StreamSim is a practice-only live-stream simulator for new streamers. Rehearse going live in front of a realistic, reactive chat — all generated on your device. No viewers, no login, no platform watching.
Going live the first time is terrifying — empty chat, awkward silence, no idea what to say. StreamSim lets you get the reps in first. A believable chat scrolls, reacts, and hypes you up, so by the time you hit "Go Live" for real, it already feels normal.
StreamSim recreates the look and feel of the vertical live formats creators know — without using any logos, brand names, or trademarked assets.
No real audience can see you, because there isn't one. Every message, name, and viewer count is generated on your phone — so you can fumble, restart, and try again with zero stakes.
What StreamSim is — and what it isn't.
StreamSim is a practice-only live-stream chat simulator. It generates a realistic, reactive chat feed — complete with platform skins that match Twitch, TikTok, YouTube, Instagram, Facebook, and Kick — so you can rehearse talking to "chat" on your device, privately, before you ever go live to a real audience. No viewers, no broadcast, no account.
No. StreamSim is 100% on-device — nothing is ever sent anywhere. There's no audience, no platform connection, and no one watching. It's a private rehearsal space so you can practice freely without any pressure.
Very. StreamSim's chat engine runs a live intensity state machine — chat drifts from quiet to normal to busy to full hype depending on what's happening in your session. Hit the Big Win button to trigger a hype burst, or Big Fail to watch chat react. Username styles, message templates, and chat pace all adapt to the intensity level, so it feels like a real stream, not a loop.
Anyone who wants to get comfortable on camera before going live. StreamSim is especially useful for new streamers who freeze up reading chat, creators switching to a new platform and learning a new audience vibe, or anyone who wants reps without the public pressure of a real stream.
StreamSim is currently in development and coming soon from UpTrended. Add yourself to the notify list on this page to be among the first to know when it launches on iOS.
StreamSim is in development. Check back soon — or explore what we've already shipped.