# EmboRatio vs 医師当直表

The clearest difference is review sentiment: EmboRatio at 100% against 医師当直表's 30%. 医師当直表's advantage is iOS requirement (12.1 vs 15.4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EmboRatio ships an update every 4 months, 医師当直表 every 6 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | EmboRatio | 医師当直表 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 30.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | — |
| Size | 1 MB | 9 MB |
| Requires iOS | 15.4 | **12.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Masaaki Hirata](https://appshunter.io/developer/942972055) | [Keiji Matsui](https://appshunter.io/developer/365287272) |

## What reviewers say

### EmboRatio

[App page](https://appshunter.io/ios/app/emboratio/id1204239972)

Calculate the necessary coil length for aneurysm embolization. This tool also computes the current embolic rate and lists available coils in Japan.

**Highlights:** Coil length calculation for aneurysms, Embolic rate calculation, List of available coils in Japan, Medical calculation tool

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

**In-app purchases:** none


### 医師当直表

[App page](https://appshunter.io/ios/app/id1447381231)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EmboRatio free?

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

### Is 医師当直表 free?

医師当直表 is free to download, with no in-app purchases.

### Do EmboRatio or 医師当直表 have ads?

Neither EmboRatio nor 医師当直表 shows ads.

### Which is updated more often, EmboRatio or 医師当直表?

EmboRatio ships an update every 4 months, and 医師当直表 every 6 months. Most recently, EmboRatio was updated on November 2, 2026 and 医師当直表 on November 2, 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.*