# IMPULSE Wireless vs OPSWAT SDP

The clearest difference is update cadence: IMPULSE Wireless at every 2 months against OPSWAT SDP's every 6 months. OPSWAT SDP's advantage is iOS requirement (13.0 vs 16.1). 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.

IMPULSE Wireless ships an update every 2 months, OPSWAT SDP every 6 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | IMPULSE Wireless | OPSWAT SDP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Size | 20 MB | 62 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Invisible Communications](https://appshunter.io/developer/1459581775) | [OPSWAT](https://appshunter.io/developer/987603817) |

## What reviewers say

### IMPULSE Wireless

[App page](https://appshunter.io/ios/app/impulse-wireless/id1459581806)

**In-app purchases:** none


### OPSWAT SDP

[App page](https://appshunter.io/ios/app/opswat-sdp/id1574377620)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IMPULSE Wireless free?

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

### Is OPSWAT SDP free?

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

### Do IMPULSE Wireless or OPSWAT SDP have ads?

Neither IMPULSE Wireless nor OPSWAT SDP shows ads.

### Which is updated more often, IMPULSE Wireless or OPSWAT SDP?

IMPULSE Wireless ships an update every 2 months, and OPSWAT SDP every 6 months. Most recently, IMPULSE Wireless was updated on October 26, 2026 and OPSWAT SDP on October 30, 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.*