# Vibration meter vs VAS

The clearest difference is review sentiment: VAS at 100% against Vibration meter's 33%. VAS also leads on in-app purchases (none vs 2) and ads (none vs shown). Vibration meter's advantage is rating (4.4 vs 3.5) and ratings volume (14 vs 2). 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. VAS asks for nothing beyond the download.

Vibration meter holds the better App Store score, 4.4 against 3.5. That said, the two scores are not equally well evidenced: Vibration meter has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 33% of Vibration meter's written reviews are positive against 100% of VAS's, so the app with the better star average is not the one people write more warmly about.

Vibration meter ships an update monthly, VAS fortnightly. The most recent releases landed on September 22, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | Vibration meter | VAS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (14 ratings)](https://appshunter.io/ios/app/vibration-meter-seismometer/id1373632255/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/vas/id1577315840/reviews) |
| Number of ratings | **14** | 2 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 51 MB | 83 MB |
| Requires iOS | 16.0 | **12.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MYSTIC MOBILE APPS LLC](https://appshunter.io/developer/1481942662) | [Mentes Digitales S.A.](https://appshunter.io/developer/824793250) |

## 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 |


### VAS

[App page](https://appshunter.io/ios/app/vas/id1577315840)

Manage your VAS+ prepaid account for toll roads. This app allows for easy top-ups, account creation, and management, offering faster passage through toll booths and special rates for frequent users.

**Highlights:** Prepaid account management, Easy top-ups, Account creation, Faster toll booth passage, Special rates for frequent users

**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 VAS free?

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

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

Vibration meter is rated higher. Vibration meter averages 4.4 out of 5 from 14 ratings, while VAS averages 3.5 from 2 ratings.

### Do Vibration meter or VAS have ads?

Vibration meter shows ads; VAS does not.

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

Vibration meter ships an update monthly, and VAS fortnightly. Most recently, Vibration meter was updated on September 22, 2026 and VAS on June 2, 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.*