UpMocker is a free fake chat, comment, and story generator — build mockups of messages, posts, comments, stories, and emails with platform-native detail, without sending anything real.
The coverage is what makes it usable for design work. More than 20 messaging apps are supported including WhatsApp, iMessage, Discord, and Telegram; five AI chat platforms including ChatGPT, Claude, Gemini, Grok, and Perplexity; plus eight social post types and eight comment types across Instagram, X, TikTok, and LinkedIn, and email mockups for Gmail, Outlook, and Apple Mail. Usernames, profile pictures, and timestamps are all editable, with a live preview.
Key Features
- 20+ chat apps — WhatsApp, iMessage, Discord, Telegram, and more.
- 5 AI chat platforms — ChatGPT, Claude, Gemini, Grok, Perplexity.
- Social posts and comments — 8 post types and 8 comment types.
- Email mockups — Gmail, Outlook, Apple Mail.
- Live preview editor — Editable message bubbles, timestamps, and participants.
- One-click PNG download — No signup required.
Who It’s For
Designers testing layouts, developers prototyping interfaces, and content creators who need a realistic screenshot for a presentation, mockup, or demo without staging a real conversation.
How It Works
- Pick a category — chat, posts, comments, stories, or email.
- Choose the specific app or platform.
- Customize the messages, names, avatars, and timestamps in the live editor.
- Download the PNG.
Free during the launch period, with no signup required.