# Seismometer vs Shortwave Guide

The clearest difference is review sentiment: Seismometer at 65% against Shortwave Guide's 20%. Seismometer also leads on price ($1.99 vs $8.99) and iOS requirement (8.0 vs 15.6). Shortwave Guide's advantage is update cadence (every 2 months vs every 13 months). On ads, in-app purchases and device support there is nothing between them.

Seismometer costs $1.99 and Shortwave Guide $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Seismometer ships an update every 13 months, Shortwave Guide every 2 months. The most recent releases landed on September 30, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Seismometer | Shortwave Guide |
| --- | --- | --- |
| Price | **$1.99** | $8.99 |
| Rating | **[3.3 (17 ratings)](https://appshunter.io/ios/app/seismometer/id288966259/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | **64.7% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 26 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FFFF00 Agents AB](https://appshunter.io/developer/288966262) | [Vladyslav Haliuk](https://appshunter.io/developer/1563954274) |

## What reviewers say

### Seismometer

[App page](https://appshunter.io/ios/app/seismometer/id288966259)

This app uses your device's accelerometer to detect and measure vibrations, shakes, and movements. It calculates the energy of these movements and displays them on a logarithmic scale, offering various signal filters and recording capabilities.

**Highlights:** Measure vibrations and movements, Uses device accelerometer, Calculates energy of movements, Logarithmic scale display, Signal filters, Recordings and CSV export, UDP Streaming

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Sensitive and accurate
- 👍 Great for demonstrating vibrations
- 👍 Useful for photography and audio
- 👍 Visually appealing
- 👍 Clever use of accelerometer

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Inaccurate readings even on flat surfaces
- 🔋 Drains battery quickly
- 🔒 No security or privacy features
- 👎 Limited functionality and customization

**Reported bugs**

- Crashes when trying to view recordings
- Unresponsive controls
- Incompatible with newer iPhone models
- Screen turns off unexpectedly

**Requested features**

- Pause and scroll back through recordings
- Save and email recorded data
- Adjustable sensitivity settings
- Richter scale or other measurement units
- Ability to record and review vibration history


### Shortwave Guide

[App page](https://appshunter.io/ios/app/shortwave-guide/id1629061921)

This application displays a real-time schedule of shortwave radio broadcasts worldwide, sourced from the EiBi database. Users can rescan for updates, view specific frequencies, and update the entire broadcast schedule database.

**Highlights:** Worldwide shortwave broadcast schedule, Real-time station listings, Frequency viewing, Database updates, EiBi database integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Seismometer free?

Seismometer costs $1.99, with no in-app purchases.

### Is Shortwave Guide free?

Shortwave Guide costs $8.99, with no in-app purchases.

### Do Seismometer or Shortwave Guide have ads?

Neither Seismometer nor Shortwave Guide shows ads.

### Which is updated more often, Seismometer or Shortwave Guide?

Seismometer ships an update every 13 months, and Shortwave Guide every 2 months. Most recently, Seismometer was updated on September 30, 2026 and Shortwave Guide on September 24, 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.*