# O vs SSAB BendCalc

The clearest difference is review sentiment: O at 83% against SSAB BendCalc's 0%. O also leads on rating (3.8 vs 3.0) and ads (none vs shown). SSAB BendCalc's advantage is iOS requirement (10.0 vs 12.1). On price, ratings volume, in-app purchases and device support there is nothing between them.

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

O holds the better App Store score, 3.8 against 3.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 83% of O's written reviews are positive against 0% of SSAB BendCalc's.

O ships an update every 3 months, SSAB BendCalc every 7 months. The most recent releases landed on June 4, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | O | SSAB BendCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/o-ring/id485346224/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/ssab-bendcalc/id1485856320/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | **Free** | Ad-supported |
| Size | 26 MB | 122 MB |
| Requires iOS | 12.1 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [SSAB AB](https://appshunter.io/developer/508406943) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-ring/id485346224)

This app helps users calculate O-Ring dimensions and find compatible materials for their applications. It provides recommendations based on ISO standards and supports both metric and inch measurements.

**Highlights:** O-Ring housing calculation, O-Ring size recommendations by ISO standard, Quick search by national/international standards, O-Ring tolerance calculation, Metric and inch unit switching, Chemical compatibility check, Integration of Trelleborg Sealing Solutions Videos

**Features:** macOS Compatibility

**In-app purchases:** none


### SSAB BendCalc

[App page](https://appshunter.io/ios/app/ssab-bendcalc/id1485856320)

This app helps metal fabricators determine precise bending settings for specific steel types. It calculates key parameters like bending force, springback, and punch depth in seconds. Results can be saved and shared as PDF reports.

**Highlights:** Predicts springback and punch depth, Calculates maximum bend force, Determines opening angle, Estimates minimum flange height, Saves and shares results as PDF, Supports multiple steel types

**In-app purchases:** none


## Frequently asked questions

### Is O free?

O is free to download, with no in-app purchases.

### Is SSAB BendCalc free?

SSAB BendCalc is free to download, with no in-app purchases.

### Which has better reviews, O or SSAB BendCalc?

O is rated higher. O averages 3.8 out of 5 from 5 ratings, while SSAB BendCalc averages 3.0 from 2 ratings.

### Do O or SSAB BendCalc have ads?

SSAB BendCalc shows ads; O does not.

### Which is updated more often, O or SSAB BendCalc?

O ships an update every 3 months, and SSAB BendCalc every 7 months. Most recently, O was updated on June 4, 2026 and SSAB BendCalc on June 1, 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.*