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Eightify

Eightify is an AI YouTube summarizer that turns any video into key takeaways, timestamped highlights and full transcripts. It runs as a Chrome or Safari extension, an iOS and Android app, and on the web, in 40+ languages.

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Overview

What is Eightify?

Eightify is an AI summarizer for YouTube videos, published by Rational Expressions Inc. It installs as a browser extension for Chrome and Safari and runs directly inside the YouTube interface, with no URL to copy and paste elsewhere; iOS and Android apps and a web version cover the same ground away from the desktop.

Six features are advertised: AI-Powered Insights, which pulls the key ideas out of any video; Smart Navigation, which breaks the summary into timestamps you can click; Top Comment Overview, which condenses what commenters are saying; Video to Text, a transcript presented as sharper than YouTube's own captions; Multilingual Support across 40+ languages; and Easy Sharing, which converts a summary into a shareable article in a single click.

The scope is deliberately narrow: YouTube, and only YouTube. Within it, length is not a constraint, since short clips, video podcasts, news segments and multi-hour talks are all in range. The site addresses six audiences (busy professionals, students, content creators, teachers, journalists and casual viewers) and claims more than 500,000 users worldwide, with homepage structured data declaring a 4.0 rating from 559 reviews. Signing in requires a Google account.

What it does

  • Summarize any YouTube video into key takeaways
  • Jump straight to a passage through timestamped navigation
  • Read a digest of the video's top comments
  • Get the full text transcript of a video
  • Translate summaries and transcripts into 40+ languages
  • Turn a summary into a shareable article in one click
Audience

When to use Eightify / When not to

A quick filter to help you decide if Eightify is the right fit.

When to use Eightify

  • Busy professionals who need the substance of a long talk, webinar or video podcast without watching it end to end
  • Students turning recorded lectures into notes and revision sheets
  • Journalists digging facts out of news videos and multi-hour parliamentary hearings
  • Content creators using YouTube for research and idea generation
  • Teachers preparing lessons from video material

When not to use Eightify

  • Viewers who need to summarize local video files or content hosted anywhere other than YouTube
  • Anyone under 13, or unwilling to sign in with a Google account: both are hard requirements
  • Teams that need summaries they can act on without checking, since the terms disclaim any guarantee of accuracy, reliability or completeness
  • People looking for a permanently free tool, as the service is paid once the 7-day trial ends
  • Developers wanting to plug summarization into their own product: no public API documentation was found
Get started

How to use Eightify

A typical end-to-end flow, from setup to results.

  1. Install the Eightify extension in your browser, or download the iOS or Android app
  2. Sign in with a Google account
  3. Open any YouTube video
  4. Click the summarize button
  5. Read the key points and the timestamped summary, which appear instantly
  6. Switch between the summary and insights tabs
  7. Set the output language, the focus (insightful or controversial) and the format (list or FAQ)
  8. Open the full transcript, or convert the summary into a shareable article
  9. On mobile, work from the iOS app, the Android app or the mobile site
Quick read

Pros & Cons

Pros

  • Works inside the YouTube interface itself, with no URL to copy and paste
  • One tool across Chrome, Safari, iOS, Android and the web
  • Summaries and translations in 40+ languages
  • Clickable timestamps rather than one undifferentiated block of text
  • Full transcript included, presented as better than the native captions
  • The comment digest gives a quality signal before you commit to watching
  • 7-day free trial, a refund available within the first 30 days prorated for unused days, and an annual plan at 59.99 USD against 9.99 USD monthly

Cons

  • YouTube only: no local files, no other hosting platform
  • A Google account is mandatory
  • No permanent free plan is clearly documented, so the tool is paid once the 7-day trial ends
  • No public pricing page: the amounts are only readable in the homepage's structured data
  • A very thin privacy policy, with no mention of the GDPR, the CCPA, a DPA, subprocessors or hosting countries, and no documented training opt-out
  • Terms of use dated 1 April 2023 and unrevised since, which explicitly do not guarantee the accuracy of summaries
  • No public API documentation, and no about or contact page: email is the only channel
Pricing

Pricing & Plans

No permanent free plan is documented. Access begins with a 7-day free trial at 0.00 USD, after which the lowest paid entry point is the monthly subscription at 9.99 USD per month; an annual subscription is offered at 59.99 USD per year. Three offers are declared in total, ranging from 0.00 USD to 59.99 USD. A refund may be requested within the first 30 days, prorated for the days not used, and the subscription can be cancelled from the app interface or by email to support. Note that no public pricing page exists: these amounts come from the JSON-LD structured data on the homepage.

Eightify 7 days free trial plan
  • 0.00 USD
  • 7 days
Eightify annual subscription
  • 59.99 USD
  • billed per year
Special offers — 7-day free trial before any charge · Annual subscription at 59.99 USD against 9.99 USD per month, or around 5.00 USD a month, roughly half the monthly rate · Refund available within the first 30 days, prorated for the days not used · No promotional code and no student offer are mentioned
Prices and plans listed above may evolve. Always check the official pricing page before subscribing.
Trust & Privacy

Data, GDPR & hosting

A consolidated view of how Eightify handles your data.

GDPR overview

There is no GDPR implementation to report. The privacy policy never mentions the GDPR, and it never mentions the CCPA either; no legal basis for processing is stated anywhere in the document. No EU representative under Article 27 is named, no data processing agreement is published or offered, no subprocessor list exists, and no hosting country or region is declared. International transfers and standard contractual clauses are not addressed at all. What the policy does grant is a set of practical rights: users can review, change or delete their personal information by writing to support. The governing law is that of Delaware, United States, with disputes routed to arbitration or mediation. For a European buyer, the usual documentation trail is absent rather than partially covered.

Who owns the data?

