TrainTT vs S
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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。
S
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im聊天软件，通用的即时通讯和实时音视频组件，安全可控高效易用低成本的IM，沟通不再是难事。
Screenshots
Verdict
The clearest difference is update cadence: TrainTT at every 3 days against S'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.
TrainTT ships an update every 3 days, S every 5 weeks. The most recent releases landed on September 14, 2026 and September 25, 2026 respectively.
| Parameter | TrainTT | S |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 49 MB | 47 MB |
| Age rating | 17+ | 4+ |
| Developer | Qian Yun Network Service Co., Ltd. | 军 王 |
In-app purchases
TrainTT
No in-app purchases
S
No in-app purchases
