# Critter Panic! vs Even or odd Mental calculation

The clearest difference is price: Even or odd Mental calculation at Free against Critter Panic!'s $1.99. Critter Panic!'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On review sentiment and device support there is nothing between them.

Even or odd Mental calculation is free to download; Critter Panic! costs $1.99 up front. Even or odd Mental calculation sells 1 one-off in-app purchase. Critter Panic! asks for nothing beyond the download.

Critter Panic! ships an update every 3 months, Even or odd Mental calculation every 23 months. The most recent releases landed on October 29, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Critter Panic! | Even or odd Mental calculation |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/critter-panic/id432202758/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 94.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 23 months |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#113** | — |
| Size | 4 MB | 68 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chaotic Box](https://appshunter.io/developer/293202011) | [Iker Vazquez](https://appshunter.io/developer/1032978250) |

## What reviewers say

### Critter Panic!

[App page](https://appshunter.io/ios/app/critter-panic/id432202758)

**Currently charting:** #113 Top Paid · Family (US App Store)

Engage in a fast-paced matching game that challenges your reflexes and cognitive speed. Test your ability to quickly tap left or right based on on-screen cues. Experience addictive gameplay that gets progressively more challenging.

**Highlights:** Left/right matching, Fast-paced gameplay, Brain-teasing challenges, Addictive mechanics, Simple tap controls

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple yet addictive gameplay
- 🚀 Fast-paced and challenging
- 💎 Cute retro graphics and music
- 🕹️ Great for hand-eye coordination
- 🕰️ Perfect for quick gaming sessions

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🔁 Repetitive gameplay can get monotonous
- 🔒 Lack of save/progress system
- 🔍 Unclear progression and level system

**Reported bugs**

- Achievements not triggering correctly
- Crashes on certain device models
- Compatibility issues with newer iOS versions

**Requested features**

- More character/object variety
- Ability to select/skip levels
- Leaderboards and achievements
- Difficulty settings or customization


### 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 |


## Frequently asked questions

### Is Critter Panic! free?

Critter Panic! costs $1.99, with no in-app purchases.

### Is Even or odd Mental calculation free?

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

### Do Critter Panic! or Even or odd Mental calculation have ads?

Even or odd Mental calculation shows ads; Critter Panic! does not.

### Which is updated more often, Critter Panic! or Even or odd Mental calculation?

Critter Panic! ships an update every 3 months, and Even or odd Mental calculation every 23 months. Most recently, Critter Panic! was updated on October 29, 2026 and Even or odd Mental calculation on October 20, 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.*