# Sort It Stack 3D vs Piggy Invasion

The clearest difference is rating: Sort It Stack 3D at 3.5 against Piggy Invasion's 1.0. Sort It Stack 3D also leads on iOS requirement (13.0 vs 18.0). Piggy Invasion's advantage is ads (none vs shown) and update cadence (every 3 months vs every 34 months). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Sort It Stack 3D sells 1 one-off in-app purchase and Piggy Invasion sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sort It Stack 3D holds the better App Store score, 3.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Sort It Stack 3D ships an update every 34 months, Piggy Invasion every 3 months. The most recent releases landed on September 21, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Sort It Stack 3D | Piggy Invasion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/sort-it-stack-3d/id1502160236/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/piggy-invasion/id6748685093/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 34 months | **Every 3 months** |
| Monetization | Ad-supported | **Free** |
| Size | 133 MB | 78 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [JOYCE ISANYA](https://appshunter.io/developer/1843627337) | [Andy Soft](https://appshunter.io/developer/367577511) |

## What reviewers say

### Sort It Stack 3D

[App page](https://appshunter.io/ios/app/sort-it-stack-3d/id1502160236)

A relaxing puzzle game where you sort colorful rings by stacking them in the correct order. With hundreds of levels and intuitive gameplay, it's a great way to train your brain and unwind.

**Highlights:** Logic and color ring sorting, Hundreds of progressive levels, Simple drag and stack gameplay, Brain training and strategy development, Relaxing atmosphere

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertisement | $0.99 | one-time |


### Piggy Invasion

[App page](https://appshunter.io/ios/app/piggy-invasion/id6748685093)

Pilot a combat spaceship to defend the galaxy from invading space piglets. Dodge enemy fire, collect power-ups, and battle through levels with increasing difficulty. Enjoy classic shoot 'em up action with modern graphics and sound, playable offline or in augmented reality.

**Highlights:** Classic shoot 'em up gameplay, Varied enemy types, Explosive power-ups, 99-level progression system, Global leaderboards, Augmented Reality mode, Offline play

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Levels | $1.99 | one-time |


## Frequently asked questions

### Is Sort It Stack 3D free?

Sort It Stack 3D is free to download, with in-app purchases available.

### Is Piggy Invasion free?

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

### Which has better reviews, Sort It Stack 3D or Piggy Invasion?

Sort It Stack 3D is rated higher. Sort It Stack 3D averages 3.5 out of 5 from 2 ratings, while Piggy Invasion averages 1.0 from 1 ratings.

### Do Sort It Stack 3D or Piggy Invasion have ads?

Sort It Stack 3D shows ads; Piggy Invasion does not.

### Which is updated more often, Sort It Stack 3D or Piggy Invasion?

Sort It Stack 3D ships an update every 34 months, and Piggy Invasion every 3 months. Most recently, Sort It Stack 3D was updated on September 21, 2026 and Piggy Invasion on October 15, 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.*