# Doomsday Trainer vs ADHD Focus by EasyRead

The clearest difference is ads: Doomsday Trainer at none against ADHD Focus by EasyRead's shown. On price, update cadence, 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.

Doomsday Trainer ships an update every 5 days, ADHD Focus by EasyRead every 6 days. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Doomsday Trainer | ADHD Focus by EasyRead |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/doomsday-trainer/id6760719687/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 6 days |
| Monetization | Free | — |
| Size | 15 MB | 8 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maarten Claessen](https://appshunter.io/developer/1885901059) | [Sayif-Ullah Rasheedd](https://appshunter.io/developer/1877946593) |

## What reviewers say

### Doomsday Trainer

[App page](https://appshunter.io/ios/app/doomsday-trainer/id6760719687)

Master the Doomsday Algorithm to instantly calculate the day of the week for any historical date. Engage in timed challenges, compete against others, and practice various calculation methods to improve your speed and accuracy.

**Highlights:** Doomsday Algorithm calculation, Timed streak challenges, 1-on-1 live battles, Multiple training methods, Targeted component drills, Step-by-step tutorial

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

**In-app purchases:** none


### ADHD Focus by EasyRead

[App page](https://appshunter.io/ios/app/adhd-focus-by-easyread/id6787424749)

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

**In-app purchases:** none


## Frequently asked questions

### Is Doomsday Trainer free?

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

### Is ADHD Focus by EasyRead free?

ADHD Focus by EasyRead is free to download, with no in-app purchases.

### Do Doomsday Trainer or ADHD Focus by EasyRead have ads?

ADHD Focus by EasyRead shows ads; Doomsday Trainer does not.

### Which is updated more often, Doomsday Trainer or ADHD Focus by EasyRead?

Doomsday Trainer ships an update every 5 days, and ADHD Focus by EasyRead every 6 days. Most recently, Doomsday Trainer was updated on September 30, 2026 and ADHD Focus by EasyRead on October 6, 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.*