# King vs MSPT

The clearest difference is in-app purchases: MSPT at none against King's 1. King's advantage is iOS requirement (12.0 vs 14.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. King sells 1 in-app purchase, starting at $7.99 per month. MSPT asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | King | MSPT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/king-devick-migraine-headache/id1359829374/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 220 MB | 509 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPad | iPad |
| Age rating | 12+ | 17+ |
| Developer | [King-Devick Test, LLC](https://appshunter.io/developer/424793545) | [Qr8 Health Inc.](https://appshunter.io/developer/1231169399) |

## What reviewers say

### King

[App page](https://appshunter.io/ios/app/king-devick-migraine-headache/id1359829374)

This app helps individuals with a history of migraines detect the early prodrome phase before a headache begins. It uses a guided eye movement test with automated speech recognition to analyze performance and compare it to past results, potentially aiding in timely treatment.

**Highlights:** Migraine prodrome detection, Saccadic eye movement test, Automated speech recognition analysis, Comparison to historical test data, Guided test administration, Early intervention support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $7.99 | per month |


### MSPT

[App page](https://appshunter.io/ios/app/mspt/id1543930951)

**In-app purchases:** none


## Frequently asked questions

### Is King free?

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

### Is MSPT free?

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

### Do King or MSPT have ads?

Neither King nor MSPT shows ads.

### Which is updated more often, King or MSPT?

King ships an update every 2 months, and MSPT every 2 months. Most recently, King was updated on November 2, 2026 and MSPT on October 27, 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.*