# oMoiD Brain Train vs H2O Reminder Pro

The clearest difference is price: oMoiD Brain Train at Free against H2O Reminder Pro's $0.59. oMoiD Brain Train also leads on update cadence (every 3 weeks vs every 9 months) and iOS requirement (13.4 vs 18.4). H2O Reminder Pro's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

oMoiD Brain Train is free to download; H2O Reminder Pro costs $0.59 up front. Neither carries in-app purchases, so what you see is what you pay.

oMoiD Brain Train ships an update every 3 weeks, H2O Reminder Pro every 9 months. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | oMoiD Brain Train | H2O Reminder Pro |
| --- | --- | --- |
| Price | **Free** | $0.59 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Size | 53 MB | 4 MB |
| Requires iOS | **13.4** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [QUY DIEN LE](https://appshunter.io/developer/1745588028) | [Grzegorz Rakoca](https://appshunter.io/developer/1778459428) |

## What reviewers say

### oMoiD Brain Train

[App page](https://appshunter.io/ios/app/omoid-brain-train/id6504432719)

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

**In-app purchases:** none


### H2O Reminder Pro

[App page](https://appshunter.io/ios/app/h2o-reminder-pro/id6746629890)

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

**In-app purchases:** none


## Frequently asked questions

### Is oMoiD Brain Train free?

oMoiD Brain Train is free to download, with no in-app purchases.

### Is H2O Reminder Pro free?

H2O Reminder Pro costs $0.59, with no in-app purchases.

### Do oMoiD Brain Train or H2O Reminder Pro have ads?

oMoiD Brain Train shows ads; H2O Reminder Pro does not.

### Which is updated more often, oMoiD Brain Train or H2O Reminder Pro?

oMoiD Brain Train ships an update every 3 weeks, and H2O Reminder Pro every 9 months. Most recently, oMoiD Brain Train was updated on October 27, 2026 and H2O Reminder Pro on October 28, 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.*