UnderLine - Live Typing Chat
5mm Social Networking iPhoneiPadiPod touch
UnderLine - Live Typing Chat is a free Social Networking app for iPhone and iPad by 5mm. Requires iOS 15.6. Updated October 29, 2026.
- Price
- Free
- on the App Store
- Size
- 67 MB
- Age 17+
- Updated
- Oct 29
- 2026 · v2.2.2
Screenshots
About UnderLine - Live Typing Chat
UnderLine is a one-to-one messaging app that lets your conversation partner see your words in real time while you type. Unlike conventional messaging apps, where the other person sees your words only after you tap Send, UnderLine lets the conversation begin from the moment you start typing. When you delete draft text, the change is also reflected on the other person's screen. This makes it possible to share the rhythm of a conversation and the way words take shape, even when you are apart. Key features - Real-time display of text while it is being typed - Simple one-to-one messaging - Add friends using public IDs or QR codes - See in your conversation list when someone is typing - Search your contacts, and your conversation list by name or message - Mute notifications, pin conversations, or hide them from your list - Push notifications for new messages - Blocking, reporting, and in-app account deletion - Encrypted device-to-device transfer using a QR code - Encrypted iCloud backup and restoration Message bodies and live-typing text are end-to-end encrypted. Push notifications never include message content. Important notes - Live typing is visible while the other person has the same conversation open. Because text may be seen before you tap Send, do not type anything you do not want the other person to see. - Enable notifications to receive new-message alerts while the app is in the background or closed. Message content is not shown in notifications.
What’s new
Version 2.2.2 · Updated October 29, 2026
• Tap URLs in messages to open them • Added a Show password option to password fields • Sending feels faster: your message appears at once in a faint style while it is sent • Added a red "i" to the message list that explains how the app keeps messages safe (can be turned on or off in Settings) • Notices at the bottom of the screen now have an × button to close them • Reply quotes now show up to three lines • Tap a full-screen photo to show or hide its controls • Cancel an expired sign-in method linking attempt and start again from login • Fixed live typing not resuming after signing in again and confirming the other person's changed encryption information
App privacy
The developer, 5mm, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Email Address, Name, Phone Number
- User Content: Emails or Text Messages, Photos or Videos, Customer Support, Other User Content
- Identifiers: User ID, Device ID
- Diagnostics: Other Diagnostic Data
Used for: App Functionality
Alternatives to UnderLine - Live Typing Chat
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| UnderLine - Live Typing Chat | – | Free | October 29, 2026 | |
| shaunSocial | – | Free | Sep 14, 2026 | Compare |
| Gsaram - Find People | – | Free | Oct 11, 2026 | Compare |
| Convo: Location Based Chatting | 5.0 / 5 (3) | Free | May 16, 2024 | Compare |
| Kin: Your Friends' Daily Lives | 5.0 / 5 (1) | Free | Aug 28, 2026 | Compare |
| ひまんぐーす | – | Free | Oct 2, 2026 | Compare |
| YoIM | 5.0 / 5 (7) | Free | Jun 24, 2024 | Compare |