# App4SHM vs VibraScope

The clearest difference is in-app purchases: App4SHM at none against VibraScope's 1. App4SHM also leads on ads (none vs shown). VibraScope's advantage is update cadence (fortnightly vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. VibraScope sells 1 one-off in-app purchase. App4SHM asks for nothing beyond the download.

App4SHM ships an update every 4 months, VibraScope fortnightly. The most recent releases landed on November 3, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | App4SHM | VibraScope |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 27 MB | 90 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [COFAC](https://appshunter.io/developer/962813435) | [SEONYONG LEE](https://appshunter.io/developer/6775892940) |

## What reviewers say

### App4SHM

[App page](https://appshunter.io/ios/app/app4shm/id6453887192)

**In-app purchases:** none


### VibraScope

[App page](https://appshunter.io/ios/app/vibrascope-vibration-meter/id6792025203)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is App4SHM free?

App4SHM is free to download, with no in-app purchases.

### Is VibraScope free?

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

### Do App4SHM or VibraScope have ads?

VibraScope shows ads; App4SHM does not.

### Which is updated more often, App4SHM or VibraScope?

App4SHM ships an update every 4 months, and VibraScope fortnightly. Most recently, App4SHM was updated on November 3, 2026 and VibraScope on October 29, 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.*