How do their growth rates compare?

LingoSub has a month-over-month growth rate of +33.2%; Viduu has —.

How does pricing compare?

LingoSub: Free Trial, Paid. Free tier includes all videos and stories with subtitles and sentence translations, plus the level test with no sign-up. LingoSub Pro is listed at $12 per month or $99 per year and unlocks per-word translations, word meanings and grammar notes, native pronunciation and saved words. Viduu: Contact for Pricing. Listed on the Chrome Web Store as Contact for Pricing. No tiers or figures are published on the extension page.

What are alternatives to LingoSub and Viduu?

Other tools in related categories include Language Reactor, Praktika, SubEasy, Trancy, Twee.

LingoSub vs Viduu — Traffic (4.14K vs 0), Pricing & Verdict

Open AI Tools

LingoSub vs Viduu — Traffic (4.14K vs 0), Pricing & Verdict | Open AI Tools

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	LingoSub	Viduu
Official Domain	lingosub.com	chromewebstore.google.com
Pricing Model	Free Trial, Paid	Contact for Pricing
Monthly Visits	4.14K (4,137)	0 (0)
MoM Traffic Delta	+1.03K (+33.2%)	0 (—)
Primary Market & Share	🇺🇸 United States (53.6%)	🌐 Global (—)
Direct Visits / mo	1.4K	0
User Rating	4.1	1.9
Supported Platforms	Website	Browser Extension

LingoSub

Learn languages from real videos with word-by-word subtitles

Word-by-word timed subtitles

Every word is transcribed with its own timing so it highlights exactly as it is spoken, with the meaning in that sentence displayed above it.

3-minute vocabulary level test

A no-signup test estimates how many words you know and places you from A1 to C2, then recommends videos matched to that level.

Context-aware word and grammar notes

Tap any word for its dictionary form, part of speech, frequency, in-sentence meaning and a note explaining the grammar, slang or expression.

Adaptive translation display

Show translations over every word as a beginner, switch to only unknown words as you improve, or turn them off completely.

Strengths & Pros

+Learns from authentic native content instead of scripted textbook dialogues
+Word-level timing and in-context explanations go far beyond plain YouTube subtitles
+Free tier covers all videos, stories and the level test with no account
+Supports twelve languages with CEFR-rated libraries and per-language level tests