Tsubu 粒粒 — 支持
一款面向 iPhone / iPad / Android 的 JLPT 日语单词记忆 App。每词一粒，日积月累。本页用于帮助、提问与反馈。
联系我们
最快的联系方式是邮件，我们通常在 1–2 个工作日内回复。
反馈问题时，请附上系统版本、设备型号和 App 版本号（设置 → 版本），有截图更好。
快速上手
- 选择目标级别（N5–N1）与每日新词量，App 会用记忆曲线（SRS）帮你安排学习与复习。
- 开始学习：小批学几个、当场测几个，答错的进错题补考，直到记牢。
- 多种练习：闯关挑战、模拟测验、模考（六种题型混排）、错词本、收藏夹。
- 听力磨耳朵：按级分节，「词→例句」循环播放，支持锁屏 / 后台播放，通勤路上磨耳朵。
- 专项：数量词、语法文型、语法闯关，按需练习。
常见问题
Tsubu 需要联网吗？
基本不用。学习、答题、发音、统计全部离线可用。App 启动时只会拉取一个小的内容更新文件（用于修正题目，单向下载、不传任何数据、失败就用内置版不受影响）。不收集任何数据、没有账号、没有存你数据的服务器——所有进度都留在你的设备上。详见隐私政策。
我的学习进度存在哪里？会丢吗？
存在你设备的本地存储里。卸载 App 会一并删除本地数据，所以重装前请先用「设置 → 数据备份」导出为文件保存好；装回后再导入即可恢复。
（Android）锁屏后听力播放被系统停掉了？
Tsubu 已按规范配置后台/锁屏播放，标准 Android 不会停。但部分手机的省电策略可能会限制后台运行。请给「粒粒」开启「后台运行 / 自启动 / 关闭电池优化」白名单——App 内「设置 → 发音与音效 → 后台播放」也有一键跳转设置的入口。iOS 不存在此问题。
单词读音 / 释义 / 例句有错怎么办？
素材准确性是我们的核心，已逐条人工 + 字典核对。若你仍发现疑似错误，请邮件告诉我们具体词条，我们会尽快修正。
Pro / 内容包怎么购买？
通过 App Store 或 Google Play 内购。购买与恢复由平台处理，我们看不到你的支付信息。
怎么彻底删除我的数据？
直接卸载 App，本地数据随之全部删除。我们不持有你的任何数据副本。
法务与参考
Tsubu 粒粒 — Support
A JLPT Japanese vocabulary app for iPhone / iPad / Android. One word at a time, every day. This page is for help, questions, and feedback.
Contact
The fastest way to reach us is by email. We typically respond within 1–2 business days.
When reporting an issue, please include your OS version, device model, and the app version (Settings → Version). Screenshots help.
Getting started
- Pick a target level (N5–N1) and a daily new-word count. The app uses spaced repetition (SRS) to schedule learning and reviews.
- Learn & test in small batches; missed words go to a quick retest until they stick.
- Practice modes: level challenges, mock tests, JLPT-format exams (six question types mixed), mistake book, favorites.
- Listening: by level, looped "word → example" playback, with lock-screen / background support for passive practice on the go.
- Specials: counters, grammar patterns, and grammar challenges.
FAQ
Does Tsubu need an internet connection?
Almost never. Learning, quizzes, pronunciation, and statistics all work offline. On launch the app fetches one small content-update file (to correct questions — a one-way download that sends no data; if it fails, the built-in content is used and nothing is affected). The app collects no data, has no account, and no server that stores your data — all progress stays on your device. See the Privacy Policy.
Where is my progress stored? Can I lose it?
It's stored locally on your device. Deleting the app removes the local data, so before reinstalling, export a backup file via Settings → Data backup, then import it back afterward.
(Android) Listening stops after the screen locks?
Tsubu is configured for background / lock-screen playback, and standard Android won't stop it. But some phones have aggressive power-saving that may stop background apps. Please allow "background running / auto-start / no battery optimization" for Tsubu — there's a shortcut in Settings → Audio → Background playback. iOS is not affected.
A reading / meaning / example looks wrong — what do I do?
Content accuracy is core to us and has been checked line by line against dictionaries. If you still spot a likely error, email us the specific entry and we'll fix it.
How do purchases work?
Pro and content packs are in-app purchases via the App Store or Google Play. Purchase and restore are handled by the platform; we never see your payment details.
How do I delete all my data?
Simply delete the app — all local data is removed with it. We hold no copy of your data.