# Authenticator App vs SYSTEM // ZERO

The clearest difference is ads: SYSTEM // ZERO at none against Authenticator App's shown. SYSTEM // ZERO also leads on update cadence (every 3 days vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Authenticator App sells 8 in-app purchases, starting at $2.99 per 7 days and SYSTEM // ZERO sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Authenticator App ships an update every 6 weeks, SYSTEM // ZERO every 3 days. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Authenticator App | SYSTEM // ZERO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (29 ratings)](https://appshunter.io/ios/app/authenticator-app-2fa-otp/id6757484813/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 45 MB | 57 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Solid Dijital](https://appshunter.io/developer/1862145370) | [Raushan Nimatov](https://appshunter.io/developer/1888973196) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-otp/id6757484813)

This app provides secure two-factor authentication (2FA) and multi-factor authentication (MFA) by generating time-based one-time passwords (TOTP) for online accounts. It offers encrypted backups, cloud sync, and QR code support for easy account management across multiple devices.

**Highlights:** Secure 2FA/MFA code generation, Encrypted backup and cloud sync, QR code account addition, Multi-device access, Reliable and fast performance

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Basic Subscription | $2.99 | per 7 days |
| Weekly Pre Subscription | $7.99 | per 7 days |
| Weekly Plus Subscription | $8.99 | per 7 days |
| Weekly Pro Subscription | $9.99 | per 7 days |
| Weekly Platinium Subscription | $11.99 | per 7 days |
| Yearly Basic Subscription | $39.99 | per year |
| Yearly Plus Subscription | $49.99 | per year |
| Yearly Pro Subscription | $59.99 | per year |


### SYSTEM // ZERO

[App page](https://appshunter.io/ios/app/system-zero/id6801821275)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knight Protocol System Pack | $9.99 | one-time |
| Solo Level Up System Pack | $9.99 | one-time |


## Frequently asked questions

### Is Authenticator App free?

Authenticator App is free to download, with in-app purchases available.

### Is SYSTEM // ZERO free?

SYSTEM // ZERO is free to download, with in-app purchases available.

### Do Authenticator App or SYSTEM // ZERO have ads?

Authenticator App shows ads; SYSTEM // ZERO does not.

### Which is updated more often, Authenticator App or SYSTEM // ZERO?

Authenticator App ships an update every 6 weeks, and SYSTEM // ZERO every 3 days. Most recently, Authenticator App was updated on October 4, 2026 and SYSTEM // ZERO on October 10, 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.*