# Comiru入退室 vs Study Doctor for staff

The clearest difference is update cadence: Comiru入退室 at every 3 months against Study Doctor for staff's every 22 months. Study Doctor for staff's advantage is iOS requirement (12.2 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Comiru入退室 ships an update every 3 months, Study Doctor for staff every 22 months. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Comiru入退室 | Study Doctor for staff |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 22 months |
| Monetization | Free | — |
| Size | 65 MB | 69 MB |
| Requires iOS | 15.1 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [POPER Inc.](https://appshunter.io/developer/1219573109) | [KEC Corporation](https://appshunter.io/developer/1756035508) |

## What reviewers say

### Comiru入退室

[App page](https://appshunter.io/ios/app/comiru/id1485506935)

This app streamlines school operations by providing a fast and easy way for students to check in and out. It integrates with a school management system to improve efficiency and reduce wait times.

**Highlights:** Fast student check-in/out, Reduces student queues, Easy to install and use, Integrates with school management system

**Features:** Vision Pro support

**In-app purchases:** none


### Study Doctor for staff

[App page](https://appshunter.io/ios/app/study-doctor-for-staff/id6523417723)

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

**In-app purchases:** none


## Frequently asked questions

### Is Comiru入退室 free?

Comiru入退室 is free to download, with no in-app purchases.

### Is Study Doctor for staff free?

Study Doctor for staff is free to download, with no in-app purchases.

### Do Comiru入退室 or Study Doctor for staff have ads?

Neither Comiru入退室 nor Study Doctor for staff shows ads.

### Which is updated more often, Comiru入退室 or Study Doctor for staff?

Comiru入退室 ships an update every 3 months, and Study Doctor for staff every 22 months. Most recently, Comiru入退室 was updated on October 7, 2026 and Study Doctor for staff on October 17, 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.*