# Respiratory System Trivia vs Learn Skeletal System

The clearest difference is price: Learn Skeletal System at $1.99 against Respiratory System Trivia's $2.99. Learn Skeletal System also leads on iOS requirement (8.0 vs 11.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Respiratory System Trivia costs $2.99 and Learn Skeletal System $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Respiratory System Trivia ships an update every 23 months, Learn Skeletal System every 33 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Respiratory System Trivia | Learn Skeletal System |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 23 months** | Every 33 months |
| Monetization | Paid | — |
| Size | 19 MB | 19 MB |
| Requires iOS | 11.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Gulsen CAKIR](https://appshunter.io/developer/644171910) | [Nurten PIRLI](https://appshunter.io/developer/1495958705) |

## What reviewers say

### Respiratory System Trivia

[App page](https://appshunter.io/ios/app/respiratory-system-trivia/id878651005)

Test your knowledge of the human respiratory system with this quiz app. It offers offline access, detailed statistics, and progress tracking to help students master the subject and improve exam performance.

**Highlights:** Offline access, Detailed statistics, Progress tracking, Multiple choice questions, Category-based quizzes, Searchable questions

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

**In-app purchases:** none


### Learn Skeletal System

[App page](https://appshunter.io/ios/app/learn-skeletal-system/id1503289845)

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

**In-app purchases:** none


## Frequently asked questions

### Is Respiratory System Trivia free?

Respiratory System Trivia costs $2.99, with no in-app purchases.

### Is Learn Skeletal System free?

Learn Skeletal System costs $1.99, with no in-app purchases.

### Do Respiratory System Trivia or Learn Skeletal System have ads?

Neither Respiratory System Trivia nor Learn Skeletal System shows ads.

### Which is updated more often, Respiratory System Trivia or Learn Skeletal System?

Respiratory System Trivia ships an update every 23 months, and Learn Skeletal System every 33 months. Most recently, Respiratory System Trivia was updated on October 6, 2026 and Learn Skeletal 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.*