OiSee / TERMS
Using OiSee
Using and purchasing OiSee
Updated: November 1, 2026
Apps covered
This page explains use and purchases for OiSee日本語 and OiSee中国語. Check the license agreement displayed in the App Store for the app’s licensing terms.
Learning materials
The materials are intended for language learning, with meanings, pronunciation, regional differences and examples. Please report corrections with the app name and the relevant word or sentence.
Trial and full unlock
A separate ¥600 non-consumable in-app purchase in Japan is planned for each app’s full unlock. There is no subscription. The Chinese app’s trial includes the first 10 words per course and 10 quiz answers in total. Check final prices, availability and features in the App Store and the app after release.
Purchases, restoration and refunds
Review the content and amount in Apple’s confirmation screen before purchasing. Use Restore Purchases in the relevant app for previously purchased content. Apple handles purchase history and refund requests.
Learning records
Learning records are stored on the device. Records may not transfer after deleting the app or changing devices. Restoring a purchase is separate from restoring learning records.
Content and audio sources
Some vocabulary information is used under its license. Source and license notices are available under About the Materials in the app. Chinese voice previews are synthesized with Kokoro v1.1-zh.
Contact
support@oisee.jp