# Naviation UTM vs GridTac

The clearest difference is update cadence: GridTac at weekly against Naviation UTM's every 6 weeks. GridTac also leads on device support (4 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Naviation UTM ships an update every 6 weeks, GridTac weekly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Naviation UTM | GridTac |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 36 MB | 28 MB |
| Requires iOS | 16.6 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Naviation](https://appshunter.io/developer/1696072960) | [Linus Nilsson](https://appshunter.io/developer/6776521170) |

## What reviewers say

### Naviation UTM

[App page](https://appshunter.io/ios/app/naviation-utm/id6740231810)

**Features:** macOS Compatibility

**In-app purchases:** none


### GridTac

[App page](https://appshunter.io/ios/app/gridtac/id6776521168)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Naviation UTM free?

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

### Is GridTac free?

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

### Do Naviation UTM or GridTac have ads?

Neither Naviation UTM nor GridTac shows ads.

### Which is updated more often, Naviation UTM or GridTac?

Naviation UTM ships an update every 6 weeks, and GridTac weekly. Most recently, Naviation UTM was updated on October 30, 2026 and GridTac on November 5, 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.*