# Quick mental calculation vs Plants

The clearest difference is in-app purchases: Quick mental calculation at none against Plants's 8. Quick mental calculation also leads on update cadence (every 11 days vs every 2 months) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Plants sells 8 one-off in-app purchases. Quick mental calculation asks for nothing beyond the download.

Quick mental calculation ships an update every 11 days, Plants every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Quick mental calculation | Plants |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/plants-pixel-puzzle-adventure/id1597686403/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 11 days** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 277 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ERX](https://appshunter.io/developer/513941286) | [Feelcerca Inc.](https://appshunter.io/developer/1539585377) |

## What reviewers say

### Quick mental calculation

[App page](https://appshunter.io/ios/app/quick-mental-calculation/id841970890)

**Features:** macOS Compatibility

**In-app purchases:** none


### Plants

[App page](https://appshunter.io/ios/app/plants-pixel-puzzle-adventure/id1597686403)

Embark on a pixel art adventure as a fairy using magical plants to battle mechanized creatures. Solve challenging action puzzles with infinite solutions and compete in global rankings. Enjoy retro visuals and versatile controls.

**Highlights:** Charming pixel art aesthetics, Engaging action puzzles, Infinite ways to clear stages, Competitive ranking system, Versatile control options, Layered fairy movement

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100Gems | $0.99 | one-time |
| 525Gems | $3.99 | one-time |
| Silver VIP card | $3.99 | one-time |
| 1100Gems | $7.99 | one-time |
| 2300Gems | $14.99 | one-time |
| 6000Gems | $39.99 | one-time |
| Gold VIP card | $39.99 | one-time |
| 12500Gems | $69.99 | one-time |


## Frequently asked questions

### Is Quick mental calculation free?

Quick mental calculation is free to download, with no in-app purchases.

### Is Plants free?

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

### Do Quick mental calculation or Plants have ads?

Both Quick mental calculation and Plants show ads.

### Which is updated more often, Quick mental calculation or Plants?

Quick mental calculation ships an update every 11 days, and Plants every 2 months. Most recently, Quick mental calculation was updated on November 6, 2026 and Plants on November 3, 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.*