# Even or odd Mental calculation vs partikles

The clearest difference is ads: partikles at none against Even or odd Mental calculation's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Even or odd Mental calculation sells 1 one-off in-app purchase and partikles sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Even or odd Mental calculation ships an update every 23 months, partikles every 12 months. The most recent releases landed on September 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Even or odd Mental calculation | partikles |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 23 months | **Every 12 months** |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 87 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Iker Vazquez](https://appshunter.io/developer/1032978250) | [Garage Imagina SL](https://appshunter.io/developer/1528703610) |

## What reviewers say

### Even or odd Mental calculation

[App page](https://appshunter.io/ios/app/even-or-odd-mental-calculation/id1032978251)

Test your mental math skills by quickly determining if the result of an on-screen operation is even or odd. Earn more points for faster answers and challenge friends to see who has the quickest mind. The difficulty increases as you progress.

**Highlights:** Timed mental calculation challenges, Score tracking for personal bests, Speed-based scoring system, Increasing difficulty levels, Multiplayer comparison

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version upgrade | $0.99 | one-time |


### partikles

[App page](https://appshunter.io/ios/app/partikles/id1629367204)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| buy partikles | $2.99 | one-time |


## Frequently asked questions

### Is Even or odd Mental calculation free?

Even or odd Mental calculation is free to download, with in-app purchases available.

### Is partikles free?

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

### Do Even or odd Mental calculation or partikles have ads?

Even or odd Mental calculation shows ads; partikles does not.

### Which is updated more often, Even or odd Mental calculation or partikles?

Even or odd Mental calculation ships an update every 23 months, and partikles every 12 months. Most recently, Even or odd Mental calculation was updated on September 16, 2026 and partikles on September 22, 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.*