플라이북 FLYBOOK vs 여우(Kettu)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
플라이북 FLYBOOK
This app helps you build a reading habit by connecting you with others. It encourages small, consistent efforts and provides personalized book recommendations. Track your progress and gain confidence as you read.
- Build reading habits
- Social reading community
- Personalized book recommendations
- Track reading progress
- Daily reading encouragement
- AI book suggestions
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매년 새해마다 “책 좀 읽어야지” 다짐했지만 며칠 못 가 흐지부지된 적, 있지 않나요? 괜찮아요. 당신만 그런 게 아니에요. 혼자라면 어렵지만, 함께라면 할 수 있습니다. 플라이북은 혼자라면 어려운 독서를, 사람들과 함께 시작하도록 돕는 국내 유일의 소셜 앱입니다. • 하루 10분, 한 페이지부터 시작해도 괜찮아요. 오늘은 5분만 읽어도 되고, 한 챕터를 끝내지 못해도 되고, 며칠 쉬었다가 다시 시작해도 괜찮습니다. 중요한 건 완벽하게 해내는 것이 아니라 다시 시작할 수 있게 만드는 것. 플라이북은 그 과정을 도와줍니다. • "나도 할 수 있겠다"는 느낌 플라이북에서는 다른 사람들의 독서 기록을 보며 이런 생각이 자연스럽게 듭니다. “저 사람도 바쁜데 읽네.” “하루 이 정도면 나도 가능하겠다.” 혼자가 아니라는 느낌, 비교가 아니라 용기가 되는 독서를 경험해보세요. • 읽는 만큼 나만의 기록이 쌓입니다. 읽은 책이 남고, 읽은 시간이 쌓이고, 한 줄의 감상이 기록됩니다. 조금씩 쌓이다 보면 어느 순간 이렇게 느끼게 됩니다. “아, 나 책 읽는 사람이구나.” • 무슨 책을 읽어야 할지 몰라도 괜찮아요. 플라이북 AI가 당신의 취향과 상황에 맞는 책을 추천해줍니다. 새해 목표가 ‘많이 읽기’가 아니라 ‘다시 시작하기’라면, 지금 플라이북과 함께해요. • 이런 분들께 추천해요. - 올해는 독서 습관을 만들고 싶은 분 - 작심삼일을 반복해온 분 - 부담 없이 책과 친해지고 싶은 분 - 혼자서도, 함께도 읽고 싶은 분 • 새해 독서, 이번엔 다르게 시작해보세요. 책을 많이 읽지 않아도 괜찮습니다. 지금 당장 잘하지 않아도 괜찮습니다. “나도 독서할 수 있겠다”는 마음만 있다면 충분해요. 지금, 플라이북에서 당신의 첫 책을 날려보세요! ------ 본 앱의 구독 및 이용 약관은 Apple의 표준 최종 사용자 라이선스 계약(EULA)을 따릅니다. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
여우(Kettu)
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A kids’ messenger, “Yeou”. “Wouldn’t it be great if kids could keep playing with their daycare friends even after pickup?” “Before heading to an academy, there’s an hour—I'm wondering if my child’s friend can play right now.” When your child wants to play with a friend, do you want to know whether that friend is available to play at the moment? With “Yeou,” parents sign up on behalf of their children and create groups of friends. When your child updates their status at the moment they want to play (e.g., “Heading to the playground now”), a notification is sent to friends in the group. You can also take photos while playing together and upload them to the group in real time. It can feel awkward to ask for contact info from your child’s friend’s parents. Just scan a QR code and download “Yeou.” :) Because “Yeou” connects parents with each other, it provides safe opportunities for children to meet and play with friends. And even if a grandparent is the caregiver, they can help take care of the child through the family invitation feature. [How to use] Download Yeou. Log in to Yeou. Create a group. Invite friends to the group. Write your status or change your status. Send a notification to friends about the updated status, or receive notifications when friends update theirs. Upload photos of playing alone or meeting up and playing together. *Status settings (you can write different statuses for each group.) Example 1) Playing, resting, at the library, on a family trip, etc. Example 2) “Meeting Hana at the playground at 12:30.” *You can turn off your status per group, so you can take a break in the groups you want. About personal data collection Yeou does not collect any personal information such as phone numbers or names. All communication activities within groups are stored encrypted using standard algorithms. Not even visible to the server administrator Yeou groups can only be joined by people invited by group members, and information inside a group can only be viewed by members of that group. “Let’s meet here, Yeou.”
Screenshots
Verdict
The clearest difference is in-app purchases: 여우(Kettu) at none against 플라이북 FLYBOOK's 1. 여우(Kettu) also leads on iOS requirement (13.0 vs 15.6). 플라이북 FLYBOOK's advantage is update cadence (fortnightly vs every 6 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. 플라이북 FLYBOOK sells 1 in-app purchase, starting at $9.99 per year. 여우(Kettu) asks for nothing beyond the download.
플라이북 FLYBOOK ships an update fortnightly, 여우(Kettu) every 6 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | 플라이북 FLYBOOK | 여우(Kettu) |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) — better | — |
| Positive reviews | 96.4% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Fortnightly — better | Every 6 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 112 MB | 29 MB |
| Age rating | 12+ | 4+ |
| Developer | Flybook | zerosketch Inc. |
In-app purchases
플라이북 FLYBOOK
- 플라이북 플러스 1년$9.991 Year
여우(Kettu)
No in-app purchases









