Eightify is built specifically for YouTube summaries and does that job well. SenseIT covers YouTube, TikTok, Instagram and Facebook, works from the iPhone share sheet, and translates into 33 languages, which matters if you watch content in a language you do not speak. If all you summarize is English YouTube, Eightify is a focused tool. If your feed is mixed, in platform and in language, SenseIT is the broader one.
The honest short version
- Pick Eightify if YouTube is where you live, you want a mature YouTube specific tool, and everything you watch is already in a language you understand.
- Pick SenseIT if you also watch TikTok, Reels or Facebook video, if you often hit videos in another language, or if you want the summary without copying links.
Platform coverage
This is the clearest difference. Eightify is a YouTube summarizer; its name and its whole design point at YouTube. SenseIT handles YouTube including Shorts, TikTok, Instagram Reels and Facebook videos through the same flow.
Whether that matters is entirely about your habits. Plenty of people genuinely only need YouTube, and for them a specialist is a reasonable choice.
Summarizing versus translating
Most tools in this category summarize. Fewer translate, and the two are not the same job. A summary of a Spanish video is still Spanish unless the tool translates as part of the process.
SenseIT transcribes, translates and summarizes in one pass, with 33 output languages. That is the feature it is actually built around. If every video you watch is already in your language, this difference is worth nothing to you. If you follow creators who post in another language, it is the whole reason to use it.
How you start a summary
Eightify follows the familiar route: bring it a YouTube link. SenseIT is built around the iOS share sheet, so you tap Share inside TikTok or YouTube and pick the app, without the link touching your clipboard. It is a small difference on paper and a noticeable one in daily use, because the friction of copying links is what stops people from summarizing at all.
Depth of output
Eightify produces key point style summaries of YouTube videos. SenseIT offers seven levels, from a two sentence recap through key takeaways and a narrative retelling to a full detailed breakdown, plus a chat that answers questions about the video afterwards. More modes are not automatically better; they are useful if you sometimes want a headline and sometimes want everything.
Maturity and track record
Eightify has been around longer and has an established user base on the App Store, with a solid rating across a few hundred reviews. SenseIT is newer and has far fewer ratings. That is a real consideration: a longer track record means more edge cases have been found and fixed. Weigh it honestly against the feature differences above.
Can you use both
Yes, and some people should. Both offer free usage before subscribing, so the practical answer is to run the same three videos through each, in the languages and platforms you actually use, and keep whichever one you reach for on the fourth video.