# XOTC Authenticator vs Invisinet iZTA

The clearest difference is update cadence: Invisinet iZTA at every 3 months against XOTC Authenticator's every 6 months. XOTC Authenticator's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

XOTC Authenticator ships an update every 6 months, Invisinet iZTA every 3 months. The most recent releases landed on December 22, 2025 and September 21, 2026 respectively.

## The numbers

| Metric | XOTC Authenticator | Invisinet iZTA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 31 MB | 33 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [XIID Corporation](https://appshunter.io/developer/1596437821) | [Invisinet Technologies LLC](https://appshunter.io/developer/1710414973) |

## What reviewers say

### XOTC Authenticator

[App page](https://appshunter.io/ios/app/xotc-authenticator/id1643410778)

**In-app purchases:** none


### Invisinet iZTA

[App page](https://appshunter.io/ios/app/invisinet-izta/id6476008742)

**In-app purchases:** none


## Frequently asked questions

### Is XOTC Authenticator free?

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

### Is Invisinet iZTA free?

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

### Do XOTC Authenticator or Invisinet iZTA have ads?

Neither XOTC Authenticator nor Invisinet iZTA shows ads.

### Which is updated more often, XOTC Authenticator or Invisinet iZTA?

XOTC Authenticator ships an update every 6 months, and Invisinet iZTA every 3 months. Most recently, XOTC Authenticator was updated on December 22, 2025 and Invisinet iZTA on September 21, 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.*