# OTDR Data Transporter vs GSS Quality Audit

The clearest difference is update cadence: GSS Quality Audit at every 5 months against OTDR Data Transporter's every 15 months. GSS Quality Audit also leads on iOS requirement (12.0 vs 15.5). OTDR Data Transporter's advantage is device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.

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

OTDR Data Transporter ships an update every 15 months, GSS Quality Audit every 5 months. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | OTDR Data Transporter | GSS Quality Audit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 months** |
| Size | 20 MB | 24 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yokogawa Test & Measurement Corporation](https://appshunter.io/developer/997661022) | [Ciena](https://appshunter.io/developer/646843125) |

## What reviewers say

### OTDR Data Transporter

[App page](https://appshunter.io/ios/app/otdr-data-transporter/id997661023)

**In-app purchases:** none


### GSS Quality Audit

[App page](https://appshunter.io/ios/app/gss-quality-audit/id1063744314)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTDR Data Transporter free?

OTDR Data Transporter is free to download, with no in-app purchases.

### Is GSS Quality Audit free?

GSS Quality Audit is free to download, with no in-app purchases.

### Do OTDR Data Transporter or GSS Quality Audit have ads?

Neither OTDR Data Transporter nor GSS Quality Audit shows ads.

### Which is updated more often, OTDR Data Transporter or GSS Quality Audit?

OTDR Data Transporter ships an update every 15 months, and GSS Quality Audit every 5 months. Most recently, OTDR Data Transporter was updated on October 17, 2026 and GSS Quality Audit on October 13, 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.*