# Microsoft Defender vs 1ONE Express

The clearest difference is in-app purchases: 1ONE Express at none against Microsoft Defender's 3. 1ONE Express also leads on iOS requirement (15 vs 17.0). Microsoft Defender's advantage is chart position (#157 vs unranked). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Microsoft Defender sells 3 in-app purchases, starting at $6.99 per month. 1ONE Express asks for nothing beyond the download.

Microsoft Defender ships an update every 2 weeks, 1ONE Express every 3 weeks. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Microsoft Defender | 1ONE Express |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (22K ratings)](https://appshunter.io/ios/app/microsoft-defender-security/id1526737990/reviews)** | — |
| Number of ratings | **22K** | — |
| Positive reviews | 33.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Subscription | — |
| Best chart rank | **#157** | — |
| Size | 162 MB | 51 MB |
| Requires iOS | 17.0 | **15** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Microsoft Corporation](https://appshunter.io/developer/298856275) | [Ry Sokkheng](https://appshunter.io/developer/1628036349) |

## What reviewers say

### Microsoft Defender

[App page](https://appshunter.io/ios/app/microsoft-defender-security/id1526737990)

**Currently charting:** #157 Top Grossing · Business (US App Store)

This app offers comprehensive online security for individuals and families, providing antivirus scanning, threat monitoring, and identity protection. It helps safeguard personal information by scanning the dark web and offers credit monitoring and identity theft restoration services.

**Highlights:** Antivirus scanning, Threat monitoring, Dark web scanning for identity threats, Credit monitoring, Identity theft restoration, Anti-phishing protection, Multidevice alerts

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Microsoft 365 Personal | $6.99 | per month |
| Microsoft 365 Personal | $9.99 | per month |
| Microsoft 365 Family | $12.99 | per month |

**What reviewers like**

- 🚀 Fast
- 🔒 Security
- 👍 Ease of use

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔋 High battery drain
- 🔍 Excessive data usage
- 🤖 Compatibility problems
- ⚠️ Disruptive to other apps

**Reported bugs**

- Login issues
- Unexpected app crashes
- Inconsistent behavior after updates

**Requested features**

- Dark mode support
- Customizable VPN settings
- Better integration with other apps


### 1ONE Express

[App page](https://appshunter.io/ios/app/1one-express/id6793854034)

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

**In-app purchases:** none


## Frequently asked questions

### Is Microsoft Defender free?

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

### Is 1ONE Express free?

1ONE Express is free to download, with no in-app purchases.

### Do Microsoft Defender or 1ONE Express have ads?

Neither Microsoft Defender nor 1ONE Express shows ads.

### Which is updated more often, Microsoft Defender or 1ONE Express?

Microsoft Defender ships an update every 2 weeks, and 1ONE Express every 3 weeks. Most recently, Microsoft Defender was updated on October 24, 2026 and 1ONE Express on October 9, 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.*