# SRD Go vs OCAS Authenticator

The clearest difference is update cadence: SRD Go at every 2 months against OCAS Authenticator's every 5 months. 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.

SRD Go ships an update every 2 months, OCAS Authenticator every 5 months. The most recent releases landed on September 20, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | SRD Go | OCAS Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Size | 47 MB | 31 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Salumanus sp. z o.o.](https://appshunter.io/developer/1609774027) | [NetKnights GmbH](https://appshunter.io/developer/1445401030) |

## What reviewers say

### SRD Go

[App page](https://appshunter.io/ios/app/srd-go/id1609773635)

**Features:** Vision Pro support

**In-app purchases:** none


### OCAS Authenticator

[App page](https://appshunter.io/ios/app/ocas-authenticator/id6444557674)

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

**In-app purchases:** none


## Frequently asked questions

### Is SRD Go free?

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

### Is OCAS Authenticator free?

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

### Do SRD Go or OCAS Authenticator have ads?

Neither SRD Go nor OCAS Authenticator shows ads.

### Which is updated more often, SRD Go or OCAS Authenticator?

SRD Go ships an update every 2 months, and OCAS Authenticator every 5 months. Most recently, SRD Go was updated on September 20, 2026 and OCAS Authenticator on September 9, 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.*