# SynZero vs Portal Passport

The clearest difference is update cadence: Portal Passport at every 2 months against SynZero's every 6 months. SynZero's advantage is iOS requirement (13.0 vs 15.6). 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.

SynZero ships an update every 6 months, Portal Passport every 2 months. The most recent releases landed on May 16, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | SynZero | Portal Passport |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 19 MB | 156 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Syngene](https://appshunter.io/developer/1547636424) | [Portal Innovations, LLC](https://appshunter.io/developer/1782344285) |

## What reviewers say

### SynZero

[App page](https://appshunter.io/ios/app/synzero/id1598552741)

**Features:** macOS Compatibility

**In-app purchases:** none


### Portal Passport

[App page](https://appshunter.io/ios/app/portal-passport/id6738790112)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is SynZero free?

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

### Is Portal Passport free?

Portal Passport is free to download, with no in-app purchases.

### Do SynZero or Portal Passport have ads?

Neither SynZero nor Portal Passport shows ads.

### Which is updated more often, SynZero or Portal Passport?

SynZero ships an update every 6 months, and Portal Passport every 2 months. Most recently, SynZero was updated on May 16, 2026 and Portal Passport on June 4, 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.*