# SKF Shaft alignment vs Video tachometer

The clearest difference is rating: Video tachometer at 4.6 against SKF Shaft alignment's 3.7. Video tachometer also leads on ratings volume (84 vs 10). SKF Shaft alignment's advantage is in-app purchases (none vs 1) and review sentiment (100% vs 85%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Video tachometer sells 1 one-off in-app purchase. SKF Shaft alignment asks for nothing beyond the download.

Video tachometer holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Video tachometer has 84 ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 100% of SKF Shaft alignment's written reviews are positive against 85% of Video tachometer's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SKF Shaft alignment | Video tachometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (10 ratings)](https://appshunter.io/ios/app/skf-shaft-alignment/id990162436/reviews) | **[4.6 (84 ratings)](https://appshunter.io/ios/app/video-tachometer/id1492583587/reviews)** |
| Number of ratings | 10 | **84** |
| Positive reviews | **100.0% of reviews** | 84.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 72 MB | 5 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SKF](https://appshunter.io/developer/472922971) | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) |

## What reviewers say

### SKF Shaft alignment

[App page](https://appshunter.io/ios/app/skf-shaft-alignment/id990162436)

This utility app, when paired with specific hardware, enables precise and intuitive shaft alignment for rotating machinery. It offers a demonstration mode for experiencing the full process without the hardware and generates automatic, shareable reports.

**Highlights:** Intuitive shaft alignment with hardware, Flexible three-position measurement, Demonstration mode for full experience, Automatic, customizable alignment reports, Explanatory setup and measurement videos, 3D animations for guidance, Machine library with QR code scanner

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

**In-app purchases:** none


### Video tachometer

[App page](https://appshunter.io/ios/app/video-tachometer/id1492583587)

This app uses slow-motion video to create a strobe light effect, allowing you to measure rotational speeds. It records video with detailed information like frame rate and exposure, and offers customizable text overlays.

**Highlights:** Strobe light effect simulation, Rotational speed measurement (RPM/Hz), Slow-motion video recording, Customizable text overlays on video, Adjustable frame rate and exposure, Records 4K video (if supported)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 💡 Clever approach
- 🚀 Works beautifully
- 👍 Very handy
- 👍 Accurate measurements

**What reviewers complain about**

- 💸 Too much in paid version
- 💰 Free version limited
- 🤔 Confusing settings initially
- 👎 Unclear about recording
- 👎 No built-in video recording

**Reported bugs**

- Does not read anything
- Pop-ups for paid features
- Interface visible in screen recording

**Requested features**

- Ability to record video
- Slow phase shift mode
- Improved UI for initial setup
- Long press for gradual increment/decrement


## Frequently asked questions

### Is SKF Shaft alignment free?

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

### Is Video tachometer free?

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

### Which has better reviews, SKF Shaft alignment or Video tachometer?

Video tachometer is rated higher. SKF Shaft alignment averages 3.7 out of 5 from 10 ratings, while Video tachometer averages 4.6 from 84 ratings.

### Do SKF Shaft alignment or Video tachometer have ads?

Neither SKF Shaft alignment nor Video tachometer shows ads.

### Which is updated more often, SKF Shaft alignment or Video tachometer?

SKF Shaft alignment ships an update every 3 months, and Video tachometer every 3 months. Most recently, SKF Shaft alignment was updated on November 1, 2026 and Video tachometer on November 3, 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.*