# Pipe Expansion Calculator vs Bellows Design Software

The clearest difference is price: Bellows Design Software at Free against Pipe Expansion Calculator's $0.99. Bellows Design Software also leads on update cadence (monthly vs every 38 months). Pipe Expansion Calculator's advantage is in-app purchases (none vs 2). On rating, ratings volume, ads and device support there is nothing between them.

Bellows Design Software is free to download; Pipe Expansion Calculator costs $0.99 up front. Bellows Design Software sells 2 in-app purchases, starting at $34.99 per month. Pipe Expansion Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Pipe Expansion Calculator against 5.0 for Bellows Design Software. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Pipe Expansion Calculator ships an update every 38 months, Bellows Design Software monthly. The most recent releases landed on June 5, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Pipe Expansion Calculator | Bellows Design Software |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/pipe-expansion-calculator/id1622825111/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/bellows-design-software/id1635945221/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 0 MB | 26 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [H3 Apps, LLC](https://appshunter.io/developer/598620927) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## What reviewers say

### Pipe Expansion Calculator

[App page](https://appshunter.io/ios/app/pipe-expansion-calculator/id1622825111)

Calculate pipe expansion and contraction due to temperature changes. Supports common materials and both Imperial and Metric units. Easily share results via text or email for better pipe system design.

**Highlights:** Temperature-based expansion/contraction calculation, Supports common pipe materials, Imperial and Metric unit handling, Share results via text/email

**Features:** macOS Compatibility

**In-app purchases:** none


### Bellows Design Software

[App page](https://appshunter.io/ios/app/bellows-design-software/id1635945221)

This application assists in designing metallic bellows type expansion joints according to EJMA Standards. It allows users to input various design parameters and movement inputs to ensure safe and reliable usage. The software performs comprehensive calculations and checks against EJMA conditions for different bellows configurations and materials.

**Highlights:** Design metallic bellows expansion joints, Input internal diameter, convolution height, ply thickness, pitch, and number of plies, Set design pressure, temperature, and movements, Check design parameters against EJMA Standards, Calculations for single and dual bellows, Includes vibration and bellows forming methods, Calculations for tie rods, lugs plate, and hinges

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access for Bellows | $34.99 | per month |
| All Access for Bellows Design | $299.99 | per year |


## Frequently asked questions

### Is Pipe Expansion Calculator free?

Pipe Expansion Calculator costs $0.99, with no in-app purchases.

### Is Bellows Design Software free?

Bellows Design Software is free to download, with in-app purchases available.

### Which has better reviews, Pipe Expansion Calculator or Bellows Design Software?

Pipe Expansion Calculator and Bellows Design Software are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Pipe Expansion Calculator or Bellows Design Software have ads?

Neither Pipe Expansion Calculator nor Bellows Design Software shows ads.

### Which is updated more often, Pipe Expansion Calculator or Bellows Design Software?

Pipe Expansion Calculator ships an update every 38 months, and Bellows Design Software monthly. Most recently, Pipe Expansion Calculator was updated on June 5, 2026 and Bellows Design Software on September 15, 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.*