TrainTT vs whatup
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。
whatup
A secure, self-hosted chat system prioritizing privacy. Communicate instantly with text, voice, images, and stickers. Connect with new people in group chats and enjoy voice/video calls with end-to-end encryption.
- Self-hosted social chat system
- Instant messaging (text, voice, images, stickers)
- Group chats for meeting new friends
- Voice and video calls
- End-to-end encryption
- Personalized profiles
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1.A self-hosted social chat system for ultimate security and privacy. 2.Instant Messaging-Send text, voice, images, and stickers for a lively conversation! 3.Group Chats-Join trending topics and meet exciting new friends. 4.Voice & Video Calls-Enjoy real-time conversations anytime, anywhere. 5.Privacy & Security- End-to-end encryption keeps your chats safe and private. 6.Personalized Profiles-Customize your profile and express your true self.
Screenshots
Verdict
The clearest difference is update cadence: TrainTT at every 3 days against whatup's every 9 days. TrainTT also leads on iOS requirement (12.0 vs 15.6). 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, whatup every 9 days. The most recent releases landed on September 14, 2026 and September 19, 2026 respectively.
| Parameter | TrainTT | whatup |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (3 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 49 MB | 51 MB |
| Age rating | 17+ | 17+ |
| Developer | Qian Yun Network Service Co., Ltd. | whatup |
In-app purchases
TrainTT
No in-app purchases
whatup
No in-app purchases
