There's more great content on YouTube than anyone has time to watch. Seimai gives you the essence in minutes, lets you save the ideas worth keeping, and helps you discover more videos through what others have found.
Summaries
A 3:03:33 video is a big ask. A 9:54 read is easy. Skim first — then watch what catches your attention, with the time to actually do it.
Every summary is organized into sections you can scan at a glance. Read just the headlines to get the picture, expand a section when something catches your interest, or dive into the full detail in the YouTube video. You choose how deep to go.
Add your favourite YouTube channels and Seimai does the rest. Every time a new video is published, it gets summarized to your preferences and delivered to your feed.
No need to check back, no need to decide what to watch. The ideas come to you.
Multiple channels cover the same stories with overlapping takes. Instead of watching each one, get the core ideas from all of them — and quickly spot where sources diverge or add something unique.
A summary gives you the picture. But sometimes an idea catches your attention and you want more — context, nuance, the speaker's exact argument.
Ask the integrated AI agent anything about the video. It knows the full transcript and can search the web for additional context. The summary is the starting point, not the ceiling.
Seimai translates every summary into your language — Spanish, French, German, Italian, Portuguese, Japanese, Korean, Chinese, Russian, Arabic, Hindi.
The video stays in its original form. You get the ideas in the language you think in best.
Knowledge base
Select any sentence that resonates and save it as a private note in one tap. Add your commentary to capture your own thoughts.
Notes get organised by topic automatically. Your library grows with you — every saved idea easy to find months later.
Toggle a note public and it joins the shared feed. Your discoveries become someone else's starting point.
Discover
Browse public notes from other readers. The quotes they pick are signal — a quick way to find videos you wouldn't have found on your own.
Every note jumps back to the source. Read the summary for context or watch the video for a deep dive.
When someone's picks consistently resonate, follow them. Their next highlight lands in your feed — a curated trail through people whose judgement you trust.
Seimai (精米) is the Japanese art of polishing rice for premium sake production — removing the outer layers to extract the essence within. We do the same: distill the hours into ideas, save the ones that matter the most to you, discover the ones that others considered worth sharing.