# Happy Stack Equilibrium vs Tetros

The clearest difference is ads: Happy Stack Equilibrium at none against Tetros's shown. Tetros's advantage is update cadence (every 3 months vs every 76 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Happy Stack Equilibrium ships an update every 76 months, Tetros every 3 months. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Happy Stack Equilibrium | Tetros |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/tetros-the-game/id6761915116/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 76 months | **Every 3 months** |
| Monetization | — | Ad-supported |
| Size | 75 MB | 137 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Francesc Navarro Machio](https://appshunter.io/developer/488794379) | [Raul Davrishev](https://appshunter.io/developer/1731060019) |

## What reviewers say

### Happy Stack Equilibrium

[App page](https://appshunter.io/ios/app/happy-stack-equilibrium/id1519015365)

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

**In-app purchases:** none


### Tetros

[App page](https://appshunter.io/ios/app/tetros-the-game/id6761915116)

An addictive puzzle game where you strategically place uniquely shaped pieces onto a grid to achieve a perfect fit. It offers a fresh take on classic block puzzles with satisfying gameplay and brain-training challenges.

**Highlights:** Satisfying shape placement, Fresh take on classic mechanics, Strategic and relaxing gameplay, Endless puzzle variety, Clean and minimalist visuals, Offline play

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

**In-app purchases:** none


## Frequently asked questions

### Is Happy Stack Equilibrium free?

Happy Stack Equilibrium is free to download, with no in-app purchases.

### Is Tetros free?

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

### Do Happy Stack Equilibrium or Tetros have ads?

Tetros shows ads; Happy Stack Equilibrium does not.

### Which is updated more often, Happy Stack Equilibrium or Tetros?

Happy Stack Equilibrium ships an update every 76 months, and Tetros every 3 months. Most recently, Happy Stack Equilibrium was updated on November 7, 2026 and Tetros 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.*