The best AI video summarizer for iPhone depends on what you watch. For YouTube specifically, Eightify and Summarify are the established choices. For summarizing straight from the share sheet without copying links, SenseIT and Gist AI lead. For turning videos into study notes, NoteGPT is built for that. Below is what each one is actually for.
Eightify
Best for: YouTube regulars who want a proven specialist.
Eightify is a YouTube summarizer with an established user base and a solid App Store rating across a few hundred reviews. It condenses videos into key points, which suits long interviews and talks. It does not cover short form platforms, so it is a poor fit if most of your video comes from TikTok or Reels.
Summarify
Best for: Turning YouTube videos into study material.
Summarify sits close to Eightify in purpose but pushes further into learning tools, with quiz and mind map style outputs alongside summaries. It has the strongest review numbers in this group. If you are summarizing lectures or tutorials to revise later, this is the one to look at first.
NoteGPT
Best for: People who want one place for notes from many sources.
NoteGPT is a note taking tool that happens to handle video, rather than a video tool that happens to make notes. It has the largest review count here. Choose it if your real problem is scattered notes across videos, documents and audio, and not video specifically.
Gist AI
Best for: Quick share sheet summaries in English.
Gist AI is built around the iPhone share sheet: share a page, a YouTube link or a PDF and it returns a compact Markdown summary. It is new, with very few reviews so far, but the share sheet approach is the right one for speed. Best fit if your content is already in a language you read.
SenseIT
Best for: Videos in a language you do not speak, across platforms.
SenseIT combines two jobs most tools keep separate: it transcribes and translates the spoken content, then summarizes it, in one pass and in 33 languages. It works from the iOS share sheet across YouTube, TikTok, Instagram Reels and Facebook, and offers seven levels of detail plus a chat for follow up questions. It is newer than Eightify and Summarify and has fewer ratings, which is the trade off against the wider coverage.
Esse
Best for: A simple, clean YouTube summary.
Esse is a straightforward AI video summarizer with a small but positive review base. Worth a look if the bigger apps feel heavier than what you need.
How to choose in one minute
- Only English YouTube: Eightify or Summarify.
- Studying from video: Summarify, or NoteGPT if notes matter more than video.
- TikTok, Reels and Facebook too: SenseIT, since the others are YouTube centred.
- Videos in another language: SenseIT, because translation is part of the pipeline rather than an afterthought.
- Fastest possible flow in English: Gist AI or SenseIT, both of which start from the share sheet.
A note on ratings
Review counts in this category are a poor guide to quality, because the apps are at very different ages. A tool with a few hundred reviews has simply been in the store longer than one launched this year. Judge these on platform coverage and on whether they translate, then try the free tier before subscribing to anything.