Terms of Use

App Keigo 敬語 · version 1.0 · last updated: 4 September 2026

What you get

Keigo 敬語 is an educational app about the Japanese honorific register. Levels 1 and 2 are free in full. A single non-consumable in-app purchase unlocks levels 3, 4 and 5 and covers material added to them later. There is no subscription and no recurring charge.

Purchases and refunds

Purchases are processed by Apple under the App Store terms. Refunds are handled by Apple, not by the developer. "Restore purchases" in Settings re-checks your entitlement on any device signed in with the same Apple Account.

The learning content

The scenes, example sentences, translations and explanations are original work and are provided for personal study. They may not be reproduced, redistributed or used to train machine-learning models.

The honorific register is genuinely disputed among native speakers of Japanese — that is a fact about the material, not an excuse. Keigo follows 文化庁「敬語の指針」(2007) and says so plainly where usage is contested. Judging whether a given situation calls for a particular form is yours to do, not the app's. The five levels describe how the material is ordered for learning; they are not examination levels, and the app is not affiliated with, authorized by or endorsed by any body that administers a Japanese-language examination.

No warranty

The app is provided "as is". While the content is checked carefully and validated automatically, no guarantee is given that it is free of error. The developer is not liable for damages arising from its use.

Your data is your responsibility

Progress is stored on your device only. Deleting the app deletes your progress with it.