# Quick Calculation Quiz vs Brain Drain

The clearest difference is in-app purchases: Brain Drain at none against Quick Calculation Quiz's 5. Brain Drain also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 87%). Quick Calculation Quiz's advantage is ratings volume (208 vs 2) and update cadence (every 10 months vs every 28 months). On price, ads and device support there is nothing between them.

Both are free to download. Quick Calculation Quiz sells 5 in-app purchases, starting at $2.99 per month. Brain Drain asks for nothing beyond the download.

Brain Drain holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Quick Calculation Quiz has 208 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 87% of Quick Calculation Quiz's written reviews are positive against 100% of Brain Drain's.

Quick Calculation Quiz ships an update every 10 months, Brain Drain every 28 months. The most recent releases landed on September 29, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Quick Calculation Quiz | Brain Drain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (208 ratings)](https://appshunter.io/ios/app/quick-calculation-quiz/id1085581108/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brain-drain-a-quick-math-game/id1477237865/reviews)** |
| Number of ratings | **208** | 2 |
| Positive reviews | 86.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 10 months** | Every 28 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 6 MB | 92 MB |
| Requires iOS | 15.2 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) | [Back Alley Technology](https://appshunter.io/developer/1477237864) |

## What reviewers say

### Quick Calculation Quiz

[App page](https://appshunter.io/ios/app/quick-calculation-quiz/id1085581108)

Test your math skills in a timed challenge. Solve equations quickly to achieve a high score and compete with friends. It's a fun way to train your brain with both easy and challenging problems.

**Highlights:** Timed math problem solving, High score tracking, Multiplayer comparison, Brain training exercises, No calculator required

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per month |
| Voluntary Payment 1 | $0.99 | one-time |
| Voluntary Payment 2 | $2.99 | one-time |
| Voluntary Payment 3 | $9.99 | one-time |
| Remove Ads | $12.99 | one-time |

**What reviewers like**

- 🧠 Effective mental math training
- 👍 Simple and user-friendly interface
- ⚡ Good difficulty progression for various skill levels
- 🎮 Engaging and fun gameplay
- 💰 Free to use with optional ad-free upgrade

**What reviewers complain about**

- 🐛 Submit button is too small and difficult to click
- 🔤 Number pad layout is confusing and unintuitive
- ⏰ Time pressure can be frustrating for some users
- 🔁 Limited variety - repetitive problem types
- 📺 Too many advertisements

**Reported bugs**

- Submit button click detection is unreliable
- Scoring system not calculating all correct answers properly
- Screen touch responsiveness issues on smaller devices

**Requested features**

- Ability to select specific calculation types (addition, subtraction, multiplication, division)
- Multiple difficulty levels or stages
- Timed vs untimed game modes
- Direct multiplayer/duel mode between two players
- Voice input option for answers


### Brain Drain

[App page](https://appshunter.io/ios/app/brain-drain-a-quick-math-game/id1477237865)

Test your reflexes and quick math skills in this addictive brain game. Compete against friends and players worldwide on the leaderboard with challenging puzzles that boost IQ and memory.

**Highlights:** Quick calculations, Varied math sums (addition, subtraction, multiplication), Competitive global leaderboard, Fast reaction-based gameplay, Nuke power-up for challenging sums, Brain training for IQ and memory

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quick Calculation Quiz free?

Quick Calculation Quiz is free to download, with in-app purchases available.

### Is Brain Drain free?

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

### Which has better reviews, Quick Calculation Quiz or Brain Drain?

Brain Drain is rated higher. Quick Calculation Quiz averages 4.6 out of 5 from 208 ratings, while Brain Drain averages 5.0 from 2 ratings.

### Do Quick Calculation Quiz or Brain Drain have ads?

Both Quick Calculation Quiz and Brain Drain show ads.

### Which is updated more often, Quick Calculation Quiz or Brain Drain?

Quick Calculation Quiz ships an update every 10 months, and Brain Drain every 28 months. Most recently, Quick Calculation Quiz was updated on September 29, 2026 and Brain Drain on September 8, 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.*