# Resistor Tools Pro vs Pressure Vessel Thickness Pro

The clearest difference is rating: Resistor Tools Pro at 4.0 against Pressure Vessel Thickness Pro's 1.0. Resistor Tools Pro also leads on update cadence (every 2 months vs every 41 months) and price ($0.99 vs $3.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Resistor Tools Pro costs $0.99 and Pressure Vessel Thickness Pro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Resistor Tools Pro holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Resistor Tools Pro ships an update every 2 months, Pressure Vessel Thickness Pro every 41 months. The most recent releases landed on October 21, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Resistor Tools Pro | Pressure Vessel Thickness Pro |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/resistor-tools-pro/id825620924/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/pressure-vessel-thickness-pro/id1492059118/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 41 months |
| Monetization | Paid | Paid |
| Size | 4 MB | 1 MB |
| Requires iOS | **12.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Imran Pinjara](https://appshunter.io/developer/1484488781) |

## What reviewers say

### Resistor Tools Pro

[App page](https://appshunter.io/ios/app/resistor-tools-pro/id825620924)

This utility app offers a suite of tools for calculating and finding resistor combinations. It's designed for electronics enthusiasts and professionals needing to determine series, parallel, and voltage divider configurations. Save and share your calculations easily.

**Highlights:** Calculate series/parallel resistance, Find resistor combinations for desired resistance, Voltage divider ratio and value calculation, Inverting amplifier gain calculation, Save combinations to CSV, Share via AirDrop, Upload CSV to iCloud Drive

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Resistor Tools Pro free?

Resistor Tools Pro costs $0.99, with no in-app purchases.

### Is Pressure Vessel Thickness Pro free?

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

### Which has better reviews, Resistor Tools Pro or Pressure Vessel Thickness Pro?

Resistor Tools Pro is rated higher. Resistor Tools Pro averages 4.0 out of 5 from 1 ratings, while Pressure Vessel Thickness Pro averages 1.0 from 1 ratings.

### Do Resistor Tools Pro or Pressure Vessel Thickness Pro have ads?

Neither Resistor Tools Pro nor Pressure Vessel Thickness Pro shows ads.

### Which is updated more often, Resistor Tools Pro or Pressure Vessel Thickness Pro?

Resistor Tools Pro ships an update every 2 months, and Pressure Vessel Thickness Pro every 41 months. Most recently, Resistor Tools Pro was updated on October 21, 2026 and Pressure Vessel Thickness Pro on October 29, 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.*