# LRTK vs 語ログ（カタログ）

LRTK and 語ログ（カタログ） 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.

LRTK ships an update weekly, 語ログ（カタログ） every 9 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | LRTK | 語ログ（カタログ） |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Size | 880 MB | 34 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [レフィクシア株式会社](https://appshunter.io/developer/1599841370) | [FPT Software Company Limited](https://appshunter.io/developer/1229331919) |

## What reviewers say

### LRTK

[App page](https://appshunter.io/ios/app/lrtk/id1641216786)

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

**In-app purchases:** none


### 語ログ（カタログ）

[App page](https://appshunter.io/ios/app/1on1/id6763236237)

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

**In-app purchases:** none


## Frequently asked questions

### Is LRTK free?

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

### Is 語ログ（カタログ） free?

語ログ（カタログ） is free to download, with no in-app purchases.

### Do LRTK or 語ログ（カタログ） have ads?

Neither LRTK nor 語ログ（カタログ） shows ads.

### Which is updated more often, LRTK or 語ログ（カタログ）?

LRTK ships an update weekly, and 語ログ（カタログ） every 9 days. Most recently, LRTK was updated on October 30, 2026 and 語ログ（カタログ） on October 28, 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.*