Eightify is an AI tool that summarises YouTube videos. It works as a browser extension and as iOS and Android apps, producing key points with timestamps, transcripts and an overview of top comments, so you can decide what to watch and review the main ideas quickly.
Last updated: 10 November 2026
Reading time: about 7 minutes
How we wrote this article: this article was written by Saj Ali. It is based on Eightify’s website, its Chrome Web Store listing and its US App Store listing, all checked on 10 November 2026, plus research on how people learn and remember. Prices are in US dollars.
Eightify at a glance
- What it does. Summarises YouTube videos into key points with timestamps.
- Where it works. Chrome extension, iPhone and Android apps.
- Price. Eightify Pro: $9.99 a month or $59.99 a year on the App Store; 7-day free trial.
- Ratings. 4.0 from 863 ratings on the Chrome Web Store; 4.3 from 147 on the US App Store.
- Best for. Previewing long talks, podcasts and lectures before you commit time.
Contents
- What Eightify Is
- Key Features
- Pricing
- Ratings and User Feedback
- Using Eightify for Self-Help Learning
- How to Get Started
- Eightify Compared With Other Options
- Pros and Cons
- Who Eightify Suits
- Frequently Asked Questions
- Key Takeaways
- Explore More on Self Help Supermarket
- Sources
What Eightify Is
Eightify is made by Rational Expressions Inc., based in San Francisco, according to its Chrome Web Store listing. The listing describes it as “your ultimate YouTube summary tool, powered by Claude and ChatGPT”, and says it can summarise videos “of any length, up to 10 hours”.
Eightify’s website says it is “trusted by 500,000+ users worldwide” and claims users can “save over 6 hours per week on videos”. These are the company’s own figures.
For self-help learners, the appeal is clear: many of the most popular personal growth videos and podcasts run for one to three hours. A summary helps you check whether a video covers what you need before you invest that time.
Key Features
| Feature | What it does |
|---|---|
| Key insights | Extracts the main ideas from a video |
| Timestamped navigation | Lets you jump to specific topics in the video |
| Top comment overview | Summarises what viewers said in the comments |
| Transcripts | Provides a text transcript of the video |
| 40+ languages | Summaries and translations in more than 40 languages |
| Custom insights | Choose focus (insightful, actionable, controversial, funny), format (list or Q&A), length and grouping |
| Sharing | Turn summaries into shareable articles or links |
| Multi-device | One account works on Chrome, iOS and Android |
Pricing
Eightify does not show a pricing page on its website, and the eightify.app/pricing address returned a “not found” page when checked. The clearest published prices are the in-app purchases on its US App Store listing:
| Plan | Price (USD) | Monthly equivalent |
|---|---|---|
| Eightify Pro – Monthly | $9.99 a month | $9.99 |
| Eightify Pro – Annual | $59.99 a year | About $5.00 |
The Chrome Web Store listing says there is a 7-day free trial of the extension, with “no charge until trial ends”, and that you can cancel at any time, even during the trial, from the subscription section of your account.
Tip: if you try the free trial, set a calendar reminder a day before it ends so you can decide whether to continue.
Ratings and User Feedback
| Platform | Rating | Number of ratings | Checked |
|---|---|---|---|
| Chrome Web Store | 4.0 out of 5 | 863 | 10 November 2026 |
| US App Store (iPhone) | 4.3 out of 5 | 147 | 10 November 2026 |
Users quoted on Eightify’s website mostly praise the time saved. One wrote that it “allows me to read the summary of the video before watching it; it’s like reading the Paper Abstract before deciding if the paper is for me”. The same user added: “I wish I could use my own API key and pay a lesser price, though.”
Using Eightify for Self-Help Learning
Summaries are useful for choosing and reviewing content, but research suggests that how you use them matters for what you remember.
| Research finding | What it means for Eightify users |
|---|---|
| Testing yourself on material leads to better long-term memory than rereading it (Roediger and Karpicke, 2006) | After reading a summary, close it and write down the key points from memory |
| Students who took notes by hand processed ideas more deeply and did better on conceptual questions than those who typed notes word for word (Mueller and Oppenheimer, 2014) | Put the summary in your own words rather than copying it |
| Plans that link an action to a specific time or situation make follow-through more likely (Gollwitzer and Sheeran, 2006) | Pick one “actionable” insight and decide when you will use it |
A simple workflow:
- Preview. Use the summary to decide whether a video is worth watching.
- Watch selectively. Use timestamps to jump to the sections that matter most to you.
- Recall. Close the summary and write the three main ideas from memory.
