# Accelerometer ∞ vs Seismometer+

The clearest difference is in-app purchases: Seismometer+ at none against Accelerometer ∞'s 2. Seismometer+ also leads on review sentiment (67% vs 50%) and rating (4.5 vs 4.3). On price, ratings volume and ads there is nothing between them.

Both are free to download. Accelerometer ∞ sells 2 in-app purchases, starting at $1.99 per month. Seismometer+ asks for nothing beyond the download.

Seismometer+ holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 61 and 82 respectively. Written reviews point the same way: 50% of Accelerometer ∞'s written reviews are positive against 67% of Seismometer+'s.

## The numbers

| Metric | Accelerometer ∞ | Seismometer+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (61 ratings)](https://appshunter.io/ios/app/accelerometer/id6621273087/reviews) | **[4.5 (82 ratings)](https://appshunter.io/ios/app/seismometer-plus/id6739265160/reviews)** |
| Number of ratings | 61 | **82** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 16 MB | 3 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fawkes Wei](https://appshunter.io/developer/432767536) | [UniCom Technology](https://appshunter.io/developer/1270764210) |

## What reviewers say

### Accelerometer ∞

[App page](https://appshunter.io/ios/app/accelerometer/id6621273087)

Visualize device motion data in real-time with dynamic graphs. Analyze sensor information, calibrate your device, and explore various possibilities. This utility app offers a unique perspective on your device's movement.

**Highlights:** Real-time motion data visualization, Stunning graph displays, Sensor calibration, Data analysis, Explore endless possibilities

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Lifetime | $9.99 | one-time |


### Seismometer+

[App page](https://appshunter.io/ios/app/seismometer-plus/id6739265160)

Transform your device into a powerful seismometer to measure and visualize vibrations in real time. Track tremors, analyze surface stability, and explore the unseen movements around you with intuitive graphical displays. Perfect for science enthusiasts and the curious.

**Highlights:** Real-time X, Y, Z axis acceleration graphs, Cumulative vibration intensity analysis, Adjustable long-term data recording intervals, Dark mode display, Customizable graph update rates and sensitivity

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

**In-app purchases:** none


## Frequently asked questions

### Is Accelerometer ∞ free?

Accelerometer ∞ is free to download, with in-app purchases available.

### Is Seismometer+ free?

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

### Which has better reviews, Accelerometer ∞ or Seismometer+?

Seismometer+ is rated higher. Accelerometer ∞ averages 4.3 out of 5 from 61 ratings, while Seismometer+ averages 4.5 from 82 ratings.

### Do Accelerometer ∞ or Seismometer+ have ads?

Both Accelerometer ∞ and Seismometer+ show 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.*