# Eterna Diagnostics vs The Koach

The clearest difference is in-app purchases: Eterna Diagnostics at none against The Koach's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. The Koach sells 1 in-app purchase, starting at $299.00 per 3 months. Eterna Diagnostics asks for nothing beyond the download.

Eterna Diagnostics ships an update every 2 weeks, The Koach every 3 weeks. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Eterna Diagnostics | The Koach |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/the-koach/id6642707563/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | **Freemium** | Subscription |
| Size | 112 MB | 67 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Eterna Diagnostics](https://appshunter.io/developer/1723205443) | [BEJAOFIT S.L.](https://appshunter.io/developer/1524479210) |

## What reviewers say

### Eterna Diagnostics

[App page](https://appshunter.io/ios/app/eterna-diagnostics/id6475050723)

Measure your biological age in real-time and understand how your habits impact your health. This app uses smartwatch biometric data and advanced biomarker analysis to provide actionable insights for improving cardiovascular, metabolic, hormonal, and bone health. Identify areas for improvement, optimize cognitive and physical performance, and work towards preventing chronic diseases.

**Highlights:** Real-time aging rate analysis from wearables, Advanced biomarker health panels, Population comparative insights, Intuitive habit tracking (sleep, stress, activity), Expert video tips on preventive health

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

**In-app purchases:** none


### The Koach

[App page](https://appshunter.io/ios/app/the-koach/id6642707563)

This app offers 100% personalized fitness and nutrition plans designed by a dedicated coach. It features direct chat communication, progress tracking, and continuous support to help you achieve your health goals efficiently.

**Highlights:** 100% personalized plans, Direct chat with coach, Progress measurement, Flexible training and nutrition, Continuous guidance, Custom workout routines, Adapted meal plans

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coaching trimestral | $299.00 | per 3 months |


## Frequently asked questions

### Is Eterna Diagnostics free?

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

### Is The Koach free?

The Koach is free to download, with in-app purchases available.

### Do Eterna Diagnostics or The Koach have ads?

Neither Eterna Diagnostics nor The Koach shows ads.

### Which is updated more often, Eterna Diagnostics or The Koach?

Eterna Diagnostics ships an update every 2 weeks, and The Koach every 3 weeks. Most recently, Eterna Diagnostics was updated on October 13, 2026 and The Koach on October 4, 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.*