- Apply. Choose one idea to try this week, and note it in your journal.
- Review. Revisit your notes a week later.
For channels worth summarising, see our list of the best self-help YouTube channels.
How to Get Started
According to the Chrome Web Store listing, getting started takes four steps:
- Install the Eightify extension from the Chrome Web Store, or download the iOS or Android app.
- Go to any YouTube video.
- Click the Eightify button.
- Read the summary and key insights.
You can then adjust the settings to change the focus, format and length of the insights, and turn emojis and section titles on or off.
Eightify Compared With Other Options
| Option | Cost | Strength | Trade-off |
|---|---|---|---|
| Eightify | $9.99 a month or $59.99 a year | Summaries inside YouTube, with timestamps and comment overview | Subscription; YouTube only |
| YouTube’s own transcript | Free | Full text of what was said | No summary; you do the work |
| Pasting a transcript into an AI chatbot | Often free or part of an existing plan | Flexible questions and formats | Extra steps for each video |
| Taking your own notes | Free | Deepest learning and memory | Takes the most time |
Pros and Cons
| Pros | Cons |
|---|---|
| Saves time on long videos | Works with YouTube videos only |
| Timestamps make it easy to jump to key sections | No pricing page on the website |
| Summaries in 40+ languages | Summaries can miss nuance, tone and examples |
| Works on desktop and mobile | Ongoing subscription cost |
| 7-day free trial | Reading a summary is not the same as learning the material |
Who Eightify Suits
Eightify is likely to suit you if you:
- Watch long talks, interviews or lectures and want to choose carefully
- Learn in a second language and want translated summaries
- Want quick notes to review after watching
It may suit you less if you:
- Mostly watch short videos
- Prefer to absorb a speaker’s full story and tone
- Only need a summary now and then, since free AI chat tools can summarise a pasted transcript
For more ways to protect your time and attention, see our productivity guide.
Frequently Asked Questions
What is Eightify?
Eightify is an AI tool that summarises YouTube videos, with key points, timestamps, transcripts and an overview of top comments. It works as a Chrome extension and as mobile apps.
How much does Eightify cost?
On the US App Store, Eightify Pro costs $9.99 a month or $59.99 a year, as checked on 10 November 2026.
Is there a free trial?
Yes. The Chrome Web Store listing offers a 7-day free trial, and you can cancel during the trial.
Does Eightify work on mobile?
Yes. Eightify has iOS and Android apps, and one account works across Chrome and mobile.
Which AI does Eightify use?
Its Chrome Web Store listing says it is powered by Claude and ChatGPT.
Can Eightify summarise long videos?
Yes. The listing says it can summarise videos of up to 10 hours.
Key Takeaways
- Eightify summarises YouTube videos with key points and timestamps.
- Eightify Pro costs $9.99 a month or $59.99 a year on the US App Store.
- It is rated 4.0 on the Chrome Web Store and 4.3 on the US App Store.
- It is most useful for previewing long videos and reviewing key ideas.
- Recalling and applying ideas helps you remember more than rereading summaries.
Explore More on Self Help Supermarket
Use these pages alongside this one:
- Best Self-Help YouTube Channels – channels worth watching and summarising
- Journaling for Mental Health – writing to reflect and remember
- Productivity – ways to protect your time
- Actualized.org Life Purpose Course Review – a long-form video course on purpose
- Atomic Habits Summary – the key ideas from James Clear’s book
- Browse all self-help techniques – compare every method on Self Help Supermarket.
Sources
- Eightify. Official website. https://eightify.app/
- Chrome Web Store. Eightify: AI YouTube Summarizer. https://chromewebstore.google.com/detail/eightify-ai-youtube-summa/cdcpabkolgalpgeingbdcebojebfelgb?hl=en
- Apple App Store (US). Eightify: AI YouTube Summarizer. https://apps.apple.com/us/app/eightify-ai-youtube-summarizer/id6467562658
- Roediger, H. L., and Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249–255. https://doi.org/10.1111/j.1467-9280.2006.01693.x
- Gollwitzer, P. M., and Sheeran, P. (2006). Implementation intentions and goal achievement: A meta-analysis of effects and processes. Advances in Experimental Social Psychology, 38, 69–119. https://doi.org/10.1016/S0065-2601%2806%2938002-1
- Mueller, P. A., and Oppenheimer, D. M. (2014). The pen is mightier than the keyboard: Advantages of longhand over laptop note taking. Psychological Science, 25(6), 1159–1168. https://doi.org/10.1177/0956797614524581
Self Help Supermarket guides are for general information and are not a substitute for professional medical or psychological advice.