# Comtrade Viewer vs GridHUBB

The clearest difference is update cadence: Comtrade Viewer at fortnightly against GridHUBB's every 4 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.

Comtrade Viewer ships an update fortnightly, GridHUBB every 4 months. The most recent releases landed on September 17, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Comtrade Viewer | GridHUBB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Size | 4 MB | 161 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Russell Patterson](https://appshunter.io/developer/1723606459) | [Hubbell Inc](https://appshunter.io/developer/1263996930) |

## What reviewers say

### Comtrade Viewer

[App page](https://appshunter.io/ios/app/comtrade-viewer/id1469713323)

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

**In-app purchases:** none


### GridHUBB

[App page](https://appshunter.io/ios/app/gridhubb/id6499595556)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Comtrade Viewer free?

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

### Is GridHUBB free?

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

### Do Comtrade Viewer or GridHUBB have ads?

Neither Comtrade Viewer nor GridHUBB shows ads.

### Which is updated more often, Comtrade Viewer or GridHUBB?

Comtrade Viewer ships an update fortnightly, and GridHUBB every 4 months. Most recently, Comtrade Viewer was updated on September 17, 2026 and GridHUBB on September 22, 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.*