Privacy Policy
Sprout Street · 小芽街 中文
Effective date: November 7, 2026
Sprout Street is an app for learning about investing with pretend money. It is made by xiaolu zhou ("we"). This policy explains what we collect, why, and the choices you have. We do not sell your data, we do not show ads, and we do not track you across other apps or websites.
What we collect
| Data | Why we need it |
|---|---|
| Email address and password (the password is stored only as a secure hash by our login provider) | To create your account, sign you in, verify your email and reset your password. |
| Account ID and nickname | To run your account. Your nickname is shown to other members of leagues you join. |
| Birth month and year | Only to check that you are 13 or older. We do not ask for your exact birthday. |
| Your helper (mascot), its name, and your language | To personalise the app. |
| Your pretend trades, holdings and the reasons you choose for a buy | To run the practice portfolio. |
| Lesson progress, XP, badges, mini-game scores and predictions | To track your learning and rewards. |
| Leagues you create or join, cheers you send, and users you block or report | To run leagues with friends and keep them safe. |
We do not collect your real name, phone number, address, photos, contacts, location, payment details or advertising ID. There is no real money in the app.
A few small things are stored only on your phone and never sent to us, such as which tutorial videos you have watched.
Who can see your data
- Other users can see only your nickname, helper, level and your pretend results inside leagues you have joined. They cannot see your email or birth date.
- Supabase hosts our database and sign-in. It processes data only on our behalf. Its servers may be located outside your country.
- Market data: our server fetches stock prices from Finnhub. Finnhub never receives any information about you. Company logos are loaded from the market-data provider's image servers, which receive a normal web request (such as your IP address) but no account information.
- We share data with authorities only if the law requires it.
We do not use any advertising, analytics or tracking tools.
Keeping and deleting your data
We keep your data while your account exists. You can delete your account at any time in the app: Me → Delete account. This permanently deletes your account and all of the data listed above from our database. Copies in our hosting provider's routine backups are removed as those backups expire.
You can also email us to see, correct or delete your data.
Children
Sprout Street is for people aged 13 and older. Sign-up asks for a birth month and year, and people under 13 cannot create an account. If we learn that a child under 13 has an account, we will delete it. Parents can contact us at the address below.
Safety
Nicknames and league names are filtered for offensive words. You can report or block another user from their card in a league. We review reports and may remove names or accounts that break our rules.
Not financial advice
Everything in Sprout Street uses pretend money for learning and fun. Nothing in the app is investment advice, and you cannot buy or sell real stocks through it.
Changes and contact
If we change this policy, we will update the date above and, for important changes, tell you in the app.
Questions or requests: xiaolufile@gmail.com
隐私政策（中文）
生效日期：2026 年 11 月 7 日
小芽街（Sprout Street）是一个用虚拟资金学投资的 App，由 xiaolu zhou（下称"我们"）开发。我们不出售你的数据，不放广告，也不跨 App 或网站追踪你。
我们收集什么
- 邮箱和密码：用于注册、登录、验证邮箱、找回密码。密码只以加密哈希的形式保存在登录服务里。
- 账号 ID 和昵称：昵称会显示给你所在联赛的其他成员。
- 出生年、月：只用来确认你满 13 岁，不收集具体日期。
- 小助手、它的名字、语言：用于个性化。
- 虚拟交易、持仓、买入理由：用于练习账户。
- 课程进度、XP、徽章、小游戏成绩、预测：用于记录学习和奖励。
- 你建立或加入的联赛、打气记录、你屏蔽或举报的用户：用于联赛和安全。
我们不收集真实姓名、电话、地址、照片、通讯录、位置、付款信息或广告标识。App 里没有真钱。看过哪些教学视频这类小记录，只存在你的手机上，不会上传。
谁能看到
- 其他用户只能在同一个联赛里看到你的昵称、小助手、等级和虚拟收益，看不到你的邮箱和出生年月。
- Supabase 为我们托管数据库和登录，只按我们的要求处理数据，服务器可能不在你所在的国家。
- 行情由我们的服务器从 Finnhub 获取，Finnhub 拿不到你的任何信息。公司 logo 从行情服务商的图片服务器加载，对方只会收到普通的网页请求（例如 IP 地址），收不到账号信息。
- 只有法律要求时，我们才会向有关部门提供数据。
我们不使用任何广告、统计或追踪工具。
保存和删除
账号存在期间，我们保存上述数据。你可以随时在 App 里「我」→「删除账号」，这会从我们的数据库里永久删除账号和以上全部数据；托管服务商的例行备份会在到期后自然清除。也可以写信给我们，查看、更正或删除你的数据。
儿童
小芽街面向 13 岁及以上的用户。注册时会询问出生年月，不满 13 岁不能注册。如果发现有 13 岁以下的账号，我们会删除。家长可以通过下面的邮箱联系我们。
安全
昵称和联赛名会过滤不当用词。你可以在联赛的成员卡片上举报或屏蔽其他用户。我们会处理举报，并可能删除违规的名字或账号。
不构成投资建议
小芽街里的一切都使用虚拟资金，只用于学习和娱乐，不构成任何投资建议，也不能通过它买卖真实的股票。
变更和联系
如果政策有变，我们会更新上面的日期；重要变更会在 App 里告诉你。问题或请求请写信到 xiaolufile@gmail.com。