# Sudoku Pi vs Zoolitaire

The clearest difference is price: Zoolitaire at Free against Sudoku Pi's $1.99. Zoolitaire also leads on update cadence (every 2 weeks vs every 2 months). Sudoku Pi's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

Zoolitaire is free to download; Sudoku Pi costs $1.99 up front. Zoolitaire sells 2 in-app purchases, starting at $2.99 per 7 days. Sudoku Pi asks for nothing beyond the download.

Sudoku Pi ships an update every 2 months, Zoolitaire every 2 weeks. The most recent releases landed on September 17, 2026 and July 25, 2026 respectively.

## The numbers

| Metric | Sudoku Pi | Zoolitaire |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zoolitaire/id6479218498/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 37 MB | 46 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Arend van Beelen](https://appshunter.io/developer/1708724419) | [Rustunit B.V.](https://appshunter.io/developer/1735215629) |

## What reviewers say

### Sudoku Pi

[App page](https://appshunter.io/ios/app/sudoku-pi/id6467504425)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zoolitaire

[App page](https://appshunter.io/ios/app/zoolitaire/id6479218498)

A charming puzzle game inspired by classic peg solitaire, featuring adorable zoo animals and a variety of levels for all ages. Enjoy a free download with optional in-app purchases for game items.

**Highlights:** Peg solitaire gameplay, Cute zoo animal theme, Multiple levels and scenarios, Challenging for all ages, Free to download and play

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $2.99 | per 7 days |
| Unlock 100 Premium Levels | $0.99 | one-time |


## Frequently asked questions

### Is Sudoku Pi free?

Sudoku Pi costs $1.99, with no in-app purchases.

### Is Zoolitaire free?

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

### Do Sudoku Pi or Zoolitaire have ads?

Neither Sudoku Pi nor Zoolitaire shows ads.

### Which is updated more often, Sudoku Pi or Zoolitaire?

Sudoku Pi ships an update every 2 months, and Zoolitaire every 2 weeks. Most recently, Sudoku Pi was updated on September 17, 2026 and Zoolitaire on July 25, 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.*