# Vibration meter vs ICSI

The clearest difference is rating: ICSI at 5.0 against Vibration meter's 4.4. ICSI also leads on in-app purchases (none vs 2) and ads (none vs shown). Vibration meter's advantage is ratings volume (14 vs 1). On price, update cadence and device support there is nothing between them.

Both are free to download. Vibration meter sells 2 in-app purchases, starting at $0.99 per month. ICSI asks for nothing beyond the download.

ICSI holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Vibration meter has 14 ratings behind it against 1, so its average is the more settled of the two.

Vibration meter ships an update monthly, ICSI every 6 weeks. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Vibration meter | ICSI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (14 ratings)](https://appshunter.io/ios/app/vibration-meter-seismometer/id1373632255/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/icsi-upsa/id6443956371/reviews)** |
| Number of ratings | **14** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 51 MB | 33 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [MYSTIC MOBILE APPS LLC](https://appshunter.io/developer/1481942662) | [FUNDACION UPSA](https://appshunter.io/developer/641801487) |

## What reviewers say

### Vibration meter

[App page](https://appshunter.io/ios/app/vibration-meter-seismometer/id1373632255)

Measure the strength of vibrations, tremors, and earthquakes using your phone's built-in seismograph. Visualize seismic movements on graphs, receive real-time Mercalli scale readings, and get instant alerts for seismic shocks. Data can be saved and shared for analysis.

**Highlights:** High-accuracy seismometer, Seismic wave detection, Detailed graphical analysis, Real-time Mercalli scale readings, Instant alerts for seismic shocks, Effortless data autosave, Apple Watch compatibility

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Vibration meter+ | $0.99 | per month |
| Annual Vibration meter+ | $5.99 | per year |


### ICSI

[App page](https://appshunter.io/ios/app/icsi-upsa/id6443956371)

Monitor seismic events across Bolivia. View recent earthquakes on a map and report perceived tremors. Your input helps strengthen seismic studies and improve national response strategies.

**Highlights:** Monitor seismic events, View recent earthquakes, Map earthquake locations, Report perceived tremors, Strengthen seismic studies, Improve response strategies

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vibration meter free?

Vibration meter is free to download, with in-app purchases available.

### Is ICSI free?

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

### Which has better reviews, Vibration meter or ICSI?

ICSI is rated higher. Vibration meter averages 4.4 out of 5 from 14 ratings, while ICSI averages 5.0 from 1 ratings.

### Do Vibration meter or ICSI have ads?

Vibration meter shows ads; ICSI does not.

### Which is updated more often, Vibration meter or ICSI?

Vibration meter ships an update monthly, and ICSI every 6 weeks. Most recently, Vibration meter was updated on October 19, 2026 and ICSI on October 12, 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.*