中文
一、服务说明
Twintrail（轨迹陪伴打卡，以下简称“本服务”）是由 TickerLocus（以下称“我们”）提供的习惯打卡与关系陪伴应用：你可以在本应用中记录每日打卡，与一名指定的关系对象（情侣/爱人/兄弟/闺蜜/知己等，合称“搭档”）互相见证，并参与全球连续打卡排行榜。
本服务以“你与搭档互相监督、每天各打卡一次”为基本规则。连续打卡天数的计算以打卡行为发生的本地日历日为准（见第四条）。
二、账号注册与登录
- 本应用仅支持“通过 Apple 登录”注册/登录。使用即表示你确认已年满 14 周岁（不满 14 周岁须在监护人同意并指导下使用）；
- 同一时间每个账号只允许存在一名搭档。建立绑定需对方同意；主动解除绑定后，主动方 24 小时内不得再次发起或接受绑定（高级会员除外）；
- 你的账号凭证、登录状态由 Apple 管理。请妥善保管你的设备与 Apple 账号；因账号被盗用或密码泄露造成的损失，按 Apple 及本协议相关规定处理；
- 你有义务保证账号下行为合法合规，不得转让、出借账号，不得冒用他人身份注册。
三、绑定与解除
- 绑定：双方各自持有唯一绑定码，一方向另一方发起绑定邀请，对方同意后建立关系；绑定关系建立后，双方可互相看到对方的昵称、头像与打卡状态。
- 解除：任何一方可主动解除绑定。解除后历史打卡记录由双方各自保留；被解除方不受冷却限制，可立即重新绑定。
- 注销：账号注销将使你从排行榜与可绑定列表中下线并解除现有绑定关系（你的搭档会收到通知）；详见第十条。
四、打卡规则与连续天数
- 打卡按你设备所在地的日历日计算，每天最多打卡一次，不可补打卡、不可预打卡；
- 单身用户：连续天数按你本人连续打卡天数计算；绑定关系中：双方同一天都完成打卡，共同连续天数增加一天；任一方漏打一天，双方共同连续天数从 1 重新计算；
- 排行榜数据每日自动同步，具体以应用内展示为准；
- 你理解并同意：因搭档未打卡导致的共同连续中断，系由搭档个人行为所致，非本服务故障，我们对此不承担责任。
五、会员服务
- 会员为一次性买断（非订阅），购买后永久有效，仅对你本人生效，不共享给关系搭档；
- 会员权益包括但不限于：主题颜色与主题背景全部解锁、预设头像与昵称修改不限次、上传相册照片作为自定义头像、解绑无冷却、领养虚拟宠物；
- 购买通过 App Store 完成，价格为应用内所示人民币金额（可因地区/活动调整）。如需退款，请按 App Store 的退款政策向 Apple 申请；
- 恢复购买：更换设备或重新安装后，可通过“恢复购买”按钮按 Apple 收据找回你的会员权益。
六、用户行为规范
你承诺在使用本服务时不从事以下行为：
- 利用系统漏洞、模拟请求、脚本等方式伪造打卡、刷取排行榜数据或实施其他作弊行为；
- 发布、上传含有违法、色情、暴力、歧视、人身攻击、侵犯他人权益或违反公序良俗的昵称、头像、宠物名称等内容；
- 冒充他人、虚构身份或进行欺诈；
- 侵犯他人知识产权、商业秘密或个人隐私；
- 干扰本服务正常运行、攻击服务端或其他违反法律法规的行为。
- 违反上述规范的，我们有权不经通知删除相关展示内容、暂停账号部分或全部功能，情节严重的将永久封禁，并保留追究法律责任的权利。
七、排行榜与公开信息
全球排行榜属于公开功能。你的昵称、头像、地区标签、关系形态与连续打卡天数将对本应用其他用户可见；绑定关系下，你与搭档的昵称/头像会成对展示。请勿在公开信息中填写真实姓名、联系方式、住址等敏感个人资料。
八、数据说明
- 打卡明细与统计默认仅保存在你的设备本地；卸载应用或清除本地数据将导致该类历史明细不可恢复；
- 云端仅保存为支持绑定、提醒、排行榜与会员跨设备生效所必需的摘要数据；
- 每日打卡提醒由系统本地通知实现，需要你授予通知权限；你可在系统设置中随时关闭。
九、免责声明
- 我们会尽力保证服务稳定，但服务可能因维护、升级、网络故障、第三方服务商异常等原因中断或变更；
- 你应自行判断并承担使用本服务的风险。在法律允许的最大范围内，我们对因不可抗力、网络故障、设备丢失等导致的打卡记录丢失或服务中断不承担责任；
- 本应用为习惯养成辅助工具，不构成任何医疗、心理或法律建议。
- 我们可根据经营需要中止或终止本服务的运营（包括从应用商店下架）。如决定终止，我们将提前至少 30 天在应用内公告；终止后你将无法登录或使用本服务，请提前自行导出或备份你的打卡记录。已购买的会员权益如因服务终止而无法继续使用，你可依据 App Store 的退款政策向 Apple 申请退款。你已知悉并同意，除上述安排外，不会就服务终止向我们主张其他赔偿或补偿。
十、注销
你可在“我的 → 关于与账户 → 账户安全”中申请注销账号。注销规则如下：
- 注销后，你的账号将从全球排行榜与可绑定对象列表中下线，现有绑定关系将被解除（对方会收到通知）；
- 注销将清除本机保存的全部本地数据；你的云端数据（资料、打卡摘要、会员权益、宠物等）将为你保留；
- 注销后 7 天内，同一 Apple 账号不能重新登录本应用；7 天期满后重新登录，账号与已购权益将自动恢复，但需重新建立绑定关系；
- 如你希望彻底删除数据，可在注销后 7 天届满且不再登录的前提下，通过文末联系方式提出删除请求，我们将在核实身份后协助处理。
十一、协议更新与法律适用
- 我们可能根据法律法规或业务需要更新本协议，更新后将在应用内公布并标注日期；重大变更将以显著方式提示。你继续使用本服务即视为接受更新后的协议；
- 本协议适用中华人民共和国法律。因本协议产生的争议，双方应友好协商解决；协商不成的，任何一方可向服务运营方所在地有管辖权的人民法院提起诉讼。
- 如本协议任何条款被认定为无效或不可执行，不影响其余条款的效力。
