Kaikou Terms of Use (incl. Subscription Terms)

Effective: 2026-11-05 · URL: https://kaikou.basion.wang/terms/en/ · Operated by Baichen Wang ("Basion", individual developer) · basionwang@gmail.com

1. Acceptance

By downloading or using Kaikou you agree to these Terms and to Apple's Licensed Application End User License Agreement. If you do not agree, do not use the app.

2. The service

Kaikou provides a keyboard, voice-to-text and translation. Online features rely on third-party AI providers and may be inaccurate, incomplete or unavailable. AI output may contain errors; check important text (legal, medical, financial, safety) before sending. Translations faithfully reflect what you say, including informal or strong language.

3. Your responsibilities

Use Kaikou lawfully. Do not use it to harass others, to process content you have no right to, or to attack, scrape, reverse-engineer or overload the service. You are responsible for what you send with the keyboard.

4. Free tier and fair use

The free tier includes unlimited on-device typing and daily limits on online features (currently 20 minutes of online voice and 30 translations per day). Kaikou Pro raises these limits (currently up to 1 hour of online voice per day and higher translation limits). Limits reset daily and may change with notice in the app. We may suspend accounts or devices used abusively.

5. Subscriptions (auto-renewable)

• Kaikou Pro Monthly: $1.99 per month. Kaikou Pro Yearly: $14.99 per year. Prices are in USD for the United States and may vary by region; the price shown in the app before purchase applies.
• Free trial: eligible new subscribers to the yearly plan get a 7-day free trial. Unless cancelled at least 24 hours before the trial ends, it converts to a paid yearly subscription and you will be charged $14.99.
• Payment is charged to your Apple ID account at confirmation of purchase (or at the end of the free trial).
• The subscription renews automatically for the same period and price unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the end of the current period.
• You can manage or cancel in iOS Settings → [your name] → Subscriptions. Cancellation takes effect at the end of the current period; there is no refund for the unused part of a period, except as required by law.
• Any unused portion of a free trial is forfeited when you purchase a subscription.
• Refunds are handled by Apple: https://reportaproblem.apple.com.
• Deleting the app or your Kaikou account does not cancel your subscription.
• Restore purchases on a new device in Settings → Kaikou Pro → Restore Purchases, or by signing in.

6. Accounts

Sign-in is optional (email one-time code). You can delete your account in the app at any time; this permanently removes your account data, and signing in again with the same email creates a new account.

7. Intellectual property and open source

The app is licensed, not sold. Open-source components (including the rime-ice dictionary under GPL-3.0 and Noto Serif SC under OFL 1.1) are governed by their own licenses, listed in Settings → Open-Source Licenses.

8. Disclaimer and limitation of liability

The service is provided "as is" without warranties to the extent permitted by law. To the maximum extent permitted by law, the developer is not liable for indirect or consequential damages, and total liability is limited to the amount you paid for Kaikou in the 12 months before the claim.

9. Changes and termination

We may update these Terms; material changes will be announced in the app. We may stop offering the service with reasonable notice; active subscribers will be told how to cancel.

10. Governing law

These Terms are governed by the laws of the State of California, USA, without regard to conflict-of-law rules.

11. Contact

basionwang@gmail.com