# Tower Gage vs Thetis Tools

The clearest difference is price: Thetis Tools at Free against Tower Gage's $999.99. Thetis Tools also leads on update cadence (every 7 months vs every 40 months) and device support (3 vs 1). Tower Gage's advantage is iOS requirement (11.0 vs 14.0). On ads and in-app purchases there is nothing between them.

Thetis Tools is free to download; Tower Gage costs $999.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tower Gage ships an update every 40 months, Thetis Tools every 7 months. The most recent releases landed on August 17, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Tower Gage | Thetis Tools |
| --- | --- | --- |
| Price | $999.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 7 months** |
| Size | 58 MB | 50 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Thetis srl](https://appshunter.io/developer/397584184) |

## What reviewers say

### Tower Gage

[App page](https://appshunter.io/ios/app/tower-gage/id1418993903)

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

**In-app purchases:** none


### Thetis Tools

[App page](https://appshunter.io/ios/app/thetis-tools/id1460268980)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tower Gage free?

Tower Gage costs $999.99, with no in-app purchases.

### Is Thetis Tools free?

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

### Do Tower Gage or Thetis Tools have ads?

Neither Tower Gage nor Thetis Tools shows ads.

### Which is updated more often, Tower Gage or Thetis Tools?

Tower Gage ships an update every 40 months, and Thetis Tools every 7 months. Most recently, Tower Gage was updated on August 17, 2026 and Thetis Tools on October 26, 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.*