# Drain Brain vs PromptWorldGame

The clearest difference is ads: Drain Brain at none against PromptWorldGame's shown. Drain Brain also leads on update cadence (daily vs every 3 days). PromptWorldGame's advantage is iOS requirement (15.0 vs 26.0). On price, 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.

Drain Brain ships an update daily, PromptWorldGame every 3 days. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Drain Brain | PromptWorldGame |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/drain-brain/id6758406110/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 3 days |
| Monetization | Free | — |
| Size | 14 MB | 125 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Symbolic Software](https://appshunter.io/developer/613116232) | [Takumi Fukushima](https://appshunter.io/developer/1537491069) |

## What reviewers say

### Drain Brain

[App page](https://appshunter.io/ios/app/drain-brain/id6758406110)

A retro-styled puzzle game where players connect pipes on a grid to create a path for flowing liquid. Score points by filling pipes and race against the clock to fix dead ends before the flow stops. Features include various pipe types, a smart queue, and bombs to correct mistakes.

**Highlights:** Pipe connection puzzles, Retro LCD handheld style, Progressive difficulty, Smart queue system, Game Center leaderboards, Original soundtrack

**Features:** macOS Compatibility

**In-app purchases:** none


### PromptWorldGame

[App page](https://appshunter.io/ios/app/promptworldgame/id6792763100)

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

**In-app purchases:** none


## Frequently asked questions

### Is Drain Brain free?

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

### Is PromptWorldGame free?

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

### Do Drain Brain or PromptWorldGame have ads?

PromptWorldGame shows ads; Drain Brain does not.

### Which is updated more often, Drain Brain or PromptWorldGame?

Drain Brain ships an update daily, and PromptWorldGame every 3 days. Most recently, Drain Brain was updated on October 25, 2026 and PromptWorldGame on October 15, 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.*