# iSIGN+ PASS vs SGA ZTA Authenticator

iSIGN+ PASS and SGA ZTA Authenticator are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

iSIGN+ PASS ships an update every 4 months, SGA ZTA Authenticator every 6 months. The most recent releases landed on September 21, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | iSIGN+ PASS | SGA ZTA Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | — |
| Size | 19 MB | 7 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Penta Security Inc.](https://appshunter.io/developer/919437580) | [SGA Solutions CO.,ltd](https://appshunter.io/developer/1687912593) |

## What reviewers say

### iSIGN+ PASS

[App page](https://appshunter.io/ios/app/isign-plus-pass/id1573918374)

This mobile app offers a unified authentication solution, supporting various methods like PIN, pattern, OTP, biometrics, PKI certificates, and QR codes. It allows users to perform authentication via push notifications and manage their authentication history and registered devices.

**Highlights:** Multiple authentication methods (PIN, pattern, biometrics, QR), Push notification authentication, Authentication history tracking, Device and credential management, PKI certificate support

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

**In-app purchases:** none


### SGA ZTA Authenticator

[App page](https://appshunter.io/ios/app/sga-zta-authenticator/id6479223847)

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

**In-app purchases:** none


## Frequently asked questions

### Is iSIGN+ PASS free?

iSIGN+ PASS is free to download, with no in-app purchases.

### Is SGA ZTA Authenticator free?

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

### Do iSIGN+ PASS or SGA ZTA Authenticator have ads?

Neither iSIGN+ PASS nor SGA ZTA Authenticator shows ads.

### Which is updated more often, iSIGN+ PASS or SGA ZTA Authenticator?

iSIGN+ PASS ships an update every 4 months, and SGA ZTA Authenticator every 6 months. Most recently, iSIGN+ PASS was updated on September 21, 2026 and SGA ZTA Authenticator on August 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*