# Pulmonary vs 4Kolors

The clearest difference is in-app purchases: 4Kolors at none against Pulmonary's 1. 4Kolors also leads on update cadence (every 3 days vs every 4 months) and iOS requirement (11.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Pulmonary sells 1 one-off in-app purchase. 4Kolors asks for nothing beyond the download.

Pulmonary ships an update every 4 months, 4Kolors every 3 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Pulmonary | 4Kolors |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/pulmonary/id1215076838/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 52 MB | 33 MB |
| Requires iOS | 16.4 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tommy Soereide Kjaer](https://appshunter.io/developer/1215076837) | [Le Huu Nghia](https://appshunter.io/developer/1073285125) |

## What reviewers say

### Pulmonary

[App page](https://appshunter.io/ios/app/pulmonary/id1215076838)

A challenging puzzle game that requires players to use past information to navigate obscured paths. Test your logic and problem-solving skills in this unique experience.

**Highlights:** Obscured path navigation, Information-based gameplay, Logic puzzles, Problem-solving challenges, Unique game mechanics

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 11 New Stages | $0.99 | one-time |


### 4Kolors

[App page](https://appshunter.io/ios/app/4kolors/id6443696605)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pulmonary free?

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

### Is 4Kolors free?

4Kolors is free to download, with no in-app purchases.

### Do Pulmonary or 4Kolors have ads?

Neither Pulmonary nor 4Kolors shows ads.

### Which is updated more often, Pulmonary or 4Kolors?

Pulmonary ships an update every 4 months, and 4Kolors every 3 days. Most recently, Pulmonary was updated on October 24, 2026 and 4Kolors on October 27, 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.*