# Hamm Seismograph vs Vibration meter

The clearest difference is review sentiment: Hamm Seismograph at 75% against Vibration meter's 33%. Hamm Seismograph also leads on in-app purchases (none vs 2) and ads (none vs shown). Vibration meter's advantage is update cadence (monthly vs every 14 months) and rating (4.4 vs 4.1). On price, ratings volume and device support there is nothing between them.

Both are free to download. Vibration meter sells 2 in-app purchases, starting at $0.99 per month. Hamm Seismograph asks for nothing beyond the download.

Vibration meter holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 17 and 14 respectively. Written reviews complicate that: 75% of Hamm Seismograph's written reviews are positive against 33% of Vibration meter's, so the app with the better star average is not the one people write more warmly about.

Hamm Seismograph ships an update every 14 months, Vibration meter monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Hamm Seismograph | Vibration meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (17 ratings)](https://appshunter.io/ios/app/hamm-seismograph/id704450894/reviews) | **[4.4 (14 ratings)](https://appshunter.io/ios/app/vibration-meter-seismometer/id1373632255/reviews)** |
| Number of ratings | **17** | 14 |
| Positive reviews | **75.0% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 51 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [i-NOVATiON GmbH](https://appshunter.io/developer/295851560) | [MYSTIC MOBILE APPS LLC](https://appshunter.io/developer/1481942662) |

## What reviewers say

### Hamm Seismograph

[App page](https://appshunter.io/ios/app/hamm-seismograph/id704450894)

This utility app visualizes structure-borne swings caused by construction machinery, helping to identify potentially damaging vibrations. It offers real-time display, adjustable presentation modes, and diagram freezing for clear analysis.

**Highlights:** Real-time swing display, Adjustable presentation modes, Line width selection, Diagram freeze function, Sunlight-readable display, Local data processing

**In-app purchases:** none


### Vibration meter

[App page](https://appshunter.io/ios/app/vibration-meter-seismometer/id1373632255)

Measure the strength of vibrations, tremors, and earthquakes using your phone's built-in seismograph. Visualize seismic movements on graphs, receive real-time Mercalli scale readings, and get instant alerts for seismic shocks. Data can be saved and shared for analysis.

**Highlights:** High-accuracy seismometer, Seismic wave detection, Detailed graphical analysis, Real-time Mercalli scale readings, Instant alerts for seismic shocks, Effortless data autosave, Apple Watch compatibility

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Vibration meter+ | $0.99 | per month |
| Annual Vibration meter+ | $5.99 | per year |


## Frequently asked questions

### Is Hamm Seismograph free?

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

### Is Vibration meter free?

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

### Which has better reviews, Hamm Seismograph or Vibration meter?

Vibration meter is rated higher. Hamm Seismograph averages 4.1 out of 5 from 17 ratings, while Vibration meter averages 4.4 from 14 ratings.

### Do Hamm Seismograph or Vibration meter have ads?

Vibration meter shows ads; Hamm Seismograph does not.

### Which is updated more often, Hamm Seismograph or Vibration meter?

Hamm Seismograph ships an update every 14 months, and Vibration meter monthly. Most recently, Hamm Seismograph was updated on October 23, 2026 and Vibration meter on October 24, 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.*