# Vibroscope vs Preppi Offline

The clearest difference is price: Vibroscope at $7.99 against Preppi Offline's $19.99. Preppi Offline's advantage is update cadence (every 2 days vs every 8 months) and iOS requirement (16.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Vibroscope costs $7.99 and Preppi Offline $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Vibroscope ships an update every 8 months, Preppi Offline every 2 days. The most recent releases landed on September 18, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Vibroscope | Preppi Offline |
| --- | --- | --- |
| Price | **$7.99** | $19.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/vibroscope/id1034169622/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 1 MB | 39 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [Jo Jorgen Stordal](https://appshunter.io/developer/1137762557) |

## What reviewers say

### Vibroscope

[App page](https://appshunter.io/ios/app/vibroscope/id1034169622)

This tool uses your device's accelerometer to analyze vibrations in real-time, even those inaudible to humans. It visualizes acceleration data and offers FFT analysis for frequency components, with options to log measurements.

**Highlights:** Real-time vibration measurement, Inaudible vibration detection, Two-axial coordinate display, Time-axis waveform display, FFT analyzer for frequency components, Data logging to text files, Snapshot of measurement screen

**In-app purchases:** none


### Preppi Offline

[App page](https://appshunter.io/ios/app/preppi-offline/id6759899964)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vibroscope free?

Vibroscope costs $7.99, with no in-app purchases.

### Is Preppi Offline free?

Preppi Offline costs $19.99, with no in-app purchases.

### Do Vibroscope or Preppi Offline have ads?

Neither Vibroscope nor Preppi Offline shows ads.

### Which is updated more often, Vibroscope or Preppi Offline?

Vibroscope ships an update every 8 months, and Preppi Offline every 2 days. Most recently, Vibroscope was updated on September 18, 2026 and Preppi Offline on September 7, 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.*