# Stacker vs PhosphorX

The clearest difference is review sentiment: PhosphorX at 100% against Stacker's 50%. PhosphorX also leads on rating (5.0 vs 3.3) and ads (none vs shown). Stacker's advantage is ratings volume (12 vs 2). 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.

PhosphorX holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Stacker has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Stacker's written reviews are positive against 100% of PhosphorX's.

Stacker ships an update every 8 months, PhosphorX every 2 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Stacker | PhosphorX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (12 ratings)](https://appshunter.io/ios/app/stacker-the-impossible-48/id1035391938/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/phosphorx/id6795330551/reviews)** |
| Number of ratings | **12** | 2 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Ad-supported | **Free** |
| Size | 63 MB | 3 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alessandro Salvioni](https://appshunter.io/developer/981466908) | [Dillon Blake](https://appshunter.io/developer/6792988370) |

## What reviewers say

### Stacker

[App page](https://appshunter.io/ios/app/stacker-the-impossible-48/id1035391938)

A challenging tap-to-stack game where players aim to build towers by placing squares precisely. Reach the top of each stack to complete the game. It's designed to be difficult but fun.

**Highlights:** Tap to place squares, Build towers vertically, Complete all stacks to finish, Challenging gameplay, Simple controls

**Features:** macOS Compatibility

**In-app purchases:** none


### PhosphorX

[App page](https://appshunter.io/ios/app/phosphorx/id6795330551)

This reflex arcade game challenges players to tap or swipe based on gate color and direction. Score is banked only at gold gates, creating a risk-reward dynamic. Hesitation accelerates the game, leading to a swift end.

**Highlights:** Risk/reward "bank it" scoring, Tap and swipe controls, Escalating drift mechanic, Haptic feedback, Game Center leaderboards, Offline play, Minimalist aesthetic

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

**In-app purchases:** none


## Frequently asked questions

### Is Stacker free?

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

### Is PhosphorX free?

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

### Which has better reviews, Stacker or PhosphorX?

PhosphorX is rated higher. Stacker averages 3.3 out of 5 from 12 ratings, while PhosphorX averages 5.0 from 2 ratings.

### Do Stacker or PhosphorX have ads?

Stacker shows ads; PhosphorX does not.

### Which is updated more often, Stacker or PhosphorX?

Stacker ships an update every 8 months, and PhosphorX every 2 months. Most recently, Stacker was updated on November 2, 2026 and PhosphorX 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.*