# iSeismometer vs The Earth by Tinybop

The clearest difference is price: iSeismometer at Free against The Earth by Tinybop's $3.99. iSeismometer also leads on review sentiment (76% vs 45%). The Earth by Tinybop's advantage is rating (4.3 vs 3.6) and update cadence (every 3 months vs every 7 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

iSeismometer is free to download; The Earth by Tinybop costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

The Earth by Tinybop holds the better App Store score, 4.3 against 3.6. Both are backed by a comparable volume of ratings — 170 and 81 respectively. Written reviews complicate that: 76% of iSeismometer's written reviews are positive against 45% of The Earth by Tinybop'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, The Earth by Tinybop every 3 months. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | iSeismometer | The Earth by Tinybop |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [3.6 (170 ratings)](https://appshunter.io/ios/app/iseismometer/id304190739/reviews) | **[4.3 (81 ratings)](https://appshunter.io/ios/app/the-earth-by-tinybop/id1001247878/reviews)** |
| Number of ratings | **170** | 81 |
| Positive reviews | **76.4% of reviews** | 45.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 400 MB |
| Requires iOS | 16.0 | **9.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ObjectGraph LLC](https://appshunter.io/developer/284700705) | [Tinybop Inc.](https://appshunter.io/developer/682046582) |

## 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


### The Earth by Tinybop

[App page](https://appshunter.io/ios/app/the-earth-by-tinybop/id1001247878)

Explore geology and ecology with an interactive Earth model. Kids can simulate geological forces, witness landform creation, and learn about conservation through hands-on activities. Develop foundational science literacy through engaging STEM exploration.

**Highlights:** Interactive Earth model, Simulate geological forces, Explore Earth's layers, Shape landforms, Learn conservation, Discover fossils, Experiment with volcanoes

**Features:** macOS Compatibility, Game Controller support

**In-app purchases:** none

**What reviewers like**

- 🎨 Beautiful, detailed graphics and art style
- 🧠 Educational content about Earth's geology and natural processes
- 🎮 Interactive exploration mechanics with engaging animations
- 🌍 Comprehensive coverage of Earth science topics (volcanoes, earthquakes, layers, etc.)
- 👨‍👩‍👧‍👦 Appeals to wide age range from young children to teenagers

**What reviewers complain about**

- ❓ Lacks clear instructions and tutorials for navigation
- ⏱️ Limited content with quick completion time (5-30 minutes)
- 🐛 Frequent crashes and freezing issues
- 😕 Not intuitive for users to understand what to do
- 🎯 No clear objectives or goals provided

**Reported bugs**

- App crashes frequently on various iOS devices
- Screen freezes and becomes unresponsive
- Phone crashes to Apple logo on some devices
- Blank white screen on launch
- Incompatibility with iPhone 4 and older iOS versions

**Requested features**

- Tutorial or guided learning instructions for new users
- Ability to explore Earth's timeline and early stages properly
- Space exploration feature to complement Earth exploration
- More interactive structures and objects to manipulate
- Mariana Trench addition with marine life details


## Frequently asked questions

### Is iSeismometer free?

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

### Is The Earth by Tinybop free?

The Earth by Tinybop costs $3.99, with no in-app purchases.

### Which has better reviews, iSeismometer or The Earth by Tinybop?

The Earth by Tinybop is rated higher. iSeismometer averages 3.6 out of 5 from 170 ratings, while The Earth by Tinybop averages 4.3 from 81 ratings.

### Do iSeismometer or The Earth by Tinybop have ads?

Neither iSeismometer nor The Earth by Tinybop shows ads.

### Which is updated more often, iSeismometer or The Earth by Tinybop?

iSeismometer ships an update every 7 months, and The Earth by Tinybop every 3 months. Most recently, iSeismometer was updated on September 17, 2026 and The Earth by Tinybop on September 24, 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.*