# Voltcraft WIFI Scope vs DR

The clearest difference is in-app purchases: Voltcraft WIFI Scope at none against DR's 1. Voltcraft WIFI Scope also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. DR sells 1 one-off in-app purchase. Voltcraft WIFI Scope asks for nothing beyond the download.

Voltcraft WIFI Scope ships an update every 3 weeks, DR every 2 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Voltcraft WIFI Scope | DR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 26 MB | 60 MB |
| Requires iOS | **9.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CEI Conrad Electronic International (HK) Limited](https://appshunter.io/developer/756357900) | [DR-Online Sp. z o.o.](https://appshunter.io/developer/1743786912) |

## What reviewers say

### Voltcraft WIFI Scope

[App page](https://appshunter.io/ios/app/voltcraft-wifi-scope/id1097236154)

**Features:** macOS Compatibility

**In-app purchases:** none


### DR

[App page](https://appshunter.io/ios/app/dr-soundmeter/id6759615031)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SoundMeter PRO | $1.99 | one-time |


## Frequently asked questions

### Is Voltcraft WIFI Scope free?

Voltcraft WIFI Scope is free to download, with no in-app purchases.

### Is DR free?

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

### Do Voltcraft WIFI Scope or DR have ads?

DR shows ads; Voltcraft WIFI Scope does not.

### Which is updated more often, Voltcraft WIFI Scope or DR?

Voltcraft WIFI Scope ships an update every 3 weeks, and DR every 2 months. Most recently, Voltcraft WIFI Scope was updated on November 2, 2026 and DR on October 31, 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.*