# Sigma AI Browser vs NSD Detector

The clearest difference is iOS requirement: NSD Detector at 15.0 against Sigma AI Browser's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sigma AI Browser | NSD Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/sigma-ai-browser/id6670252712/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 182 MB | 34 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [SigmaBrowser OÜ](https://appshunter.io/developer/1762933222) | [NEURO SCAN DETECTOR LTD](https://appshunter.io/developer/1895586615) |

## What reviewers say

### Sigma AI Browser

[App page](https://appshunter.io/ios/app/sigma-ai-browser/id6670252712)

Experience a faster, more intelligent web with this AI-powered browser. It offers enhanced security, personalized recommendations, and a clutter-free, ad-free environment. Customize your browsing with intuitive tools for seamless navigation and productivity.

**Highlights:** AI chat companion for answers, Blazing fast browsing speeds, Customizable interface, Multi-device sync, User-friendly design

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


### NSD Detector

[App page](https://appshunter.io/ios/app/nsd-detector/id6763984979)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sigma AI Browser free?

Sigma AI Browser is free to download, with no in-app purchases.

### Is NSD Detector free?

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

### Do Sigma AI Browser or NSD Detector have ads?

Neither Sigma AI Browser nor NSD Detector shows ads.

### Which is updated more often, Sigma AI Browser or NSD Detector?

Sigma AI Browser ships an update every 2 months, and NSD Detector every 2 months. Most recently, Sigma AI Browser was updated on October 20, 2026 and NSD Detector on October 11, 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.*