# iSeismometer vs Earthlapse

The clearest difference is rating: Earthlapse at 4.1 against iSeismometer's 3.6. iSeismometer's advantage is ratings volume (172 vs 25) and iOS requirement (16.0 vs 26.0). On price, review sentiment, update cadence and ads there is nothing between them.

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

Earthlapse holds the better App Store score, 4.1 against 3.6. That said, the two scores are not equally well evidenced: iSeismometer has 172 ratings behind it against 25, so its average is the more settled of the two. Written reviews complicate that: 76% of iSeismometer's written reviews are positive against 71% of Earthlapse'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, Earthlapse every 12 months. Both last shipped on November 10, 2026.

## The numbers

| Metric | iSeismometer | Earthlapse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (172 ratings)](https://appshunter.io/ios/app/iseismometer-seismograph/id304190739/reviews) | **[4.1 (25 ratings)](https://appshunter.io/ios/app/earthlapse/id522003167/reviews)** |
| Number of ratings | **172** | 25 |
| Positive reviews | **76.5% of reviews** | 70.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 12 months |
| Monetization | Free | Free |
| Size | 3 MB | 130 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ObjectGraph LLC](https://appshunter.io/developer/284700705) | [Jetson Creative LLC](https://appshunter.io/developer/295445438) |

## What reviewers say

### iSeismometer

[App page](https://appshunter.io/ios/app/iseismometer-seismograph/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, iPhone Duo 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


### Earthlapse

[App page](https://appshunter.io/ios/app/earthlapse/id522003167)

Transform your device into a window to Earth from the International Space Station. Explore stunning NASA imagery, track the ISS live, and enjoy ambient space music. This app offers a unique, interactive, and relaxing view of our planet.

**Highlights:** Interactive Earth views from ISS, Live ISS tracker, NASA live feed from Space Station, Ambient space soundtracks, Worldwide weather display, Supports iPhone and iPad

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

**In-app purchases:** none

**What reviewers like**

- 🌍 Stunning visual quality and beautiful Earth views from space
- 🎵 Excellent ambient space music that enhances experience
- 😌 Calming and relaxing atmosphere for stress relief
- 📺 Works well with AirPlay and TV display
- 🎨 Elegant design and well-coded interface

**What reviewers complain about**

- 💾 Massive file size (500-609MB) consumes excessive storage
- 🐢 Very slow download times
- 🔄 Limited content with repetitive looping videos
- 📹 Low image quality and blurriness on some devices
- ❌ No real-time live feed from space station

**Reported bugs**

- Weather forecast showing blank space
- App not working properly on iPad and iPhone
- Live view feature not functioning
- Blurred image quality on Apple TV
- Frame rate issues causing poor performance

**Requested features**

- Add more video content and scenes
- Implement real-time or live streaming from ISS
- Reduce file size through better compression
- Add Chromecast support
- Allow custom music selection


## Frequently asked questions

### Is iSeismometer free?

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

### Is Earthlapse free?

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

### Which has better reviews, iSeismometer or Earthlapse?

Earthlapse is rated higher. iSeismometer averages 3.6 out of 5 from 172 ratings, while Earthlapse averages 4.1 from 25 ratings.

### Do iSeismometer or Earthlapse have ads?

Neither iSeismometer nor Earthlapse shows ads.

### Which is updated more often, iSeismometer or Earthlapse?

iSeismometer ships an update every 7 months, and Earthlapse every 12 months. Most recently, iSeismometer was updated on November 10, 2026 and Earthlapse on November 10, 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.*