# Yubico Authenticator vs Instant Guard

The clearest difference is rating: Yubico Authenticator at 3.7 against Instant Guard's 3.4. Yubico Authenticator also leads on ratings volume (268 vs 61). Instant Guard's advantage is iOS requirement (13.0 vs 16.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Yubico Authenticator holds the better App Store score, 3.7 against 3.4. Both are backed by a comparable volume of ratings — 268 and 61 respectively. Written reviews point the same way: 44% of Yubico Authenticator's written reviews are positive against 38% of Instant Guard's.

Yubico Authenticator ships an update monthly, Instant Guard every 2 months. The most recent releases landed on September 14, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Yubico Authenticator | Instant Guard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (268 ratings)](https://appshunter.io/ios/app/yubico-authenticator/id1476679808/reviews)** | [3.4 (61 ratings)](https://appshunter.io/ios/app/instant-guard/id1522843324/reviews) |
| Number of ratings | **268** | 61 |
| Positive reviews | **43.6% of reviews** | 38.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 4 MB | 64 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yubico](https://appshunter.io/developer/586890748) | [ASUS](https://appshunter.io/developer/527118677) |

## What reviewers say

### Yubico Authenticator

[App page](https://appshunter.io/ios/app/yubico-authenticator/id1476679808)

Secure your online accounts with hardware-backed two-factor authentication. Store unique credentials on a physical security key, eliminating the need to store sensitive data on your mobile device. Generate verification codes without an internet connection for enhanced account protection.

**Highlights:** Hardware-backed security key storage, Touch or NFC authentication, USB-C support, Biometric unlock (FaceID/TouchID), QR code setup, User presence verification, Smart Card support

**In-app purchases:** none

**What reviewers like**

- 🚀 Works well with Yubikey
- 🔒 Secure storage of OATH secrets
- 👍 Simple and easy to use
- 🚀 NFC support added

**What reviewers complain about**

- 🐛 NFC not working on some devices
- 🐛 Clunky UI for password-protected keys
- 🐛 Crashes and freezes reported
- 🐛 Incompatible with some devices (iPad, older iPhones)

**Reported bugs**

- NFC not working reliably
- Accounts disappearing after updates
- Calculation of codes not working
- Keyboard issues when using keys

**Requested features**

- Allow editing and rearranging of entries
- Add support for multiple keys per account
- Improve iPad/tablet support
- Add dark mode option
- Improve QR code scanning


### Instant Guard

[App page](https://appshunter.io/ios/app/instant-guard/id1522843324)

This app provides a secure VPN connection, allowing you to browse anonymously and protect your financial information on public Wi-Fi. It enables remote access to your home ASUS router, ensuring your privacy and security wherever you go.

**Highlights:** One-click VPN connection, Secured and encrypted connectivity, Anonymous browsing, Change IP address and location, Remote ASUS router access

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and does its job
- 🔒 Great security focused VPN
- 👍 Setup is straightforward
- 💰 Cost-effective solution
- 🚀 Works great for remote access

**What reviewers complain about**

- 🐛 Auto connection conflicts
- 🐛 Fails to connect on iOS update
- 🐛 Cellular data severely affected
- 🐛 No internet when connected
- 🐛 Auto protect on cellular

**Reported bugs**

- Auto connection still conflicts
- Cannot connect after current iOS update
- Cellular data severely affected
- Auto protect feature comes on when on cellular network
- IP Address did not change

**Requested features**

- Add split tunnelling
- Automatic connection when leaving home network
- Ability to automatically connect/disconnect based on WiFi network
- Shortcuts widget for one-touch control
- Automation capabilities


## Frequently asked questions

### Is Yubico Authenticator free?

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

### Is Instant Guard free?

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

### Which has better reviews, Yubico Authenticator or Instant Guard?

Yubico Authenticator is rated higher. Yubico Authenticator averages 3.7 out of 5 from 268 ratings, while Instant Guard averages 3.4 from 61 ratings.

### Do Yubico Authenticator or Instant Guard have ads?

Neither Yubico Authenticator nor Instant Guard shows ads.

### Which is updated more often, Yubico Authenticator or Instant Guard?

Yubico Authenticator ships an update monthly, and Instant Guard every 2 months. Most recently, Yubico Authenticator was updated on September 14, 2026 and Instant Guard on September 20, 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.*