Vocabuo

vocabuo.com ↗

Vocabulary flashcards built from books, articles and videos you already use.

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SI Score: 80/100
Pricing: Not confirmed
Free plan: Not confirmed
Sign-up required: Not confirmed

Ask SI about Vocabuo

Answers use saved listing facts and recorded sources.

Homepage screenshot

SI REVIEWBased on the site's own pages, in a directory managed by people

What it does

Vocabuo is a vocabulary app that turns books, articles, websites and YouTube videos into spaced repetition flashcards. It supports English, Spanish, French, German, Italian and Swedish. It is available on the App Store and Google Play, plus a web app marked Beta. Features include ready made A1 to B2 CEFR word lists, a website reader, an eBook importer, a YouTube player, word explanations with AI and built in dictionaries, grammar cards, an AI tutor and progress statistics. Answers can be typed, spoken or revealed by tapping.

The site states 150,000+ downloads and a 4.7 average rating from 1,931 App Store and Google Play ratings. Reviews on the page describe a free version with optional paid features.

Best for

Building vocabulary from books, articles and websitesLearning words from YouTube videosCEFR word lists from A1 to B2Spaced repetition study on mobile or web

SI Score

80/100

#1 in Education & Learning

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 28, 2026Score ceiling for this evidence: 84/100.

Product usefulness 80

Evidence

Vocabuo takes vocabulary from websites, eBooks and YouTube into varied flashcards, schedules reviews and tracks progress. Six named learning languages, ready-made A1–B2 lists and a web app explicitly marked Beta define the scope of this content-to-study workflow.

Limits: Source-researched AI assessment reviewed by a separate native AI worker. No hands-on product test or human verification is claimed.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checks100/100

HTTPS: yes
Homepage answered with HTTP 200
Privacy policy link: found
Terms link: found
Contact or about page: found

We check that these pages exist, not what they say. Ownership and company details are not verified.

Checked Oct 18, 2026.

HTML accessibility checks100/100

Page language set: en
Mobile viewport: yes
Images with a text alternative: 36 of 36
Main heading (h1): yes

Automated checks on the homepage HTML only. This is not a full accessibility audit.

Checked Oct 18, 2026.

Homepage HTML response100/100

First byte after 159 ms
Homepage HTML loaded in 0.2 s
HTML size 147 KB

Measured once from our server. Images, scripts and your own connection are not included.

Checked Oct 18, 2026.

Trackers in homepage HTML100/100

No known third-party trackers in the homepage code.

Only the homepage HTML is checked. Trackers loaded later by scripts, and what the service does with your data, are not covered.

Checked Oct 18, 2026.

Page date hints90/100

No copyright year found on the page.
Server says last modified: Wed, 09 Sep 2026 11:13:13 GMT

A copyright year is a weak sign of upkeep. It does not prove the content is current.

Checked Oct 18, 2026.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

vocabuo.com/
- Product usefulness evidence
- Basic website checks (separate check)Checked Oct 18, 2026
- HTML accessibility checks (separate check)Checked Oct 18, 2026
- Homepage HTML response (separate check)Checked Oct 18, 2026
- Trackers in homepage HTML (separate check)Checked Oct 18, 2026
- Page date hints (separate check)Checked Oct 18, 2026
vocabuo.com/privacy.html
- Basic website checks (separate check)Checked Oct 18, 2026
vocabuo.com/terms.html
- Basic website checks (separate check)Checked Oct 18, 2026

Checks without a source link

PricingUnknownChecked Oct 18, 2026
Free planUnknownChecked Oct 18, 2026
Sign-up requiredUnknownChecked Oct 18, 2026
PlatformsUnknownChecked Oct 18, 2026
APIUnknownChecked Oct 18, 2026
Open sourceUnknownChecked Oct 18, 2026

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