# iTemblor Earthquake Simulator vs iSeismometer

The clearest difference is rating: iTemblor Earthquake Simulator at 5.0 against iSeismometer's 3.6. iTemblor Earthquake Simulator also leads on review sentiment (100% vs 76%). iSeismometer's advantage is ratings volume (172 vs 1) and device support (3 vs 1). On price, update cadence, 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.

iTemblor Earthquake Simulator holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: iSeismometer has 172 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of iTemblor Earthquake Simulator's written reviews are positive against 76% of iSeismometer's.

iTemblor Earthquake Simulator ships an update every 11 months, iSeismometer every 7 months. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | iTemblor Earthquake Simulator | iSeismometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/itemblor-earthquake-simulator/id297751959/reviews)** | [3.6 (172 ratings)](https://appshunter.io/ios/app/iseismometer/id304190739/reviews) |
| Number of ratings | 1 | **172** |
| Positive reviews | **100.0% of reviews** | 76.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 7 months** |
| Monetization | Free | Free |
| Size | 1 MB | 3 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jess Taylor](https://appshunter.io/developer/417821730) | [ObjectGraph LLC](https://appshunter.io/developer/284700705) |

## What reviewers say

### iTemblor Earthquake Simulator

[App page](https://appshunter.io/ios/app/itemblor-earthquake-simulator/id297751959)

Explore earthquake shaking intensity by relating the acceleration you impart on your phone to the Modified Mercalli Intensity (MMI) scale. Visualize shaking in 2D or 3D seismograms, with options to filter data for realistic earthquake simulations. Primarily for educational and entertainment purposes.

**Highlights:** MMI scale simulation, Seismoscope view (2D), Time Series view (3D seismogram), Gravity removal, Low-pass filtering, Educational and entertainment focus

**In-app purchases:** none


### 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


## Frequently asked questions

### Is iTemblor Earthquake Simulator free?

iTemblor Earthquake Simulator is free to download, with no in-app purchases.

### Is iSeismometer free?

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

### Which has better reviews, iTemblor Earthquake Simulator or iSeismometer?

iTemblor Earthquake Simulator is rated higher. iTemblor Earthquake Simulator averages 5.0 out of 5 from 1 ratings, while iSeismometer averages 3.6 from 172 ratings.

### Do iTemblor Earthquake Simulator or iSeismometer have ads?

Neither iTemblor Earthquake Simulator nor iSeismometer shows ads.

### Which is updated more often, iTemblor Earthquake Simulator or iSeismometer?

iTemblor Earthquake Simulator ships an update every 11 months, and iSeismometer every 7 months. Most recently, iTemblor Earthquake Simulator was updated on November 6, 2026 and iSeismometer on October 31, 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.*