# Pocket Seismograph vs SpecWave

The clearest difference is update cadence: SpecWave at every 6 days against Pocket Seismograph's every 3 months. Pocket Seismograph's advantage is iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pocket Seismograph ships an update every 3 months, SpecWave every 6 days. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Pocket Seismograph | SpecWave |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Size | 23 MB | 8 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [lapnito.cz s.r.o.](https://appshunter.io/developer/1577358577) | [晓玮 郭](https://appshunter.io/developer/1896738896) |

## What reviewers say

### Pocket Seismograph

[App page](https://appshunter.io/ios/app/pocket-seismograph-vibration/id6766446046)

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

**In-app purchases:** none


### SpecWave

[App page](https://appshunter.io/ios/app/specwave/id6808551669)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pocket Seismograph free?

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

### Is SpecWave free?

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

### Do Pocket Seismograph or SpecWave have ads?

Neither Pocket Seismograph nor SpecWave shows ads.

### Which is updated more often, Pocket Seismograph or SpecWave?

Pocket Seismograph ships an update every 3 months, and SpecWave every 6 days. Most recently, Pocket Seismograph was updated on October 25, 2026 and SpecWave on October 21, 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.*