十二、联系我们
如对本协议有任何疑问或建议，请通过以下方式与我们联系：
- 联系邮箱：black.huaguofeng@foxmail.com（邮件主题请注明「Twintrail 协议咨询」）；
- 或使用应用内「我的」页菜单中的反馈渠道与我们联系。
ENGLISH
1. About the Service
Twintrail ("the Service") is a habit check-in and companionship app provided by TickerLocus ("we"). You can record a daily check-in, witness each other with one designated partner (couple/lover/brothers/sisters/confidant, together "partner"), and join the global streak leaderboard.
The basic rule is that you and your partner each check in once a day. Streak days are calculated by the local calendar day on which the check-in occurs (see Article 4).
2. Registration and Sign-in
- The App only supports Sign in with Apple. By using it you confirm you are 14 or older (under 14 requires a guardian's consent and guidance);
- Each account may have only one partner at a time. Pairing requires the other party's consent; after unpairing, the initiating side may not start or accept a pairing for 24 hours (Premium excluded);
- Your credentials and login state are managed by Apple. Please keep your device and Apple account safe; losses from account theft or password leakage are handled per Apple's rules and this Agreement;
- You must ensure lawful use of your account, and may not transfer or lend it, or register under someone else's identity.
3. Pairing and Unpairing
- Pairing: each side has a unique invite code. One sends an invitation; once accepted, the relationship is created and both can see each other's nickname, avatar and check-in status.
- Unpairing: either side may unpair. Your check-in history is kept by each side; the receiving side has no cooldown and may pair again immediately.
- Deletion: deleting your account removes you from the leaderboard and pairable list and ends the current pairing (your partner is notified); see Article 10.
4. Check-in Rules and Streaks
- Check-ins follow your device's local calendar day; at most one per day, with no back-filling or pre-filling;
- Single users: your streak counts your own consecutive days. When paired: if both check in on the same day, the shared streak increases by one; if either misses a day, the shared streak restarts from 1;
- Leaderboard data syncs automatically each day; what is shown in the App prevails;
- You understand and agree that a broken shared streak caused by your partner not checking in is due to your partner's own conduct, not a service failure, and we bear no liability for it.
