支持

KotoPlanet · 面向中文母语者的日语学习应用

常见问题

必须注册才能用吗？

不需要。不登录可以完整使用全部学习功能，数据保存在本机。登录的唯一作用是把学习进度同步到云端，方便换设备或多设备使用。

换手机了，进度怎么带走？

两种办法：

• 登录同步：在两台设备用同一邮箱登录，进度自动合并。
• 手动备份：我的 → 数据备份 → 导出，得到一个 JSON 文件；在新设备上用「导入」恢复。不联网也能用。

为什么下载包这么大？

应用把全部日语音频（一万多条真人级语音）打包进了安装包，这样你在地铁、飞机上完全离线也能学，播放没有任何加载等待。代价就是首次下载体积较大，建议在 Wi-Fi 下安装。装好之后使用过程不消耗流量。

收不到登录验证码？

• 先检查垃圾邮件 / promotions 分类。
• 验证码有有效期，过期请重新发送。
• 短时间内连续请求会触发限流，等几分钟再试。
• 仍然收不到，把你的邮箱写信告诉我们，我们帮你查。

AI 对话 / 发音评测提示额度已用完？

这些功能依赖第三方云服务，因此设有每日上限，到下一个自然日（UTC）自动恢复。朗读功能超额后会自动回退到系统语音，仍然可用。你可以在「我的 → 用量」里看到当前剩余额度。

跟读评测没有反应？

大概率是麦克风权限被拒绝了。到 iOS 设置 → KotoPlanet → 打开「麦克风」和「语音识别」。如果录音后全应用声音变小，退出应用重新进入即可恢复。

怎么删除账号？

我的 → 删除账号。这会永久删除你的账号本身和云端全部学习数据，同时清空本机数据，不可恢复。删除前建议先导出一份备份。

如果你只想清空学习进度但保留账号，用「我的 → 重置学习进度」。

遇到 AI 生成的不当内容怎么办？

在对话界面里对该条回复使用举报入口，或直接写信到上面的邮箱并附上截图。我们会处理。

复习安排是怎么算的？

应用使用间隔重复：答对的内容按 1 → 3 → 7 → 14 → 30 → 60 → 120 → 240 天逐级拉长复习间隔，答错则缩回来重新爬。「模糊」这一档只轻微回退，不当作彻底遗忘。模拟考试是自测温度计，不会因为一次考试失误就打乱你的复习节奏。

支持哪些设备？

• iOS App：需要 iOS 26 或更高版本，iPhone 与 iPad 均支持。
• 网页版：现代桌面与移动浏览器均可使用，功能与 App 一致。

相关页面

隐私政策 · 服务条款

Support

KotoPlanet — Japanese learning for native Chinese speakers

Frequently asked questions

Do I need an account?

No. Every learning feature works without signing in, with data stored on your device. Signing in only adds cloud sync, which is useful when you switch or use multiple devices.

How do I move my progress to a new phone?

• Sign in with the same email on both devices; progress merges automatically.
• Manual backup: Me → Data Backup → Export produces a JSON file. Use "Import" on the new device. Works entirely offline.

Why is the download so large?

The app bundles all Japanese audio (over ten thousand clips) into the installer, so you can study completely offline — on a train, on a plane — with zero playback latency. The trade-off is a large first download; install over Wi-Fi. After installation the app uses no data for normal study.

I'm not receiving the sign-in code

• Check your spam and promotions folders.
• Codes expire; request a new one if too much time has passed.
• Repeated requests in a short window trigger rate limiting. Wait a few minutes.
• Still nothing? Email us your address and we'll look into it.

"Quota reached" for AI dialogue or pronunciation assessment

These features depend on third-party cloud services and have daily limits that reset at the start of the next UTC day. Speech playback falls back to the system voice when over quota, so it keeps working. Current remaining quota is shown under Me → Usage.

Pronunciation assessment does nothing

Most likely microphone permission was declined. Go to iOS Settings → KotoPlanet and enable "Microphone" and "Speech Recognition". If overall app volume drops after recording, quit and reopen the app to restore it.

How do I delete my account?

Me → Delete Account. This permanently removes the account itself and all cloud learning data, and wipes local data. It cannot be undone. Export a backup first if you may want the data later.

To clear progress but keep the account, use Me → Reset Progress instead.

What if I see inappropriate AI-generated content?

Use the report control on that reply in the conversation screen, or email the address above with a screenshot. We will act on it.

How is the review schedule calculated?

The app uses spaced repetition. Correct answers stretch the interval along 1 → 3 → 7 → 14 → 30 → 60 → 120 → 240 days; wrong answers pull it back to rebuild. A "fuzzy" grade steps back only slightly rather than counting as a full lapse. The mock exam is a thermometer, not a driver — one bad exam will not disrupt your review rhythm.

Which devices are supported?

• iOS app: requires iOS 26 or later; iPhone and iPad both supported.
• Web: works in modern desktop and mobile browsers, with the same feature set.

Related

Privacy Policy · Terms of Service