Comparison

AI Lingo vs Rootbly

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AI Lingo

Features
Read full description

Mandarin Tutor If you are a Chinese learner or Chinese teacher, the Mandarin Tutor is an free app that you can't miss. It is based on 8,000+ Chinese Characters, 100,000+ Chinese words and 300,000+ Chinese sentences, and supports the interactive application of language learning between modern Chinese and ancient Chinese, as well as simplified and traditional Chinese. You can say anything you want to the Mandarin Tutor with your mother language; You can also copy the article you are reading to the Mandarin Tutor—— 1.The Mandarin Tutor will convert your voices into text and provide corresponding Chinese translation. 2.The Mandarin Tutor will accompany you to practice Mandarin pronunciation and score your pronunciation to improve your pronunciation. 3.The Mandarin Tutor will perform sentence segmentation processing on the converted Chinese text, helping you understand the grammatical structure of the text more clearly. 4.The Mandarin Tutor provides detailed interpretation of Chinese characters or phrases contained in the text. The Mandarin Tutor also provides you with the function of downloading word cards and character cards at any time. 5.The Mandarin Tutor currently supports 5 search methods: text, voice, OCR, visual and handwriting. We recommend you use Visual Searching, which will bring you a better Chinese searching experience. 6.Recommended by many most famous education institutions, teachers, experts, media, etc.

About

Rootbly

Watch foreign YouTube videos with AI-generated translated subtitles in real-time. Paste a URL to get instant subtitles in your preferred language, with options to adjust sync, size, and view original text.

Highlights
  • AI subtitle translation
  • 15 languages supported
  • Real-time subtitle display
  • Subtitle sync adjustment
  • Customizable subtitle size
  • YouTube search and browsing
  • Job progress tracking
Features
Read full description

Watch foreign YouTube videos with translated subtitles. RootblySub auto-translates YouTube subtitles into your language. Just paste a URL, and AI generates subtitles you can watch instantly in our built-in player. ◆ CORE FEATURES • AI Subtitle Translation — 15 languages including English, Korean, Japanese, Chinese, Spanish, French, and more • Built-in Video Player — Translated subtitles displayed in real-time over the video • Subtitle Sync Control — Manual offset adjustment within ±5 seconds • Subtitle Size Settings — Small/Medium/Large presets with fine-grained control • Original Text Toggle — View translation alongside or without the original ◆ YOUTUBE BROWSING • YouTube Search — Find videos directly within the app • Channel Browser — Explore videos, Shorts, playlists, and live streams • Channel Favorites — Save channels you watch frequently • Clipboard Detection — Auto-detect copied YouTube URLs ◆ TRANSLATION JOB MANAGEMENT • Real-time Progress — Track each stage: downloading → transcribing → translating • Push Notifications — Get notified the moment translation is complete • Job History — Manage all your translation requests in one place ◆ CONVENIENCE • Sign in with Google / Apple or use Guest mode • YouTube Premium integration for ad-free viewing • Korean & English UI • Fullscreen landscape mode Enjoy YouTube content from around the world — no language barriers. Terms of Use: https://rootblysub.rootbly.com/terms Privacy Policy: https://rootblysub.rootbly.com/privacy ---

Screenshots

AI Lingo4 screens
Rootbly4 screens

Verdict

The call

The clearest difference is in-app purchases: AI Lingo at none against Rootbly's 1. AI Lingo also leads on iOS requirement (11.0 vs 16.4). Rootbly's advantage is update cadence (every 9 days vs every 2 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Rootbly sells 1 in-app purchase, starting at $5.99 per month. AI Lingo asks for nothing beyond the download.

UpkeepUpdate frequency

AI Lingo ships an update every 2 months, Rootbly every 9 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
AI Lingo versus Rootbly: the parameters behind the verdict, then further details
ParameterAI LingoRootbly
PriceFreeFree
Rating—2.5 (2 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better16.4
Further details — not scored
Size60 MB50 MB
Age rating9+4+
DeveloperClavis Sinica LimitedByeongsu KIM

In-app purchases

None

AI Lingo

No in-app purchases

1 purchases

Rootbly

Subscriptions1
  • RootblySub Pro1 Month trial$5.991 Month

Questions

Is AI Lingo free?
AI Lingo is free to download, with no in-app purchases.
Is Rootbly free?
Rootbly is free to download, with in-app purchases available.
Do AI Lingo or Rootbly have ads?
Neither AI Lingo nor Rootbly shows ads.
Which is updated more often, AI Lingo or Rootbly?
AI Lingo ships an update every 2 months, and Rootbly every 9 days. Most recently, AI Lingo was updated on October 27, 2026 and Rootbly on October 28, 2026.

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