# Secure DNS & Firewall vs LinkTrace

The clearest difference is in-app purchases: LinkTrace at none against Secure DNS & Firewall's 2. LinkTrace also leads on iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Secure DNS & Firewall sells 2 in-app purchases, starting at $1.49 per month. LinkTrace asks for nothing beyond the download.

## The numbers

| Metric | Secure DNS & Firewall | LinkTrace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (22 ratings)](https://appshunter.io/ios/app/secure-dns-and-firewall/id1553642022/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 38 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Flinteger LLC](https://appshunter.io/developer/1553642024) | [世伟 马](https://appshunter.io/developer/1856751173) |

## What reviewers say

### Secure DNS & Firewall

[App page](https://appshunter.io/ios/app/secure-dns-and-firewall/id1553642022)

Encrypts DNS queries for enhanced privacy and security. It blocks ads, trackers, and malicious sites with customizable rules, offering a safer browsing experience. View your DNS query history for insights and control.

**Highlights:** Encrypted DNS over HTTPS (DoH), Customizable domain block list, Predefined blocked categories, App and service blocking, DNS query history, Ad and tracker blocking

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DNSS Monthly Subscription | $1.49 | per month |
| DNSS Yearly Subscription | $12.99 | per year |


### LinkTrace

[App page](https://appshunter.io/ios/app/linktrace/id6775730609)

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

**In-app purchases:** none


## Frequently asked questions

### Is Secure DNS & Firewall free?

Secure DNS & Firewall is free to download, with in-app purchases available.

### Is LinkTrace free?

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

### Do Secure DNS & Firewall or LinkTrace have ads?

Neither Secure DNS & Firewall nor LinkTrace shows ads.

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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.*