# CircSim

> Circulatory system simulator for education and waveform study. (iPhone/iPad app by TARO KUMANDA.)

- Source: https://appshunter.io/ios/app/circsim/id6759235234 (this page in markdown: same URL + `.md`)
- Developer: [TARO KUMANDA](https://appshunter.io/developer/1877582069)
- Category: Education, Medical
- Price: $5.99
- Age rating: 4+
- Requires: iOS 13.0 · 23 MB
- Languages: American English
- Released: 2026-02-19
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/circsim/id6759235234/reviews.md

## What is CircSim?

様々なパラメータを動かしながら循環をシミュレートできます。循環・波形の勉強に最適です。
以下のものが表示できます。
- 大動脈圧波形
- 左室/左房圧波形
- 肺動脈圧波形
- 右室/右房圧波形
- 流速波形(僧帽弁、三尖弁、肺静脈、肝静脈）
- 左房・左室・右房・右室のPV loop
- HRや静脈圧を変化させた際のCO曲線
- 心膜コンプライアンス曲線（これを調整して心タンポナーデのようなシミュレーションも可能）

＜教育的な機能＞
- 左心系のみモードも搭載し、よりシンプルなモデルでのシミュレーションも可能なため教育などにご活用いただけます。

＜様々な保存機能＞
- お好きなパラメータ設定およびレイアウト設定をプリセットとして保存することができます。
- PV loop比較などのために描画保存が6つまで可能です。

## Key features

- Circulatory system simulation
- Pressure waveform display
- Flow waveform display
- PV loop visualization
- Left-heart-only mode
- Parameter preset saving
- Drawing save for comparison

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/circsim/id6759235234/reviews.md

### 5/5 — 同志です

*2026-02-20*

若手麻酔科医です。心疾患合併患者のICU管理をしたり、心臓血管麻酔を担当します。こういうアプリを待ってました。術前術後の血行動態把握に最適です。むしろ安すぎる気もします。本当にありがとうございます。

## Frequently asked questions about CircSim

### What can CircSim simulate?

CircSim allows you to simulate various aspects of the circulatory system, including aortic pressure waveforms, left ventricular/atrial pressure waveforms, flow waveforms from different valves and veins, and PV loops for chambers. It also enables simulation of cardiac tamponade by adjusting pericardial compliance.

### Is CircSim suitable for beginners?

Yes, CircSim includes a 'left-heart-only mode' which provides a simpler model for simulation. This makes it suitable for educational purposes and for users who prefer a less complex starting point.

### Can I save my simulation settings in CircSim?

Absolutely. CircSim allows you to save your preferred parameter settings and layout configurations as presets. You can also save up to six drawings for comparison, such as for PV loop analysis.

### What devices does CircSim support?

CircSim is available on iPhone, iPad, and iPod devices, making it accessible for a wide range of Apple users.

### How often is CircSim updated?

The latest version, 1.0.2, was released on March 3, 2026. The app was initially released on February 19, 2026, indicating recent development activity.

### What is the age rating for CircSim?

CircSim has an age rating of 4+, making it appropriate for a broad audience, including younger learners interested in the subject matter.

### Does CircSim have ads?

No, CircSim does not contain advertisements. It is a paid application designed for focused learning and simulation without interruptions.

### How does CircSim help with learning physiology?

CircSim aids learning by providing an interactive platform to manipulate physiological parameters and observe their effects on circulatory dynamics. The ability to visualize waveforms and PV loops, along with the simplified mode, enhances understanding of complex concepts.

## Version history (last 3 releases)

### 1.0.2 — 2026-03-03

CO-HR曲線の描画保存バグを修正しました。

### 1.0.1 — 2026-02-23

CO-HR曲線が計算中で止まるバグを修正しました

### 1.0 — 2026-02-20

No release notes.

## More apps by TARO KUMANDA

- [はじめての心臓麻酔](https://appshunter.io/ios/app/id6760296938)

All apps by TARO KUMANDA: https://appshunter.io/developer/1877582069

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*