# Human Immune System Quiz vs Learn Immune System

The clearest difference is price: Human Immune System Quiz at $1.99 against Learn Immune System's $2.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Human Immune System Quiz costs $1.99 and Learn Immune System $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Human Immune System Quiz ships an update every 43 months, Learn Immune System every 36 months. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Human Immune System Quiz | Learn Immune System |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 43 months | **Every 36 months** |
| Size | 17 MB | 16 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Coskun CAKIR](https://appshunter.io/developer/482066275) | [Nurten PIRLI](https://appshunter.io/developer/1495958705) |

## What reviewers say

### Human Immune System Quiz

[App page](https://appshunter.io/ios/app/human-immune-system-quiz/id1006635722)

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

**In-app purchases:** none


### Learn Immune System

[App page](https://appshunter.io/ios/app/learn-immune-system/id1502997625)

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

**In-app purchases:** none


## Frequently asked questions

### Is Human Immune System Quiz free?

Human Immune System Quiz costs $1.99, with no in-app purchases.

### Is Learn Immune System free?

Learn Immune System costs $2.99, with no in-app purchases.

### Do Human Immune System Quiz or Learn Immune System have ads?

Neither Human Immune System Quiz nor Learn Immune System shows ads.

### Which is updated more often, Human Immune System Quiz or Learn Immune System?

Human Immune System Quiz ships an update every 43 months, and Learn Immune System every 36 months. Most recently, Human Immune System Quiz was updated on October 16, 2026 and Learn Immune System 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.*