# Mathstack vs Zen Stack

The clearest difference is update cadence: Mathstack at every 11 days against Zen Stack's monthly. Zen Stack's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mathstack sells 3 in-app purchases, starting at $1.99 per 7 days and Zen Stack sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mathstack ships an update every 11 days, Zen Stack monthly. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Mathstack | Zen Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mathstack-sequence-puzzle/id6748113494/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 11 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 50 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Hazerim Interactive Entertainment, UAB](https://appshunter.io/developer/1804702752) | [Devrishi .](https://appshunter.io/developer/6792786288) |

## What reviewers say

### Mathstack

[App page](https://appshunter.io/ios/app/mathstack-sequence-puzzle/id6748113494)

A unique number puzzle game where you stack cards to form sequences. Strategically use temporary slots to clear the board and uncover hidden cards. Offers three difficulty levels for a tailored challenge.

**Highlights:** Sequence building gameplay, Strategic card stacking, Temporary slot management, Three difficulty levels, Uncover hidden cards

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads (Weekly) | $1.99 | per 7 days |
| No Ads (Monthly) | $5.99 | per month |
| No Ads (Lifetime) | $19.99 | one-time |


### 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 Mathstack free?

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

### Is Zen Stack free?

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

### Do Mathstack or Zen Stack have ads?

Both Mathstack and Zen Stack show ads.

### Which is updated more often, Mathstack or Zen Stack?

Mathstack ships an update every 11 days, and Zen Stack monthly. Most recently, Mathstack was updated on October 1, 2026 and Zen Stack on October 5, 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.*