# くちけん vs 1D | 日本最大級の歯科医療メディア

The clearest difference is update cadence: 1D | 日本最大級の歯科医療メディア at every 3 weeks against くちけん's every 9 months. くちけん's advantage is review sentiment (50% vs 30%) and iOS requirement (13.0 vs 15.0). 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.

くちけん ships an update every 9 months, 1D | 日本最大級の歯科医療メディア every 3 weeks. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | くちけん | 1D | 日本最大級の歯科医療メディア |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **50.0% of reviews** | 30.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 1 MB | 62 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Kiryushi Shikaishikai](https://appshunter.io/developer/513890180) | [1D inc.](https://appshunter.io/developer/566809181) |

## What reviewers say

### くちけん

[App page](https://appshunter.io/ios/app/id513890177)

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

**In-app purchases:** none


### 1D | 日本最大級の歯科医療メディア

[App page](https://appshunter.io/ios/app/1d/id1461470012)

Access a vast library of dental seminars and master courses from top clinicians and researchers. Learn efficiently with features like variable playback speed and slide search. Cancel anytime.

**Highlights:** Daily new dental seminars, 1,000+ dental seminars available, 14 fields, 100+ hours master courses, Variable playback speed, My list and slide search, Cancel anytime

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

**In-app purchases:** none


## Frequently asked questions

### Is くちけん free?

くちけん is free to download, with no in-app purchases.

### Is 1D | 日本最大級の歯科医療メディア free?

1D | 日本最大級の歯科医療メディア is free to download, with no in-app purchases.

### Do くちけん or 1D | 日本最大級の歯科医療メディア have ads?

Neither くちけん nor 1D | 日本最大級の歯科医療メディア shows ads.

### Which is updated more often, くちけん or 1D | 日本最大級の歯科医療メディア?

くちけん ships an update every 9 months, and 1D | 日本最大級の歯科医療メディア every 3 weeks. Most recently, くちけん was updated on October 9, 2026 and 1D | 日本最大級の歯科医療メディア on October 8, 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.*