두두 vs Routine Island
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
두두
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두두는 둘이 쓰는 할 일 공유앱입니다. 아내와 함께 쓰려고 만들었습니다. 연인끼리 할일을 공유하는 것은 중요합니다. 퇴근길에 사다줄 물건을 부탁하기도 하고 출근길에 분리수거하는 것도 잊으면 안되죠. 또 상대방이 무슨일을 하는지 했는지 아는 것도 중요하죠. 같이 쓸 사람을 초대하고 서로에게 할 일을 만들어보세요!
Routine Island
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Where small habits grow into an island of your own. Most habit apps fail you for one reason: they ask you to endure the same repetition, day after day. Routine Island is built differently. Every habit you complete builds a visible island that is yours alone — so consistency feels like growth, not grind. [A safe base to come back to] Everyone runs into days of burnout and low motivation. Routine Island is designed to be a safe base that holds you steady through them. Each small habit you finish makes your island a little more solid — and keeps you going. [Routine themes that move you to act] The first creation happens in your mind; the second happens in the real world. Turn who you want to become into a routine theme, broken down into steps small enough that you actually start. [Momentum that comes from doing it together] People are far more likely to keep a routine with others than alone. A promise to yourself is easy to break, but knowing someone is watching is a powerful nudge. Verify your routines alongside people working on the same habit, instead of pushing through it by yourself. [The mirroring effect of photo verification] Seeing others verify their routines does more than inspire imitation. Watching people who share your goal helps you mirror the behavior — and start defining yourself as someone who keeps their routines. That shift in identity is what makes a habit last. Questions or suggestions? We would love to hear from you. - Contact: routineisland1202@gmail.com - Feedback: https://tally.so/r/jao2M9
Screenshots
Verdict
The clearest difference is update cadence: 두두 at every 4 days against Routine Island's every 2 weeks. 두두 also leads on iOS requirement (11.0 vs 15.1). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
두두 ships an update every 4 days, Routine Island every 2 weeks. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | 두두 | Routine Island |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| Update frequency | Every 4 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 58 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Juyeon Yu | Seowon Choi |
In-app purchases
두두
No in-app purchases
Routine Island
No in-app purchases









