# 1D | 日本最大級の歯科医療メディア vs doctorbook（ドクターブック）

1D | 日本最大級の歯科医療メディア and doctorbook（ドクターブック） are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

1D | 日本最大級の歯科医療メディア ships an update every 3 weeks, doctorbook（ドクターブック） fortnightly. The most recent releases landed on October 26, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 1D | 日本最大級の歯科医療メディア | doctorbook（ドクターブック） |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 62 MB | 40 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [1D inc.](https://appshunter.io/developer/566809181) | [Doctorbook](https://appshunter.io/developer/1504193261) |

## What reviewers say

### 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


### doctorbook（ドクターブック）

[App page](https://appshunter.io/ios/app/doctorbook/id6749556014)

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

**In-app purchases:** none


## Frequently asked questions

### 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.

### Is doctorbook（ドクターブック） free?

doctorbook（ドクターブック） is free to download, with no in-app purchases.

### Do 1D | 日本最大級の歯科医療メディア or doctorbook（ドクターブック） have ads?

Neither 1D | 日本最大級の歯科医療メディア nor doctorbook（ドクターブック） shows ads.

### Which is updated more often, 1D | 日本最大級の歯科医療メディア or doctorbook（ドクターブック）?

1D | 日本最大級の歯科医療メディア ships an update every 3 weeks, and doctorbook（ドクターブック） fortnightly. Most recently, 1D | 日本最大級の歯科医療メディア was updated on October 26, 2026 and doctorbook（ドクターブック） on October 16, 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.*