# Simple vs Calc Ninja

The clearest difference is update cadence: Calc Ninja at monthly against Simple's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Simple ships an update every 5 months, Calc Ninja monthly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Simple | Calc Ninja |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (49 ratings)](https://appshunter.io/ios/app/simple-spidersolitaire/id839432129/reviews)** | — |
| Number of ratings | **49** | — |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 29 MB | 118 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [KENTA OKAMURA](https://appshunter.io/developer/688249455) | [kotaro yamada](https://appshunter.io/developer/1193903506) |

## What reviewers say

### Simple

[App page](https://appshunter.io/ios/app/simple-spidersolitaire/id839432129)

Enjoy a classic card game experience with this simple and pleasant application. Designed for quick play during commutes or while waiting, it offers intuitive controls and the ability to undo moves. The goal is to arrange all cards in descending order by suit.

**Highlights:** Simple and pleasant interface, One-tap card movement, Undo any move, Ideal for short play sessions, Classic Spider Solitaire gameplay

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

**In-app purchases:** none


### Calc Ninja

[App page](https://appshunter.io/ios/app/calc-ninja-mental-math-games/id6784948949)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple free?

Simple is free to download, with no in-app purchases.

### Is Calc Ninja free?

Calc Ninja is free to download, with no in-app purchases.

### Do Simple or Calc Ninja have ads?

Both Simple and Calc Ninja show ads.

### Which is updated more often, Simple or Calc Ninja?

Simple ships an update every 5 months, and Calc Ninja monthly. Most recently, Simple was updated on November 6, 2026 and Calc Ninja on October 31, 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.*