Comparison

공감 vs rozeta

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

Head to head
About

공감

Features
Read full description

AI 타이머를 활용해 나의 실제 공부시간을 측정해보세요! 소셜로그인을 통해 쉽게 로그인하고, 나의 공부시간을 측정해 열심히 공부합시다. 랭킹 기능을 통해 자신이 다른 사람들 보다 얼마나 더 열심히 공부했는지 경쟁해보세요! 리포트 기능을 통해 한달간 자신의 공부량을 확인해보세요! 버그/문의 사항은 https://forms.gle/6X98enEg7wKTGPyX7로 연락주세요!

About

rozeta

This AI-powered study tool helps university students make the most of recorded lectures. It synchronizes audio with slides, provides accurate transcripts and AI-generated study content, and offers lecture translation for non-native speakers.

Highlights
  • Slide-synced lecture recording
  • High-quality lecture subtitles and scripts
  • AI-generated study content reflecting professor's points
  • Lecture translation for English and other languages
  • Organized lecture review by slide
Read full description

rozeta is an AI lecture notes app for college students. Write while you record, and rozeta creates transcripts, explanations, translations and quizzes. ■ Handwriting and recording, linked page by page Import your lecture slides as a PDF file and write on each page while you record. When the slide changes, tap the Mark button. The recording so far is linked to that page, and your note moves to the next page. When you review, tap a page to hear the explanation from that point. ■ Speech recognition that gets technical terms right Lectures that mix Korean and English are transcribed exactly as your professor said them. - Terms spoken in Korean are written in Korean with the English in parentheses, and terms spoken in English stay in English. - Formulas, symbols and units use standard notation. - Add technical terms or proper nouns under Vocabulary, and they're transcribed just as you wrote them. ■ AI explanations built on what your professor said Explanations don't rely on the slides alone. They're based on what your professor explained and emphasized in class, and they take the handwriting on each page into account. You can also create an overview that puts a whole lecture into one document. ■ AI quizzes made from your class Questions come from what was covered in class. Take a quiz before the exam, and replay the part of the lecture behind any question you missed. A cumulative quiz combines several lectures so you can check everything on the exam at once. ■ Lectures in another language, translated Whatever language the class is in, transcripts can be translated. Translations and AI explanations are available in Korean, English, Japanese, Chinese, Spanish, French and German. ■ Premium handwriting Your Apple Pencil's pressure comes through with no lag. You get pens, highlighters, shapes, the lasso and text, plus 8 paper types. ■ Pick up on any device Notes and recordings are saved to the cloud. Open them on iPad, iPhone or the web, and playback picks up where you left off. Made for students who - record lectures but rarely listen back - want handwriting, lecture recordings and review in one place - want accurate transcripts of lectures full of technical terms - want to review lectures given in another language in their own - want AI study help that reflects what their professor said rozeta is made by Rozeta Inc. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rozeta.io/privacy

Screenshots

공감4 screens
rozeta4 screens

Verdict

The call

The clearest difference is in-app purchases: 공감 at none against rozeta's 7. 공감 also leads on ads (none vs shown) and update cadence (daily vs every 5 days). rozeta's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price 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. rozeta sells 7 in-app purchases, starting at $6.99 per month. 공감 asks for nothing beyond the download.

UpkeepUpdate frequency

공감 ships an update daily, rozeta every 5 days. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 3 level
공감 versus rozeta: the parameters behind the verdict, then further details
Parameter공감rozeta
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyDaily — betterEvery 5 days
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size251 MB73 MB
Age rating4+4+
DeveloperSeoyeon KimYujin Cha

In-app purchases

None

공감

No in-app purchases

7 purchases

rozeta

Subscriptions4
  • Basic Plan$6.991 Month
  • Standard Plan$9.991 Month
  • Premium Plan$14.991 Month
Show 1 more
  • Max 2×$22.991 Month
One-time3
  • AI credits 500$0.99
  • credits-2000$2.99
  • credits-5000$6.99

Questions

Is 공감 free?
공감 is free to download, with no in-app purchases.
Is rozeta free?
rozeta is free to download, with in-app purchases available.
Do 공감 or rozeta have ads?
rozeta shows ads; 공감 does not.
Which is updated more often, 공감 or rozeta?
공감 ships an update daily, and rozeta every 5 days. Most recently, 공감 was updated on October 5, 2026 and rozeta on October 24, 2026.

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