# Seismometer ∞ vs MeterWorks Vibrometer

The clearest difference is in-app purchases: Seismometer ∞ at none against MeterWorks Vibrometer's 1. MeterWorks Vibrometer's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. MeterWorks Vibrometer sells 1 one-off in-app purchase. Seismometer ∞ asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 30, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Seismometer ∞ | MeterWorks Vibrometer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 16 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [辰巳家有限公司](https://appshunter.io/developer/1781943256) | [Emil Deak](https://appshunter.io/developer/1883312248) |

## What reviewers say

### Seismometer ∞

[App page](https://appshunter.io/ios/app/seismometer/id6761700650)

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

**In-app purchases:** none


### MeterWorks Vibrometer

[App page](https://appshunter.io/ios/app/meterworks-vibrometer/id6779408803)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MessWerk Pro | $7.99 | one-time |


## Frequently asked questions

### Is Seismometer ∞ free?

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

### Is MeterWorks Vibrometer free?

MeterWorks Vibrometer is free to download, with in-app purchases available.

### Do Seismometer ∞ or MeterWorks Vibrometer have ads?

Seismometer ∞ shows ads; MeterWorks Vibrometer does not.

### Which is updated more often, Seismometer ∞ or MeterWorks Vibrometer?

Seismometer ∞ ships an update every 2 weeks, and MeterWorks Vibrometer every 2 weeks. Most recently, Seismometer ∞ was updated on September 30, 2026 and MeterWorks Vibrometer on October 4, 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.*