# Vibration meter vs STAMP.

The clearest difference is review sentiment: STAMP. at 100% against Vibration meter's 33%. STAMP. also leads on in-app purchases (none vs 2) and ads (none vs shown). Vibration meter's advantage is iOS requirement (16.0 vs 18.0). On price 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. STAMP. asks for nothing beyond the download.

Vibration meter ships an update monthly, STAMP. every 4 days. The most recent releases landed on November 13, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Vibration meter | STAMP. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (14 ratings)](https://appshunter.io/ios/app/vibration-meter-seismometer/id1373632255/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 51 MB | 1 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MYSTIC MOBILE APPS LLC](https://appshunter.io/developer/1481942662) | [Richard Shilton](https://appshunter.io/developer/1021935442) |

## 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 |


### STAMP.

[App page](https://appshunter.io/ios/app/stamp/id6759585956)

This app tracks when you perform specific actions, showing the time elapsed since your last entry. It's designed for users who need to monitor intervals without complex scheduling or reminders. Simply tap when you do something to see how long it's been.

**Highlights:** Simple time ledger, Tap to record actions, Instant elapsed time view, History log, No accounts or pressure, Focus on elapsed time

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

**In-app purchases:** none


## Frequently asked questions

### Is Vibration meter free?

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

### Is STAMP. free?

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

### Do Vibration meter or STAMP. have ads?

Vibration meter shows ads; STAMP. does not.

### Which is updated more often, Vibration meter or STAMP.?

Vibration meter ships an update monthly, and STAMP. every 4 days. Most recently, Vibration meter was updated on November 13, 2026 and STAMP. on November 5, 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.*