Eightify is published by Rational Expressions Inc., a company based in Dover, Delaware, United States, and it is that company that holds the data. Sign-up collects a name and an email address; the service also logs derived data automatically, including IP address, browser type, operating system and access times, alongside in-app usage. Rights are exercised manually, through a single channel: users can review, change or delete their personal information by emailing support@eightify.app, and iOS users can delete their profile from within the app. The privacy policy in force is dated 16 October 2025.

Reuse rights

The privacy policy states that information is used to manage the account, produce anonymized analytics and ensure the functionality of the services. Cookies are described as serving the core functions of the site and of the service, and the only third-party cookie declared is the one set by the embedded YouTube player. Users who consent also receive personalized emails based on their summary history, with an unsubscribe link in each message. Two silences are worth noting rather than reading either way: the policy never mentions training AI models on customer data, and it never mentions selling or otherwise sharing data commercially.

Data retention & training

Retention summary
Eightify states that it keeps personal information for as long as is necessary to fulfill the purposes set out in its privacy policy, and longer where the law requires or permits it. No figure is attached to that: the policy publishes no retention period in days, months or years, and says nothing about anonymization schedules. Deletion is available on request, but only through a manual channel, an email to support@eightify.app. Users of the iOS app have a second route and can delete their profile directly from within the app. In practice, anyone wanting their data removed should plan on writing to support and keeping a record of the request.
GDPR contact

Hosting summary

No hosting location is declared. The privacy policy names no country or region where data is stored, and no infrastructure provider is identified anywhere on the site. The only technical element observable from the outside is that the domain is served behind Cloudflare (AS13335) on anycast IP addresses, which tells you how the site is delivered rather than where the data ends up. The one piece of jurisdictional information available is the publisher itself: Rational Expressions Inc. is established in Dover, Delaware, United States, and the terms of use place the governing law in Delaware. A European buyer should therefore assume US jurisdiction by default and treat the storage location as undocumented, since nothing published confirms it either way. No data processing agreement, no subprocessor list and no transfer mechanism are published to fill the gap.

Watch-outs

Things to keep in mind

Risks and trade-offs to weigh before adopting Eightify.

  • The terms of use explicitly disclaim the accuracy, reliability and completeness of the AI-generated summaries, so treat them as a first pass and not as a source
  • Leaning on a summary instead of the source material erodes your own grasp of a subject: a condensed argument is not the argument
  • Terms of use dated 1 April 2023 and unrevised for more than three years, while the privacy policy, effective 16 October 2025, never mentions the GDPR or the CCPA
  • No data processing agreement, no subprocessor list and no declared data hosting country, so there is nothing to hand to a compliance reviewer
  • No documented opt-out from model training, and no statement either way on whether customer data is used for it
  • Retention is described in general terms only, with no stated period, and deletion goes through an email request
  • Liability is capped at the amount paid over the 12 months preceding the claim, and the mandatory Google account means the service inherits that account's own terms
Setup

Setup & Integrations

Technical difficulty

Very low. Setup means installing a browser extension from the Chrome Web Store, or downloading the iOS or Android app, then signing in with a Google account. There is no API key to generate, no server-side configuration and no integration to wire up. The first summary is three gestures away: install, open a YouTube video, click. No technical skill is required.

Deployment

Web appBrowser extensionChrome extensionMobile appIOS appAndroid app

Integrations

YouTube Google Chrome Safari Google

Supported languages

EnglishArabicBengaliBulgarianChinese (Simplified)Chinese (Traditional)CzechDanishDutchEstonianFilipinoFinnishFrenchGermanGreekHebrewHindiHungarianIndonesianItalianJapaneseKoreanLatvianLithuanianMalayNorwegianPolishPortugueseRomanianRussianSlovakSlovenianSpanishSwedishThaiTurkishUkrainianUrduVietnameseZulu
Company

Behind Eightify

Company name
Rational Expressions Inc.
Founded
30/12/2022
Country of origin
🇺🇸 United States
Headquarters
1151 Walker Rd #343, Dover, DE 19904
UBO
INFORMATION_NOT_FOUND
UBO country
INFORMATION_NOT_FOUND
Domain registrar country
🇺🇸 United States
Legal contact
Support contact

Social

Official links

Resources

All the official URLs gathered for verification and reference.

FAQ

Frequently asked questions

What can Eightify summarize?
Any YouTube video, whatever its length, including podcasts and news content hosted on YouTube. It does not handle local video files or other platforms.
How do I get my first summary?
Install the Eightify extension, open any YouTube video and click the summarize button. The summary and the key points appear instantly.
Is there a mobile version?
Yes. Eightify is available as an iOS app, as an Android app and through the mobile site.
How many languages are supported?
More than 40, for both summaries and translations.
What does Eightify cost?
A 7-day free trial, then 9.99 USD per month or 59.99 USD per year. A refund can be requested within the first 30 days, prorated for the days not used.
Do I need an account?
Yes, a valid Google account, and you must be at least 13 years old to use the service.
Conclusion

Should you pick Eightify?

Eightify does one thing and marks its boundaries clearly: it summarizes and transcribes YouTube videos, inside the YouTube interface, across Chrome, Safari, iOS, Android and the web, in more than 40 languages. The commercial terms are just as straightforward: 9.99 USD per month or 59.99 USD per year, after a 7-day free trial, with a prorated refund available in the first 30 days. The reservations sit on the paperwork rather than the product. Legal documentation is light for a European audience, with no GDPR or CCPA reference, no data processing agreement, no subprocessor list, no declared hosting location, and terms of use unrevised since April 2023. If your material lives on YouTube and your use of the summaries is low-stakes, the claimed 500,000+ users and the declared 4.0 rating from 559 reviews point to a tool that does its narrow job. Verify before you rely on it.