# DefensX Web Browser vs NanoSubs

The clearest difference is in-app purchases: DefensX Web Browser at none against NanoSubs's 1. DefensX Web Browser also leads on iOS requirement (14.7 vs 17.6). NanoSubs's advantage is update cadence (every 9 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. NanoSubs sells 1 one-off in-app purchase. DefensX Web Browser asks for nothing beyond the download.

DefensX Web Browser ships an update every 3 weeks, NanoSubs every 9 days. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | DefensX Web Browser | NanoSubs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/defensx-web-browser/id1545035409/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 4 MB | 7 MB |
| Requires iOS | **14.7** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Isoolate Inc.](https://appshunter.io/developer/1545035411) | [恒俭 董](https://appshunter.io/developer/947356968) |

## What reviewers say

### DefensX Web Browser

[App page](https://appshunter.io/ios/app/defensx-web-browser/id1545035409)

This application offers advanced cybersecurity by isolating users from web and SaaS application threats. It provides protection for users working remotely on any device and network through unique isolation technologies.

**Highlights:** Application-driven cybersecurity, Patent-pending isolation technologies, Protection from web threats, Protection from SaaS application threats, Works on any device and network

**Features:** macOS Compatibility

**In-app purchases:** none


### NanoSubs

[App page](https://appshunter.io/ios/app/nanosubs/id6759703321)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $1.99 | one-time |


## Frequently asked questions

### Is DefensX Web Browser free?

DefensX Web Browser is free to download, with no in-app purchases.

### Is NanoSubs free?

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

### Do DefensX Web Browser or NanoSubs have ads?

Neither DefensX Web Browser nor NanoSubs shows ads.

### Which is updated more often, DefensX Web Browser or NanoSubs?

DefensX Web Browser ships an update every 3 weeks, and NanoSubs every 9 days. Most recently, DefensX Web Browser was updated on October 1, 2026 and NanoSubs on October 5, 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.*