# SKF Machine train alignment vs OneProd Bearing Defender

The clearest difference is iOS requirement: OneProd Bearing Defender at 12.0 against SKF Machine train alignment's 15.0. 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.

SKF Machine train alignment ships an update every 3 months, OneProd Bearing Defender every 4 months. The most recent releases landed on October 28, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | SKF Machine train alignment | OneProd Bearing Defender |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/oneprod-bearing-defender/id1273965192/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | — | Free |
| Size | 69 MB | 74 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SKF](https://appshunter.io/developer/472922971) | [ACOEM Group](https://appshunter.io/developer/1495816959) |

## What reviewers say

### SKF Machine train alignment

[App page](https://appshunter.io/ios/app/skf-machine-train-alignment/id1149906003)

**Features:** macOS Compatibility

**In-app purchases:** none


### OneProd Bearing Defender

[App page](https://appshunter.io/ios/app/oneprod-bearing-defender/id1273965192)

This app simplifies complex vibration analysis for industrial assets. It automatically diagnoses bearing health, detects faults like unbalance and misalignment, and presents results clearly with color-coded indicators, making predictive maintenance accessible without expert knowledge.

**Highlights:** Bearing fault frequency calculation, Triaxial vibration measurements, Automatic ISO10816-3 standard comparison, Automated diagnostic indicators, Live audio signal listening, 3D spectrum display, Reporting via screenshots

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SKF Machine train alignment free?

SKF Machine train alignment is free to download, with no in-app purchases.

### Is OneProd Bearing Defender free?

OneProd Bearing Defender is free to download, with no in-app purchases.

### Do SKF Machine train alignment or OneProd Bearing Defender have ads?

Neither SKF Machine train alignment nor OneProd Bearing Defender shows ads.

### Which is updated more often, SKF Machine train alignment or OneProd Bearing Defender?

SKF Machine train alignment ships an update every 3 months, and OneProd Bearing Defender every 4 months. Most recently, SKF Machine train alignment was updated on October 28, 2026 and OneProd Bearing Defender on September 28, 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.*