# Vibration Meter, seismograph vs myMacDon

The clearest difference is in-app purchases: myMacDon at none against Vibration Meter, seismograph's 1. myMacDon also leads on update cadence (every 3 months vs every 7 months). Vibration Meter, seismograph's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.6). On price and ads there is nothing between them.

Both are free to download. Vibration Meter, seismograph sells 1 one-off in-app purchase. myMacDon asks for nothing beyond the download.

Vibration Meter, seismograph ships an update every 7 months, myMacDon every 3 months. The most recent releases landed on October 26, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Vibration Meter, seismograph | myMacDon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (729 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews)** | — |
| Number of ratings | **729** | — |
| Positive reviews | 41.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 49 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [ExaMobile S.A.](https://appshunter.io/developer/506014841) | [MacDon Industries Ltd.](https://appshunter.io/developer/1776685721) |

## 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 |


### myMacDon

[App page](https://appshunter.io/ios/app/mymacdon/id6737488267)

**In-app purchases:** none


## Frequently asked questions

### Is Vibration Meter, seismograph free?

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

### Is myMacDon free?

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

### Do Vibration Meter, seismograph or myMacDon have ads?

Neither Vibration Meter, seismograph nor myMacDon shows ads.

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

Vibration Meter, seismograph ships an update every 7 months, and myMacDon every 3 months. Most recently, Vibration Meter, seismograph was updated on October 26, 2026 and myMacDon on October 11, 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.*