# HIO vs Callaway Eichenried

The clearest difference is update cadence: HIO at monthly against Callaway Eichenried's every 21 months. Callaway Eichenried's advantage is device support (3 vs 1) and iOS requirement (14.1 vs 16.6). 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.

HIO ships an update monthly, Callaway Eichenried every 21 months. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | HIO | Callaway Eichenried |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/callaway-eichenried/id1669437542/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 21 months |
| Monetization | — | Free |
| Size | 40 MB | 6 MB |
| Requires iOS | 16.6 | **14.1** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HoleInOne Fitting GmbH](https://appshunter.io/developer/657374327) | [Cntrc.me International Ltd.](https://appshunter.io/developer/1065259216) |

## What reviewers say

### HIO

[App page](https://appshunter.io/ios/app/hio-fitting/id1438058341)

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

**In-app purchases:** none


### Callaway Eichenried

[App page](https://appshunter.io/ios/app/callaway-eichenried/id1669437542)

This app provides advanced club fitting technology for golfers. It offers in-depth ball flight and club head analysis using the latest Foresight GC-Quad system. Experience a custom fitting at a leading European National Performance Center.

**Highlights:** Advanced club fitting technology, In-depth ball flight analysis, Club head analysis, Foresight GC-Quad system, Custom fitting experience

**In-app purchases:** none


## Frequently asked questions

### Is HIO free?

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

### Is Callaway Eichenried free?

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

### Do HIO or Callaway Eichenried have ads?

Neither HIO nor Callaway Eichenried shows ads.

### Which is updated more often, HIO or Callaway Eichenried?

HIO ships an update monthly, and Callaway Eichenried every 21 months. Most recently, HIO was updated on October 4, 2026 and Callaway Eichenried on October 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.*