# ESF vs Callaway Eichenried

The clearest difference is update cadence: ESF at every 3 months against Callaway Eichenried's every 21 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.

ESF ships an update every 3 months, Callaway Eichenried every 21 months. The most recent releases landed on May 20, 2026 and July 17, 2026 respectively.

## The numbers

| Metric | ESF | 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 | **Every 3 months** | Every 21 months |
| Monetization | — | Free |
| Size | 35 MB | 6 MB |
| Requires iOS | 15.1 | **14.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Enric Serrano Murt](https://appshunter.io/developer/1111151114) | [Cntrc.me International Ltd.](https://appshunter.io/developer/1065259216) |

## What reviewers say

### ESF

[App page](https://appshunter.io/ios/app/esf/id1441362200)

**Features:** macOS Compatibility

**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 ESF free?

ESF 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 ESF or Callaway Eichenried have ads?

Neither ESF nor Callaway Eichenried shows ads.

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

ESF ships an update every 3 months, and Callaway Eichenried every 21 months. Most recently, ESF was updated on May 20, 2026 and Callaway Eichenried on July 17, 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.*