# Secure DNS & Firewall vs Authenticator 2FA by KeepSolid

The clearest difference is in-app purchases: Authenticator 2FA by KeepSolid at none against Secure DNS & Firewall's 2. Authenticator 2FA by KeepSolid also leads on iOS requirement (14.0 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.0 for Secure DNS & Firewall against 3.9 for Authenticator 2FA by KeepSolid. Both are backed by a comparable volume of ratings — 22 and 11 respectively. Written reviews are what separate them: 70% of Secure DNS & Firewall's written reviews are positive against 75% of Authenticator 2FA by KeepSolid's.

Secure DNS & Firewall ships an update every 6 weeks, Authenticator 2FA by KeepSolid monthly. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Secure DNS & Firewall | Authenticator 2FA by KeepSolid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (22 ratings)](https://appshunter.io/ios/app/secure-dns-and-firewall/id1553642022/reviews)** | [3.9 (11 ratings)](https://appshunter.io/ios/app/authenticator-2fa-by-keepsolid/id1660779042/reviews) |
| Number of ratings | **22** | 11 |
| Positive reviews | 70.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 42 MB | 45 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Flinteger LLC](https://appshunter.io/developer/1553642024) | [KeepSolid Inc.](https://appshunter.io/developer/674978021) |

## 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 |


### Authenticator 2FA by KeepSolid

[App page](https://appshunter.io/ios/app/authenticator-2fa-by-keepsolid/id1660779042)

This app generates time-based one-time passwords to add an extra layer of security for your online accounts. It supports multi-factor authentication for services like Facebook, Google, and Amazon, protecting your data from unauthorized access. The app offers multi-device support and a user-friendly interface.

**Highlights:** Two-factor authentication (TFA/2FA), Time-based one-time passwords (TOTP), Multi-device support, Secure code generation, User-friendly interface, Account aggregation

**Features:** Apple Watch app, 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 Authenticator 2FA by KeepSolid free?

Authenticator 2FA by KeepSolid is free to download, with no in-app purchases.

### Which has better reviews, Secure DNS & Firewall or Authenticator 2FA by KeepSolid?

Secure DNS & Firewall is rated higher. Secure DNS & Firewall averages 4.0 out of 5 from 22 ratings, while Authenticator 2FA by KeepSolid averages 3.9 from 11 ratings.

### Do Secure DNS & Firewall or Authenticator 2FA by KeepSolid have ads?

Neither Secure DNS & Firewall nor Authenticator 2FA by KeepSolid shows ads.

### Which is updated more often, Secure DNS & Firewall or Authenticator 2FA by KeepSolid?

Secure DNS & Firewall ships an update every 6 weeks, and Authenticator 2FA by KeepSolid monthly. Most recently, Secure DNS & Firewall was updated on October 12, 2026 and Authenticator 2FA by KeepSolid on September 29, 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.*