# The Doctor's Guide vs Core.X

The clearest difference is ads: Core.X at none against The Doctor's Guide's shown. Core.X also leads on update cadence (every 3 days vs every 18 months) and iOS requirement (16.4 vs 18.2). On price, 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.

The Doctor's Guide ships an update every 18 months, Core.X every 3 days. The most recent releases landed on September 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | The Doctor's Guide | Core.X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (10 ratings)](https://appshunter.io/ios/app/corex/id6755406927/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 16 MB | 115 MB |
| Requires iOS | 18.2 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Bart Rademaker](https://appshunter.io/developer/1599161109) | [WILSON INNOVATIONS LLC](https://appshunter.io/developer/1787937367) |

## What reviewers say

### The Doctor's Guide

[App page](https://appshunter.io/ios/app/the-doctors-guide/id1599161107)

**Features:** macOS Compatibility

**In-app purchases:** none


### Core.X

[App page](https://appshunter.io/ios/app/corex/id6755406927)

This platform streamlines gym and fitness studio operations by integrating class scheduling, member engagement, analytics, and payments. It offers members instant booking and progress tracking, while owners gain tools for managing operations, analyzing performance, and processing payments.

**Highlights:** Class scheduling and booking, Member engagement tools, Progress tracking and goals, Community social feed, Advanced analytics, Integrated payments and billing, Custom branding

**In-app purchases:** none


## Frequently asked questions

### Is The Doctor's Guide free?

The Doctor's Guide is free to download, with no in-app purchases.

### Is Core.X free?

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

### Do The Doctor's Guide or Core.X have ads?

The Doctor's Guide shows ads; Core.X does not.

### Which is updated more often, The Doctor's Guide or Core.X?

The Doctor's Guide ships an update every 18 months, and Core.X every 3 days. Most recently, The Doctor's Guide was updated on September 25, 2026 and Core.X on October 18, 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.*