# iSeismometer vs AR Volt Meter

The clearest difference is iOS requirement: AR Volt Meter at 12.0 against iSeismometer's 16.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | iSeismometer | AR Volt Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (170 ratings)](https://appshunter.io/ios/app/iseismometer/id304190739/reviews)** | — |
| Number of ratings | **170** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Free | — |
| Size | 3 MB | 77 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ObjectGraph LLC](https://appshunter.io/developer/284700705) | [ATSUSHI INAGAKI](https://appshunter.io/developer/1670043302) |

## What reviewers say

### iSeismometer

[App page](https://appshunter.io/ios/app/iseismometer/id304190739)

Transform your iPhone into a sensitive seismometer to detect and visualize vibrations. Explore its educational and data-collecting capabilities for fun or serious applications.

**Highlights:** Converts iPhone to seismometer, Detects and visualizes vibrations, Data collecting capabilities, Educational use, Adjustable frequency settings, Re-track previous data, X-Y-Z illustrated graphs

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Sensitive and accurate
- 👍 Simple and easy to use
- 💡 Useful for various applications (e.g. monitoring vibrations, detecting heartbeat)

**What reviewers complain about**

- 🐛 Crashes or freezes on newer devices
- 🔋 High battery consumption
- 🔒 Lacks security/privacy features (e.g. no option to disable data transmission)

**Reported bugs**

- Buttons/controls not working on newer iOS versions
- Keyboard not appearing in text input fields
- Inconsistent performance across device models

**Requested features**

- Add sensitivity control
- Implement zero control for reference plane
- Increase recording time
- Improve UI/UX (e.g. color coding, scrolling, chart speed control)
- Implement Richter scale or other measurement units


### AR Volt Meter

[App page](https://appshunter.io/ios/app/ar-volt-meter/id1670043300)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iSeismometer free?

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

### Is AR Volt Meter free?

AR Volt Meter is free to download, with no in-app purchases.

### Do iSeismometer or AR Volt Meter have ads?

Neither iSeismometer nor AR Volt Meter shows ads.

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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.*