# SDB Coaching vs The Core Effect

The clearest difference is in-app purchases: The Core Effect at none against SDB Coaching's 1. SDB Coaching's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. SDB Coaching sells 1 in-app purchase, starting at $169.99 per month. The Core Effect asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 15, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SDB Coaching | The Core Effect |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 50 MB | 421 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Sabrina de Bruijn](https://appshunter.io/developer/1713000581) | [Alexandra Woodall](https://appshunter.io/developer/1732208972) |

## What reviewers say

### SDB Coaching

[App page](https://appshunter.io/ios/app/sdb-coaching/id6470121501)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Coaching | $169.99 | per month |


### The Core Effect

[App page](https://appshunter.io/ios/app/the-core-effect/id6478200604)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SDB Coaching free?

SDB Coaching is free to download, with in-app purchases available.

### Is The Core Effect free?

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

### Do SDB Coaching or The Core Effect have ads?

Neither SDB Coaching nor The Core Effect shows ads.

### Which is updated more often, SDB Coaching or The Core Effect?

SDB Coaching ships an update every 2 months, and The Core Effect every 2 months. Most recently, SDB Coaching was updated on September 15, 2026 and The Core Effect on September 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.*