# ISO Fits vs steelyard

The clearest difference is review sentiment: ISO Fits at 95% against steelyard's 56%. steelyard's advantage is rating (4.7 vs 4.2) and ratings volume (297 vs 6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. ISO Fits sells 1 one-off in-app purchase and steelyard sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

steelyard holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: steelyard has 297 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 95% of ISO Fits's written reviews are positive against 56% of steelyard's, so the app with the better star average is not the one people write more warmly about.

ISO Fits ships an update every 5 months, steelyard every 2 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | ISO Fits | steelyard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (6 ratings)](https://appshunter.io/ios/app/iso-fits/id396863755/reviews) | **[4.7 (297 ratings)](https://appshunter.io/ios/app/steelyard/id1291109620/reviews)** |
| Number of ratings | 6 | **297** |
| Positive reviews | **94.6% of reviews** | 55.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 66 MB | 7 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [Mohamed Saad](https://appshunter.io/developer/1291109619) |

## What reviewers say

### ISO Fits

[App page](https://appshunter.io/ios/app/iso-fits/id396863755)

Calculate ISO fits and tolerances for shafts and bores. Supports metric and inch units, displays detailed fit definitions, and includes visual charts and educational videos.

**Highlights:** ISO fits calculation, Tolerance class display, Metric/inch unit switching, Tolerance charts, Updated YouTube videos

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version with complete ISO286 Standard | $1.99 | one-time |


### steelyard

[App page](https://appshunter.io/ios/app/steelyard/id1291109620)

This app quickly calculates the weight of steel sections from various international standards. It supports both metric and imperial units and offers offline functionality for convenience. Save your settings and calculations for easy access.

**Highlights:** Steel section weight calculation, Supports EU, USA, Japanese, KOREA standards, Metric and Imperial units, Offline functionality, Save calculations and settings, Advanced search system

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Blocker | $9.99 | one-time |


## Frequently asked questions

### Is ISO Fits free?

ISO Fits is free to download, with in-app purchases available.

### Is steelyard free?

steelyard is free to download, with in-app purchases available.

### Which has better reviews, ISO Fits or steelyard?

steelyard is rated higher. ISO Fits averages 4.2 out of 5 from 6 ratings, while steelyard averages 4.7 from 297 ratings.

### Do ISO Fits or steelyard have ads?

Neither ISO Fits nor steelyard shows ads.

### Which is updated more often, ISO Fits or steelyard?

ISO Fits ships an update every 5 months, and steelyard every 2 months. Most recently, ISO Fits was updated on October 16, 2026 and steelyard on October 17, 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.*