5. Membership
- Membership is a one-time purchase (not a subscription), valid permanently, only for you and not shared with your partner;
- Benefits include but are not limited to: all theme colours and theme backgrounds unlocked, unlimited preset avatar and nickname changes, album photos as custom avatar, no unpairing cooldown, and adopting a virtual pet;
- Purchases are completed via the App Store at the price shown in the App (subject to regional/campaign adjustments). For refunds, please apply to Apple under its refund policy;
- Restore purchase: after changing devices or reinstalling, you can restore your benefits via the "Restore purchase" button using your Apple receipt.
6. User Conduct
You undertake not to engage in the following while using the Service:
- Using system vulnerabilities, simulated requests, scripts or similar to fake check-ins, inflate leaderboard data or commit other cheating;
- Posting or uploading nicknames, avatars, pet names or other content that is illegal, pornographic, violent, discriminatory, personally attacking, rights-infringing or contrary to public order;
- Impersonating others, fabricating identity or committing fraud;
- Infringing others' intellectual property, trade secrets or personal privacy;
- Interfering with the normal operation of the Service, attacking servers or other unlawful acts.
- If you breach the above, we may delete the content without notice, suspend part or all account functions, permanently ban serious offenders, and reserve the right to pursue legal liability.
7. Leaderboard and Public Information
The global leaderboard is a public feature. Your nickname, avatar, region tag, relationship type and streak days are visible to other users; when paired, your and your partner's nicknames/avatars are shown as a pair. Please do not put real names, contact details or addresses in public information.
8. Data Notes
- Check-in details and statistics are stored only on your device by default; uninstalling the App or clearing local data makes such history unrecoverable;
- The cloud stores only the summary data necessary for pairing, reminders, the leaderboard and cross-device membership;
- The daily reminder uses local system notifications and requires notification permission, which you can turn off anytime in system settings.
9. Disclaimer
- We strive to keep the Service stable, but it may be interrupted or changed due to maintenance, upgrades, network failures or third-party provider issues;
- You bear the risk of using the Service yourself. To the maximum extent permitted by law, we are not liable for loss of check-in records or service interruption caused by force majeure, network failure or device loss;
- The App is a habit-building aid and does not constitute medical, psychological or legal advice.
- We may suspend or terminate the operation of the Service (including removing it from app stores) as required by our business. If we decide to terminate, we will announce it in the app at least 30 days in advance; after termination you will no longer be able to sign in to or use the Service, so please export or back up your check-in records beforehand. If purchased membership benefits can no longer be used due to the termination, you may request a refund from Apple under the App Store refund policy. You acknowledge and agree that, apart from the arrangements above, you will not claim any other compensation from us in respect of the termination of the Service.
10. Account Deletion
You can apply for account deletion under "Mine → About & account → Account security". The rules are as follows:
- After deletion you are removed from the global leaderboard and pairable list, and the existing pairing is ended (your partner is notified);
- Deletion clears all local data on this device; your cloud data (profile, check-in summaries, membership benefits, pets) is kept for you;
- For 7 days after deletion the same Apple account cannot sign in; after 7 days signing in automatically restores your account and purchased benefits, but you will need to pair again;
- If you wish to erase your data completely, you may, after the 7-day period and without signing in again, request deletion via the contact details at the end; we will assist after verifying your identity.
11. Updates and Governing Law
- We may update this Agreement as required by law or business needs; updates will be published in the App with a date, and material changes will be highlighted. Continuing to use the Service means you accept the updated Agreement;
- This Agreement is governed by the laws of the PRC. Disputes shall be resolved through friendly negotiation; failing that, either party may bring a lawsuit before the competent people's court where the operator is located.
- If any provision is held invalid or unenforceable, the remaining provisions remain in effect.
12. Contact Us
If you have any questions or suggestions about this Agreement, please contact us:
- Email: black.huaguofeng@foxmail.com (please use "Twintrail Terms Enquiry" as the subject);
- or use the feedback channel in the "Mine" menu in the app.