# Torque Tightening vs O

The clearest difference is rating: O at 5.0 against Torque Tightening's 2.0. Torque Tightening's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ratings volume, update cadence and ads 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, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Torque Tightening ships an update every 9 months, O every 11 months. The most recent releases landed on September 15, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Torque Tightening | O |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/torque-tightening/id1017232833/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/o-ring-master/id1072051820/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 11 months |
| Monetization | Free | Free |
| Size | 14 MB | 47 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CETIM](https://appshunter.io/developer/1017232832) | [GE MAO RUBBER INDUSTRIAL CO., LTD.](https://appshunter.io/developer/1078558543) |

## What reviewers say

### Torque Tightening

[App page](https://appshunter.io/ios/app/torque-tightening/id1017232833)

This utility app helps users find the correct torque settings for various applications. It provides optimal torque values to ensure proper application and safety.

**Highlights:** Determine optimal torque, Suit application cases, Provides torque values

**In-app purchases:** none


### O

[App page](https://appshunter.io/ios/app/o-ring-master/id1072051820)

This app provides a comprehensive offline tool for selecting standard rubber seal sizes, including O-Rings, X-Rings, and Back-Up Rings. It offers dimension searches, housing calculations for various sealing applications, and supports multiple international standards in both metric and imperial units.

**Highlights:** Offline standard rubber seal size selection, Search for O-Ring, X-Ring, and Back-Up Ring sizes, O-Ring housing calculations for sealing applications, Supports multiple international standards (AS568, METRIC, JIS, etc.), Metric and Imperial unit support, Substitutable O-Ring size suggestions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Torque Tightening free?

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

### Is O free?

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

### Which has better reviews, Torque Tightening or O?

O is rated higher. Torque Tightening averages 2.0 out of 5 from 1 ratings, while O averages 5.0 from 1 ratings.

### Do Torque Tightening or O have ads?

Neither Torque Tightening nor O shows ads.

### Which is updated more often, Torque Tightening or O?

Torque Tightening ships an update every 9 months, and O every 11 months. Most recently, Torque Tightening was updated on September 15, 2026 and O on September 22, 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.*