# Flowlink vs Secure Defence

The clearest difference is iOS requirement: Secure Defence at 12.0 against Flowlink's 16.4. 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.

Flowlink ships an update every 2 months, Secure Defence every 5 months. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Flowlink | Secure Defence |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Size | 43 MB | 177 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flowlink Environmental Inc.](https://appshunter.io/developer/1458307570) | [Secure Defence Corporation](https://appshunter.io/developer/1567568386) |

## What reviewers say

### Flowlink

[App page](https://appshunter.io/ios/app/flowlink/id1458307571)

**Features:** macOS Compatibility

**In-app purchases:** none


### Secure Defence

[App page](https://appshunter.io/ios/app/secure-defence/id6479004347)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flowlink free?

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

### Is Secure Defence free?

Secure Defence is free to download, with no in-app purchases.

### Do Flowlink or Secure Defence have ads?

Neither Flowlink nor Secure Defence shows ads.

### Which is updated more often, Flowlink or Secure Defence?

Flowlink ships an update every 2 months, and Secure Defence every 5 months. Most recently, Flowlink was updated on October 17, 2026 and Secure Defence on October 3, 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.*