산림기사 vs Rubi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
산림기사
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산림기사 자격증 합격? 이 앱 하나면 끝! * 주요 기능* - 최신 기출문제 12세트! - 연도별, 과목별 기출문제 풀기 - 모든 문제 해설 제공 - 오답노트: 틀린 문제만 자동 저장 - 즐겨찾기 기능: 내가 찜한 문제를 다시 복습 - 랜덤 문제 풀기 기능 - 기출 문제 음성 듣기 - 해설강의 및 학습노트 제공 - 통계보기 기능 - Wifi, 인터넷 없이도 사용 가능 - 완전 무료 지하철 및 이동중에도 , 언제 어디서나 간편하게 기출문제를 풀고, 실력을 완성하세요. 합격에 필요한 모든 것! 이 앱만 있으면 소방설비기사(기계) 자격증을 손에 넣을 수 있습니다
Rubi
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Rubi is a Safari extension that adds a second line of subtitles to videos you watch in Safari. It leaves the site's own subtitles untouched and adds one more language underneath. Listen in English while reading subtitles in both English and your own language at the same time. SUPPORTED SITES - YouTube - Netflix - Disney+ - Amazon Prime Video - TED - Udemy - Coursera GETTING STARTED 1. Open a supported site in Safari and tap "aA" in the address bar 2. Choose "Manage Extensions" and turn Rubi on 3. Tap Rubi in the same menu and choose "Always Allow" Open the app and these steps are shown with illustrations. You only set this up once. WHAT IT DOES - Shows a second language on top of the subtitles the service already displays - Drag the subtitle with your finger to place it wherever you like - Keeps showing while the video is in full screen - Tap a word in the subtitles to look it up and save it to your word book (definitions need iOS 26 / macOS 26 or later) - Repeat a line, jump to the previous or next line, play at 0.5x to 1.5x, and browse the full transcript - Review saved words in the app. Each one shows which title and moment it came from, and tapping it reopens that scene in Safari WHO IT IS FOR - Language learners who want to check meaning without pausing - Anyone studying Korean, Spanish or another language through film and television - Listeners who only need help with the lines they missed Rubi does not stream or provide any video. Playback happens entirely in Safari, under your own account. The subtitles it shows come from the subtitle data each site already serves to you while you are signed in. Rubi does not export or share that data. The only things kept are the words and subtitle lines you choose to save to your word book, and they stay on your device. A Netflix or Disney+ subscription is required for those services. YouTube works for free. RUBI PRO Rubi is free for 1 hour a day, second subtitles included. Only the time a video with subtitles is playing counts, and a new hour starts after midnight. Subscribe to Rubi Pro (monthly) to use Rubi with no time limit. New subscribers get the first month free. Payment is charged to your Apple Account. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. You can cancel in Settings → Apple Account → Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shinproxy.github.io/rubi-site/rubi/privacy/
Screenshots
Verdict
The clearest difference is in-app purchases: 산림기사 at none against Rubi's 1. 산림기사 also leads on iOS requirement (12.0 vs 15.0). Rubi's advantage is ads (none vs shown) and update cadence (every 2 days vs every 2 months). On price 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. Rubi sells 1 in-app purchase, starting at $0.99 per month. 산림기사 asks for nothing beyond the download.
산림기사 ships an update every 2 months, Rubi every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | 산림기사 | Rubi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 208 MB | 2 MB |
| Age rating | 4+ | 17+ |
| Developer | Jongmin Kim | Shinichiro Yamashita |
In-app purchases
산림기사
No in-app purchases
Rubi
- Rubi Pro Monthly1 Month trial$0.991 Month









