# BrainKeeper vs WaterKeep

The clearest difference is update cadence: WaterKeep at every 4 days against BrainKeeper's fortnightly. BrainKeeper's advantage is iOS requirement (14.1 vs 16.1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for BrainKeeper against 5.0 for WaterKeep. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

BrainKeeper ships an update fortnightly, WaterKeep every 4 days. The most recent releases landed on October 15, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | BrainKeeper | WaterKeep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/brainkeeper/id1578953731/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/waterkeep-daily-water-tracker/id6468182302/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free | Free |
| Size | 5 MB | 3 MB |
| Requires iOS | **14.1** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kamil Suleimanov](https://appshunter.io/developer/1530811067) | [Parker Muery](https://appshunter.io/developer/1709593912) |

## What reviewers say

### BrainKeeper

[App page](https://appshunter.io/ios/app/brainkeeper/id1578953731)

Engage in daily, quick brain exercises designed to sharpen your mind and improve memory. This program offers three difficulty levels to challenge users and help prevent cognitive aging. Consistent use for 60 days can lead to noticeable improvements in mental acuity.

**Highlights:** Daily brain exercises, Memory improvement, Cognitive aging prevention, Less than 5 minutes per workout, Three difficulty levels, No ads or subscriptions

**In-app purchases:** none


### WaterKeep

[App page](https://appshunter.io/ios/app/waterkeep-daily-water-tracker/id6468182302)

This app offers a simple and elegant way to track your daily water intake. With a minimalist design and one-tap logging, it makes staying hydrated hassle-free. Focus on your hydration goals without complex metrics or overwhelming graphs.

**Highlights:** Minimalist hydration tracking, One-tap logging, Elegant and simple interface, Clear intake display

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BrainKeeper free?

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

### Is WaterKeep free?

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

### Which has better reviews, BrainKeeper or WaterKeep?

BrainKeeper and WaterKeep are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do BrainKeeper or WaterKeep have ads?

Neither BrainKeeper nor WaterKeep shows ads.

### Which is updated more often, BrainKeeper or WaterKeep?

BrainKeeper ships an update fortnightly, and WaterKeep every 4 days. Most recently, BrainKeeper was updated on October 15, 2026 and WaterKeep 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.*