# Vibration Meter, seismograph vs Video tachometer

Vibration Meter, seismograph and Video tachometer both sit at 4.7 stars, but that hides the real split: 85% of Video tachometer's written reviews are positive against 42% of Vibration Meter, seismograph's. Video tachometer also leads on update cadence (every 3 months vs every 7 months). Vibration Meter, seismograph's advantage is ratings volume (730 vs 84) and iOS requirement (12.0 vs 15.6). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Vibration Meter, seismograph sells 1 one-off in-app purchase and Video tachometer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Vibration Meter, seismograph against 4.6 for Video tachometer. That said, the two scores are not equally well evidenced: Vibration Meter, seismograph has 730 ratings behind it against 84, so its average is the more settled of the two. Written reviews are what separate them: 42% of Vibration Meter, seismograph's written reviews are positive against 85% of Video tachometer's.

Vibration Meter, seismograph ships an update every 7 months, Video tachometer every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Vibration Meter, seismograph | Video tachometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (730 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews)** | [4.6 (84 ratings)](https://appshunter.io/ios/app/video-tachometer/id1492583587/reviews) |
| Number of ratings | **730** | 84 |
| Positive reviews | 42.5% of reviews | **84.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 18 MB | 5 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ExaMobile S.A.](https://appshunter.io/developer/506014841) | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) |

## What reviewers say

### Vibration Meter, seismograph

[App page](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201)

This application uses your phone's accelerometer to measure and record vibrations from various sources, including earthquakes and everyday objects. It displays ground motion on a graph and uses an instrumental intensity scale for analysis. You can also monitor and share your measurement results.

**Highlights:** Measures vibration strength, Detects seismic waves, Uses accelerometer for analysis, Displays ground motion graph, Utilizes instrumental intensity scale, Monitors and shares results

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### 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 Vibration Meter, seismograph free?

Vibration Meter, seismograph is free to download, with in-app purchases available.

### Is Video tachometer free?

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

### Which has better reviews, Vibration Meter, seismograph or Video tachometer?

Vibration Meter, seismograph is rated higher. Vibration Meter, seismograph averages 4.7 out of 5 from 730 ratings, while Video tachometer averages 4.6 from 84 ratings.

### Do Vibration Meter, seismograph or Video tachometer have ads?

Neither Vibration Meter, seismograph nor Video tachometer shows ads.

### Which is updated more often, Vibration Meter, seismograph or Video tachometer?

Vibration Meter, seismograph ships an update every 7 months, and Video tachometer every 3 months. Most recently, Vibration Meter, seismograph was updated on November 2, 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.*