# Celsius® hollow section design vs My Unit Conversion

The clearest difference is review sentiment: Celsius® hollow section design at 100% against My Unit Conversion's 80%. My Unit Conversion's advantage is device support (4 vs 2) and iOS requirement (8.0 vs 12.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Celsius® hollow section design ships an update every 7 months, My Unit Conversion every 12 months. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Celsius® hollow section design | My Unit Conversion |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 12 months |
| Monetization | Free | Free |
| Size | 11 MB | 37 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Tata Steel IJmuiden B.V.](https://appshunter.io/developer/1346513780) | [Mark Timmings](https://appshunter.io/developer/1583590476) |

## What reviewers say

### Celsius® hollow section design

[App page](https://appshunter.io/ios/app/celsius-hollow-section-design/id1484496183)

This app assists structural engineers in selecting the optimal hollow section size based on design load conditions and buckling length. It calculates and lists suitable sections from a comprehensive range, providing key information like efficiency factor and mass per meter. Users can filter results by size, utilization, embodied CO₂, or weight, and share selections via email or messaging.

**Highlights:** Calculate section size based on axial load and buckling length, Select sections for members in bending, List sections with efficiency factor and mass per meter, Filter results by size, utilization, CO₂, or weight, Classify sections by UK market availability, Share selected sections via email or messaging

**In-app purchases:** none


### My Unit Conversion

[App page](https://appshunter.io/ios/app/my-unit-conversion/id1600275661)

Easily convert units within various categories like length, mass, and temperature. This free application handles decimal conversions and is ad-free, offering a straightforward utility for everyday needs.

**Highlights:** Unit conversion within categories, Supports decimals, Ad-free experience, Multiple categories supported, Simple and straightforward design

**In-app purchases:** none


## Frequently asked questions

### Is Celsius® hollow section design free?

Celsius® hollow section design is free to download, with no in-app purchases.

### Is My Unit Conversion free?

My Unit Conversion is free to download, with no in-app purchases.

### Do Celsius® hollow section design or My Unit Conversion have ads?

Neither Celsius® hollow section design nor My Unit Conversion shows ads.

### Which is updated more often, Celsius® hollow section design or My Unit Conversion?

Celsius® hollow section design ships an update every 7 months, and My Unit Conversion every 12 months. Most recently, Celsius® hollow section design was updated on October 13, 2026 and My Unit Conversion 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.*