# SKF Vertical shaft alignment vs CDHM Tester

The clearest difference is update cadence: CDHM Tester at every 5 weeks against SKF Vertical shaft alignment's every 3 months. CDHM Tester also leads on iOS requirement (12.0 vs 16.6). On price, ads, 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.

SKF Vertical shaft alignment ships an update every 3 months, CDHM Tester every 5 weeks. The most recent releases landed on October 21, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | SKF Vertical shaft alignment | CDHM Tester |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 68 MB | 30 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SKF](https://appshunter.io/developer/472922971) | [深圳雷诺智能技术有限公司](https://appshunter.io/developer/1764868485) |

## What reviewers say

### SKF Vertical shaft alignment

[App page](https://appshunter.io/ios/app/skf-vertical-shaft-alignment/id1149886803)

This utility app, when paired with specific hardware, enables intuitive and accurate vertical shaft alignments for rotating machines. It guides users through measurements, provides corrective values, and generates detailed reports. A demonstration mode is available for users without the hardware.

**Highlights:** Intuitive vertical shaft alignment, Quick three-point measurement guidance, Support for various bolt configurations, Demonstration mode for trial, Automatic alignment report generation, Explanatory videos and 3D animations, Machine library with QR code scanner

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

**In-app purchases:** none


### CDHM Tester

[App page](https://appshunter.io/ios/app/cdhm-tester/id6667100044)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SKF Vertical shaft alignment free?

SKF Vertical shaft alignment is free to download, with no in-app purchases.

### Is CDHM Tester free?

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

### Do SKF Vertical shaft alignment or CDHM Tester have ads?

Neither SKF Vertical shaft alignment nor CDHM Tester shows ads.

### Which is updated more often, SKF Vertical shaft alignment or CDHM Tester?

SKF Vertical shaft alignment ships an update every 3 months, and CDHM Tester every 5 weeks. Most recently, SKF Vertical shaft alignment was updated on October 21, 2026 and CDHM Tester on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*