# Even or odd Mental calculation vs Equilibrians (Lite)

The clearest difference is ads: Equilibrians (Lite) at none against Even or odd Mental calculation's shown. Equilibrians (Lite) also leads on iOS requirement (13.0 vs 15.0). Even or odd Mental calculation's advantage is update cadence (every 23 months vs every 105 months). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Even or odd Mental calculation sells 1 one-off in-app purchase and Equilibrians (Lite) 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, Equilibrians (Lite) every 105 months. The most recent releases landed on October 20, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Even or odd Mental calculation | Equilibrians (Lite) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/equilibrians-lite/id1232206920/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 23 months** | Every 105 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 68 MB | 209 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Iker Vazquez](https://appshunter.io/developer/1032978250) | [Oddrobo Software AB](https://appshunter.io/developer/423545647) |

## 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 |


### Equilibrians (Lite)

[App page](https://appshunter.io/ios/app/equilibrians-lite/id1232206920)

A puzzle game where players balance creatures of different weights on a seesaw. It visually explains mathematical concepts and requires constructing valid mathematical equalities to solve puzzles. Offers multiple solutions and collectible rewards.

**Highlights:** Balance and weight puzzles, Visual mathematical explanations, Constructing mathematical equalities, Multi-user support, Collectible stars and stickers, Randomly generated puzzles

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $1.99 | 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 Equilibrians (Lite) free?

Equilibrians (Lite) is free to download, with in-app purchases available.

### Do Even or odd Mental calculation or Equilibrians (Lite) have ads?

Even or odd Mental calculation shows ads; Equilibrians (Lite) does not.

### Which is updated more often, Even or odd Mental calculation or Equilibrians (Lite)?

Even or odd Mental calculation ships an update every 23 months, and Equilibrians (Lite) every 105 months. Most recently, Even or odd Mental calculation was updated on October 20, 2026 and Equilibrians (Lite) on November 2, 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.*