# iSeismometer vs Stereonet Mobile

The clearest difference is rating: Stereonet Mobile at 4.5 against iSeismometer's 3.6. Stereonet Mobile also leads on update cadence (monthly vs every 7 months). iSeismometer's advantage is ratings volume (172 vs 13). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

Stereonet Mobile holds the better App Store score, 4.5 against 3.6. That said, the two scores are not equally well evidenced: iSeismometer has 172 ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 76% of iSeismometer's written reviews are positive against 73% of Stereonet Mobile's, so the app with the better star average is not the one people write more warmly about.

iSeismometer ships an update every 7 months, Stereonet Mobile monthly. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | iSeismometer | Stereonet Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (172 ratings)](https://appshunter.io/ios/app/iseismometer/id304190739/reviews) | **[4.5 (13 ratings)](https://appshunter.io/ios/app/stereonet-mobile/id1194772610/reviews)** |
| Number of ratings | **172** | 13 |
| Positive reviews | **76.5% of reviews** | 72.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | Free | Free |
| Size | 3 MB | 29 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ObjectGraph LLC](https://appshunter.io/developer/284700705) | [Richard Allmendinger](https://appshunter.io/developer/1194772609) |

## 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


### Stereonet Mobile

[App page](https://appshunter.io/ios/app/stereonet-mobile/id1194772610)

This app assists geologists in collecting, visualizing, and analyzing geological orientation data. It offers automatic data entry using device sensors and augmented reality, manual input options, and various plotting and calculation tools for geological features.

**Highlights:** Automatic data entry via device orientation, Augmented reality for strike and dip measurement, Manual data entry via stereonet or text fields, Plotting of lines and planes with user-defined types, Basic geological calculations (rotations, angles, slope stability), Plotting of mean vectors, rose diagrams, and contour lines, View plots from any orientation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iSeismometer free?

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

### Is Stereonet Mobile free?

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

### Which has better reviews, iSeismometer or Stereonet Mobile?

Stereonet Mobile is rated higher. iSeismometer averages 3.6 out of 5 from 172 ratings, while Stereonet Mobile averages 4.5 from 13 ratings.

### Do iSeismometer or Stereonet Mobile have ads?

Neither iSeismometer nor Stereonet Mobile shows ads.

### Which is updated more often, iSeismometer or Stereonet Mobile?

iSeismometer ships an update every 7 months, and Stereonet Mobile monthly. Most recently, iSeismometer was updated on October 31, 2026 and Stereonet Mobile on November 2, 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.*