密锁 vs TrainTT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
密锁
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---密锁特色功能--- 截屏提醒：单聊/群聊如果有人截屏，系统会提示有人已截屏。 打扫消息：单聊/群聊支持打扫消息，您的消息记录一键清除，永不保留。 强大群控：群成员保护、匿名群聊、群员禁言、置顶群消息等丰富群管理功能。 好友管理：可清理不活跃好友和将自己删除或拉黑的好友。 不获取通讯录权限：密锁不获取用户通讯录信息，保护用户通讯录隐私安全。
TrainTT
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1.安全加密： 使用端到端全方位算法保障于安全防范。 2.简介体验：专注即时通讯，提供稳定的核心基础功能。 3.保护隐私:云端不保存聊天记录，可关闭已读回执，同时提供阅后即焚和销毁账号等保护用户隐私。 4.聊天: 提供文本，语音，图片，视频，文件，表情等聊天方式。
Screenshots
Verdict
The clearest difference is update cadence: TrainTT at every 3 days against 密锁's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
密锁 ships an update every 5 weeks, TrainTT every 3 days. The most recent releases landed on October 18, 2026 and October 1, 2026 respectively.
| Parameter | 密锁 | TrainTT |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 58 MB | 49 MB |
| Age rating | 4+ | 17+ |
| Developer | Shenzhen TianHaoRong Network Information Technology Co., Ltd. | Qian Yun Network Service Co., Ltd. |
In-app purchases
密锁
No in-app purchases
TrainTT
No in-app purchases
