# Go TDC vs Opus

The clearest difference is update cadence: Opus at fortnightly against Go TDC's every 5 weeks. Opus also leads on iOS requirement (14.0 vs 16). 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.

Go TDC ships an update every 5 weeks, Opus fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Go TDC | Opus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Size | 137 MB | 38 MB |
| Requires iOS | 16 | **14.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Transat A.T. inc.](https://appshunter.io/developer/898803345) | [Hoda AbdelAtif](https://appshunter.io/developer/1812692934) |

## What reviewers say

### Go TDC

[App page](https://appshunter.io/ios/app/go-tdc/id6742877582)

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

**In-app purchases:** none


### Opus

[App page](https://appshunter.io/ios/app/opus-hr/id6743555163)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Go TDC free?

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

### Is Opus free?

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

### Do Go TDC or Opus have ads?

Neither Go TDC nor Opus shows ads.

### Which is updated more often, Go TDC or Opus?

Go TDC ships an update every 5 weeks, and Opus fortnightly. Most recently, Go TDC was updated on October 30, 2026 and Opus on October 28, 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.*