# Hamm Seismograph vs Smart Vibration Meter・Detector

The clearest difference is in-app purchases: Hamm Seismograph at none against Smart Vibration Meter・Detector's 17. Hamm Seismograph also leads on ads (none vs shown) and review sentiment (75% vs 60%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Smart Vibration Meter・Detector sells 17 in-app purchases, starting at $0.99 per 7 days. Hamm Seismograph asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.1 for Hamm Seismograph against 4.1 for Smart Vibration Meter・Detector. Both are backed by a comparable volume of ratings — 17 and 27 respectively. Written reviews are what separate them: 75% of Hamm Seismograph's written reviews are positive against 60% of Smart Vibration Meter・Detector's.

Hamm Seismograph ships an update every 14 months, Smart Vibration Meter・Detector every 8 months. The most recent releases landed on September 9, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | Hamm Seismograph | Smart Vibration Meter・Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (17 ratings)](https://appshunter.io/ios/app/hamm-seismograph/id704450894/reviews) | [4.1 (27 ratings)](https://appshunter.io/ios/app/smart-vibration-meterdetector/id1121590218/reviews) |
| Number of ratings | 17 | **27** |
| Positive reviews | **75.0% of reviews** | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 8 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 79 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [i-NOVATiON GmbH](https://appshunter.io/developer/295851560) | [ZipoApps](https://appshunter.io/developer/1671444635) |

## 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


### Smart Vibration Meter・Detector

[App page](https://appshunter.io/ios/app/smart-vibration-meterdetector/id1121590218)

This utility app transforms your phone into a seismograph to measure vibrations and detect earthquakes. It displays readings on both the Richter and Mercalli scales, offering insights into seismic activity.

**Highlights:** Measures vibration using phone sensors, Displays readings on Richter scale, Displays readings on Mercalli intensity scale, Acts as a seismic detector, Calibration feature for accuracy, Classifies seismic activity effects

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

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $0.99 | per 7 days |
| Unlimited access | $1.99 | per 7 days |
| Unlimited access | $2.99 | per 7 days |
| Unlimited access | $3.99 | per 7 days |
| Unlock premuium features | $4.99 | per 7 days |
| Unlock premuium features | $5.99 | per 7 days |
| Unlock premuium features | $6.99 | per 7 days |
| Unlock premuium features | $7.99 | per 7 days |
| Unlock premuium features | $8.99 | per 7 days |
| Unlock premuium features | $9.99 | per year |
| Unlimited access | $19.99 | per year |
| Unlock premuium features | $19.99 | per month |
| Unlimited access | $29.99 | per year |
| Unlock premuium features | $29.99 | per month |
| Unlimited access | $39.99 | per year |
| Unlimited access | $49.99 | per year |
| Ads-Free | $0.99 | one-time |


## Frequently asked questions

### Is Hamm Seismograph free?

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

### Is Smart Vibration Meter・Detector free?

Smart Vibration Meter・Detector is free to download, with in-app purchases available.

### Which has better reviews, Hamm Seismograph or Smart Vibration Meter・Detector?

Hamm Seismograph and Smart Vibration Meter・Detector are both rated 4.1 out of 5 on the App Store, from 17 and 27 ratings respectively.

### Do Hamm Seismograph or Smart Vibration Meter・Detector have ads?

Smart Vibration Meter・Detector shows ads; Hamm Seismograph does not.

### Which is updated more often, Hamm Seismograph or Smart Vibration Meter・Detector?

Hamm Seismograph ships an update every 14 months, and Smart Vibration Meter・Detector every 8 months. Most recently, Hamm Seismograph was updated on September 9, 2026 and Smart Vibration Meter・Detector on August 12, 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.*