# Symbol Series vs Drain Brain

Symbol Series and Drain Brain both sit at 5.0 stars, but that hides the real split: 100% of Drain Brain's written reviews are positive against 50% of Symbol Series's. Drain Brain also leads on in-app purchases (none vs 1) and ads (none vs shown). Symbol Series's advantage is iOS requirement (15.0 vs 26.0). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Symbol Series sells 1 one-off in-app purchase. Drain Brain asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Symbol Series against 5.0 for Drain Brain. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews are what separate them: 50% of Symbol Series's written reviews are positive against 100% of Drain Brain's.

Symbol Series ships an update every 3 months, Drain Brain daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Symbol Series | Drain Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/symbol-series/id1079313304/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/drain-brain/id6758406110/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 14 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AsgardSoft GmbH](https://appshunter.io/developer/570168173) | [Symbolic Software](https://appshunter.io/developer/613116232) |

## What reviewers say

### Symbol Series

[App page](https://appshunter.io/ios/app/symbol-series/id1079313304)

Engage your mind with a unique puzzle game that challenges you to find hidden symbol series. Explore various search modes, adjust difficulty, and compete globally. Offers an endless supply of automatically generated puzzles for continuous play.

**Highlights:** Icon, word, number, and color search, Infinite automatically generated puzzles, Three difficulty levels, Optional timer for speed challenges, Global leaderboards and achievements, Offline high score tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


### 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


## Frequently asked questions

### Is Symbol Series free?

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

### Is Drain Brain free?

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

### Which has better reviews, Symbol Series or Drain Brain?

Symbol Series and Drain Brain are both rated 5.0 out of 5 on the App Store, from 2 and 4 ratings respectively.

### Do Symbol Series or Drain Brain have ads?

Symbol Series shows ads; Drain Brain does not.

### Which is updated more often, Symbol Series or Drain Brain?

Symbol Series ships an update every 3 months, and Drain Brain daily. Most recently, Symbol Series was updated on October 24, 2026 and Drain Brain on October 25, 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.*