Comparison

Caveduck vs sujo

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

Head to head
About

Caveduck

Engage in dynamic conversations with over 40,000 unique AI characters. Create and customize your own companions for unfiltered chats on any topic. Experience realistic AI interactions designed for privacy and enjoyment.

Highlights
  • 40,000+ AI characters
  • Character creation and customization
  • Unfiltered conversations
  • Realistic AI interactions
  • Privacy protection
  • User feedback integration
Features
Read full description

Forget fixed endings. Here, one message can change the next scene. More than 1 million people have joined Caveduck, home to 160K+ characters. Find your new favorite, step into your persona, and play the story your way. 1. 160K+ characters. Who will be your favorite? From heart-racing romance and epic fantasy to gripping mysteries and cozy everyday moments. Browse tags, search for your favorite trope, and send the first message. Your story starts right there. 2. Choose a persona and jump right in Set your name, personality, relationships, and backstory. Need a spark? Pick an AI-recommended persona and you're ready to go. Who will you be today? 3. Switch AI models to match the mood Some days call for quick banter. Others need rich, cinematic storytelling. Choose the AI model that fits your style and switch anytime—even mid-chat. 4. Turn conversations into scenes Listen to character voices and narration, then turn your latest exchange into a scene image. Make the moments you imagined feel even more alive. 5. Don't like the turn? Rewrite it! Regenerate a reply, edit it yourself, or get a suggested response. Bookmark the moments worth keeping. You decide where the story goes. 6. Build the world you want Create characters, worlds, and episodes. Share them with everyone or keep them private. Your imagination, your rules. Perfect for you if... - You'd rather shape the plot than follow a fixed ending - You love AI character chat, roleplay, romance, fantasy, mystery, or slice-of-life stories - You want control over personas and AI models - You want to create and share your own characters and worlds All that's left is the first message. Whose world will you enter today? Start your story on Caveduck.

About

sujo

This app simulates a virtual aquarium where fish swim among letters. Tap the screen to feed them, watch them gather, and enjoy a calming visual experience. It also includes a clock and a timer with customizable completion alerts.

Highlights
  • 12 types of aquariums
  • 11 fish color variations
  • Digital and analog clock
  • Customizable timer with 9 completion sounds
  • Interactive feeding mechanic
  • Full-screen display
  • Automatic launch via shortcuts
Features
Read full description

글자로 지은 수조에서 물고기가 헤엄칩니다. 화면을 톡 건드리면 그 자리에 사료가 떨어지며 무리가 모여듭니다. 옆으로 넘기면 수조, 시계, 타이머가 차례로 나옵니다. 타이머를 맞춰두고 일하다 보면, 다 되는 순간 물고기들에게 사료가 뿌려지며 금색 컨페티가 터집니다. 주요 기능 수조 12종 - 기본 수초밭, 이와구미, 유목, 바위와 홍초, 그리고 보물상자와 해적선, 무지개 색자갈 같은 옛날 문방구 어항 물고기 색상 11종 - 네온 / 골드 / 백설 / 핑크 네온 / 무지개 / 금붕어 / 레트로 무지개 / 유령 / 귤 / 자몽 / 베타 시계 - 디지털과 아날로그, 아날로그는 헤어라인 / 클래식 / 오르빗 3종 타이머 - 시·분·초 휠로 맞추고, 완료음은 9종 중에 고릅니다 사료 주기 - 톡 건드린 자리에 투하, 물고기마다 반응 속도가 달라 무리가 자연스럽게 모입니다 수조 바로 시작 - 전체 화면으로 열리고, 보고 있는 동안 화면이 꺼지지 않습니다 충전기 자동 실행 - 단축어 앱의 '충전기' 자동화에 걸어두면 꽂는 순간 켜집니다 결정론적 시뮬레이션 - 가볍고 조용합니다. 열이 오르면 스스로 해상도를 낮춰 부드러움을 지킵니다 수집하는 데이터가 없습니다. 계정도, 네트워크 통신도 없습니다.

Screenshots

Caveduck4 screens
sujo4 screens

Verdict

The call

The clearest difference is price: Caveduck at Free against sujo's $0.99. Caveduck also leads on iOS requirement (15.1 vs 17.0). sujo's advantage is in-app purchases (none vs 10) and ads (none vs shown). On update cadence 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

Caveduck is free to download; sujo costs $0.99 up front. Caveduck sells 10 one-off in-app purchases. sujo asks for nothing beyond the download.

UpkeepUpdate frequency

Caveduck ships an update every 3 weeks, sujo every 2 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Caveduck versus sujo: the parameters behind the verdict, then further details
ParameterCaveducksujo
PriceFree — better$0.99
Rating3.8 (45 ratings) — better—
Positive reviews91.1% of reviews100.0% of reviews — better
Number of ratings45 — better—
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size116 MB3 MB
Age rating12+4+
DeveloperWarp Space Inc.JaeHoon Ma

Customer experience

Caveduck

All ratings44 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews179 reviews
Positive91.1%
Neutral2.8%
Negative6.1%

sujo

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Caveduck

Reported bugs

1 issue
  • Sign-in via Google not working

Requested features

2 requests
  • More AI model customization options
  • Expanded NSFW content support

sujo

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Caveduck

One-time10
  • 500 Wings (Special Offer)$2.99
  • 5,000 Wings$5.99
  • 500 Wing$5.99
Show 7 more
  • 1,000 Wings (Special Offer)$5.99
  • 10,000 Wings$11.99
  • 1,000 Wings$11.99
  • 30,000 Wings$35.99
  • 3,000 Wings$35.99
  • 50,000 Wings$59.99
  • 5,000 Wings$59.99
None

sujo

No in-app purchases

Questions

Is Caveduck free?
Caveduck is free to download, with in-app purchases available.
Is sujo free?
sujo costs $0.99, with no in-app purchases.
Do Caveduck or sujo have ads?
Caveduck shows ads; sujo does not.
Which is updated more often, Caveduck or sujo?
Caveduck ships an update every 3 weeks, and sujo every 2 weeks. Most recently, Caveduck was updated on November 4, 2026 and sujo on October 31, 2026.

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