, magnitude, or angle, Generate vector images, Save vector images to camera roll, Customize graph display options, Set background color for graphs

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

**In-app purchases:** none


## Frequently asked questions

### Is Pressure Vessel Thickness Pro free?

Pressure Vessel Thickness Pro costs $3.99, with no in-app purchases.

### Is Vector Calculator Plus free?

Vector Calculator Plus costs $2.99, with no in-app purchases.

### Which has better reviews, Pressure Vessel Thickness Pro or Vector Calculator Plus?

Vector Calculator Plus is rated higher. Pressure Vessel Thickness Pro averages 1.0 out of 5 from 1 ratings, while Vector Calculator Plus averages 2.5 from 2 ratings.

### Do Pressure Vessel Thickness Pro or Vector Calculator Plus have ads?

Neither Pressure Vessel Thickness Pro nor Vector Calculator Plus shows ads.

### Which is updated more often, Pressure Vessel Thickness Pro or Vector Calculator Plus?

Pressure Vessel Thickness Pro ships an update every 41 months, and Vector Calculator Plus every 43 months. Most recently, Pressure Vessel Thickness Pro was updated on October 17, 2026 and Vector Calculator Plus on October 24, 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.*