AI Lingo vs Rootbly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AI Lingo
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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.
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.
- AI subtitle translation
- 15 languages supported
- Real-time subtitle display
- Subtitle sync adjustment
- Customizable subtitle size
- YouTube search and browsing
- Job progress tracking
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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
Verdict
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
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.
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.
| Parameter | AI Lingo | Rootbly |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.5 (2 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 60 MB | 50 MB |
| Age rating | 9+ | 4+ |
| Developer | Clavis Sinica Limited | Byeongsu KIM |
In-app purchases
AI Lingo
No in-app purchases
Rootbly
- RootblySub Pro1 Month trial$5.991 Month









