# Pet Logic vs Zen Stack

The clearest difference is in-app purchases: Pet Logic at none against Zen Stack's 1. Pet Logic also leads on update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Zen Stack sells 1 one-off in-app purchase. Pet Logic asks for nothing beyond the download.

Pet Logic ships an update every 3 days, Zen Stack monthly. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Pet Logic | Zen Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pet-logic-grid-puzzle/id6783670247/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | Ad-supported | — |
| Size | 287 MB | 50 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PIXEL KING PTE. LTD.](https://appshunter.io/developer/1839860026) | [Devrishi .](https://appshunter.io/developer/6792786288) |

## What reviewers say

### Pet Logic

[App page](https://appshunter.io/ios/app/pet-logic-grid-puzzle/id6783670247)

Engage your mind with a unique logic puzzle game featuring adorable pets. Solve daily challenges by deducing pet placements based on grid clues, offering a relaxing yet stimulating experience for puzzle enthusiasts.

**Highlights:** Unique 2-Pet Rule logic, Adorable Corgi graphics, Daily puzzle challenges, Relaxing, no-timer gameplay, Multiple skill levels

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

**In-app purchases:** none


### Zen Stack

[App page](https://appshunter.io/ios/app/zen-stack-rise-and-stack/id6792786286)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Pet Logic free?

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

### Is Zen Stack free?

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

### Do Pet Logic or Zen Stack have ads?

Both Pet Logic and Zen Stack show ads.

### Which is updated more often, Pet Logic or Zen Stack?

Pet Logic ships an update every 3 days, and Zen Stack monthly. Most recently, Pet Logic was updated on October 7, 2026 and Zen Stack on October 5, 2026.

---

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