# Even or odd Mental calculation vs Smoosh Lab

The clearest difference is review sentiment: Even or odd Mental calculation at 100% against Smoosh Lab's 60%. Smoosh Lab's advantage is update cadence (every 2 months vs every 23 months). On price, ads, 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 Smoosh Lab sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Even or odd Mental calculation ships an update every 23 months, Smoosh Lab every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Even or odd Mental calculation | Smoosh Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (34 ratings)](https://appshunter.io/ios/app/smoosh-lab/id1171418786/reviews)** |
| Number of ratings | — | **34** |
| Positive reviews | **100.0% of reviews** | 60.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 23 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 68 MB | 181 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Iker Vazquez](https://appshunter.io/developer/1032978250) | [Curious Labs](https://appshunter.io/developer/309017449) |

## 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 |


### Smoosh Lab

[App page](https://appshunter.io/ios/app/smoosh-lab/id1171418786)

Engage in a challenging puzzle game where you can create and share your own levels. Master a variety of puzzles, customize your experience, and compete with friends in an ever-expanding world of creative challenges.

**Highlights:** Master 100 challenging puzzles, Create unlimited levels, Share creations with friends, Solve endless community puzzles, Play at your own pace, Customize Blop shapes and lab themes

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase 2,500 Drops | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| Purchase 9,000 Drops | $1.99 | one-time |
| Purchase 20,000 Drops | $2.99 | one-time |
| Purchase 35,000 Drops | $3.99 | 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 Smoosh Lab free?

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

### Do Even or odd Mental calculation or Smoosh Lab have ads?

Both Even or odd Mental calculation and Smoosh Lab show ads.

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

Even or odd Mental calculation ships an update every 23 months, and Smoosh Lab every 2 months. Most recently, Even or odd Mental calculation was updated on November 1, 2026 and Smoosh Lab on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*