# Pen pal app for Korean and global friends

Updated 11 October 2026

Free pen pal app · K-pop, K-dramas, Korean, anime and more

Sea Pals is a free pen pal app for making Korean friends and friends around the world by letter. Mochi the otter looks for people who share your interests and languages. When someone accepts your letter, you can keep talking in Chats and raise Doori together.

Pen pals · Translation · Group chats · Shared pet · Friend widgets

[Open Sea Pals](https://seapals.app/app)

[Make your otter](https://seapals.app/make/otter)

App Store (Coming soon)

[Google Play](https://play.google.com/store/apps/details?id=app.seapals.mobile)

English · 한국어 · 日本語 · Deutsch · Português (Brasil) · Español · Русский · Türkçe · Bahasa Indonesia · Tiếng Việt · ไทย · Italiano · Français · Polski

hi! you found my island

## Find people who love what you love.

- [K-pop fans](https://seapals.app/pen-pals/kpop)

- [Korean pen pals](https://seapals.app/pen-pals/korean)

- [Learn Korean](https://seapals.app/pen-pals/learn-korean)

- [K-drama fans](https://seapals.app/pen-pals/kdrama)

- [Anime fans](https://seapals.app/pen-pals/anime)

- [Japanese pen pals](https://seapals.app/pen-pals/japanese)

최애가 누구야? 다 얘기해 줘!

Who's your bias? Tell me everything! · Translated

## Make something.

Free · no app needed

### Make your otter

Avatar maker. Download it, or take it to your island.

[Make one →](https://seapals.app/make/otter)

### Four-cut photo booth

Seasonal frames, in your browser.

[Take one →](https://seapals.app/booth)

### Friendship book

Everyone fills in a page. For a birthday, a goodbye, or just because.

[Start one →](https://seapals.app/book)

### Which sea creature are you?

A five-question quiz. Take it with a friend.

[Take it →](https://seapals.app/quiz)

### Write a letter

Paper for every season. It arrives as a bottle.

[Write one →](https://seapals.app/letter)

### Make a friendship quiz

How well do your friends know you?

[Make one →](https://seapals.app/friendship-quiz)

## Four places in Sea Pals

- Island · You

- Chats · Your friends

- Sea · New people

- Book · What you keep

## Write a letter. Mochi carries it across the sea.

### Write a letter

Papers for every season. Write a few lines and seal them in a bottle.

dear someone far away,
the tide came in slowly today and I thought, who's out there?

### Mochi sails it to a few islands

Follow the trip in Sea Pals, or from your Lock Screen on iPhone.

Mochi's at Noa's · next island in 2½h

### Accept a letter, and you’re friends

Your chat opens.

Ana · Lisbon · wrote back · 9,100 km

Accept

Magpies land on your island now and then. A magpie carries one letter to one person.

## Your island is you.

A little island that is you.

### Poke Mochi

Hops, flops, cracks a clam. Tok tok tok.

### Decorate with what you find

Find things on your island, receive gifts from visitors and keep souvenirs from Mochi’s trips.

### Today's mood

Mochi wears it for your friends.

### Set your song

Paste any song link. Friends tap to listen.

happy

sleepy

proud

cosy

stormy

## Same otter. Your way.

6 furs

9 hats

4 cheeks

specs

a favourite rock

## Your friends, next door.

### One camera

A photo to one friend, or all of them. It lands in Sea Pals, and on their Home Screen on iPhone.

### Weather on their island

Rain, snow or petals, from you.

### Same find

Find the same sea glass on the same morning, and you both get a moment.

Jiwon · 6:40pm

made tteokbokki, too spicy again

tap to boop

[More about widgets →](https://seapals.app/widgets)

[Stay close across the distance →](https://seapals.app/long-distance-friends)

## A pet you raise with your best friend.

A hermit crab you share. Boop it in Sea Pals, or from your Home Screen on iPhone. Its shell grows as your friendship does.

Never hungry

Never sick

Never lost

pebble

striped

stickered

pearl

zz… boop me later

[More about Doori →](https://seapals.app/doori)

## Up to 6 friends, anywhere.

2am in Seoul

golden hour in Madrid

lunch in Lima

오늘 바다 너무 예뻤어

the sea was so pretty today

Translated

### Translate a message

Built-in, on supported devices and language pairs

## Every Sunday evening, your week washes up.

Photos, booth strips, finds and letters you kept, all in one place.

Your week washed up · 12 moments · 3 friends

You and Ana both found a blue sea glass

## What you keep.

Postcards from every island

Booth strips, together or apart

A year of moods

Friends fill in a page in your friendship book.

[See a book](https://seapals.app/book)

[More about the Book →](https://seapals.app/memory-book)

## A little help with your next letter

[All guides](https://seapals.app/guides)

- [K-pop words and fan slang, explained](https://seapals.app/guides/kpop-words)

- [How to read Hangul, the Korean alphabet](https://seapals.app/guides/learn-hangul)

- [How to make Korean friends (online and in Korea)](https://seapals.app/guides/korean-friends)

- [What to write in your first pen pal letter](https://seapals.app/guides/first-letter)

## Cosy, on purpose.

- No streaks.

- No red badges.

- Skip a day, a week. Nothing is lost.

- No coins, no packs.

- Bottles and magpies are earned.

## Safe by design.

### Someone new never sees your birthday, exact place or username

Distances are rounded.

### Photos from someone new wait for you

A few messages each, then your yes.

### Every word from someone new is checked

Block, mute or report from any chat.

[How we keep you safe](https://seapals.app/safety)

## Questions

### Is Sea Pals free?

Yes. You can use Sea Pals for free on iPhone, Android and the web.

### Can I meet Korean or Japanese pen pals?

Shared-language matching can help you meet Korean or Japanese pen pals. Mochi chooses where letters go; you cannot choose a country or person.

### Is it safe for teens?

In Sea Pals, teens 13–17 are matched only with other teens, and adults only with adults, subject to country minimum ages.

### Do I need to speak Korean?

No. Write in a language you use or are learning, and look for Translate in a message’s menu.

## Your island is waiting.

[Open in your browser](https://seapals.app/app)

Free on iPhone, Android and the web

## Related pages

- [Help](https://seapals.app/help)

[Open in your browser](https://seapals.app/app)
## Pen pals for…
- [BTS fans](https://seapals.app/pen-pals/bts)
- [K-pop fans](https://seapals.app/pen-pals/kpop)
- [Korean pen pals](https://seapals.app/pen-pals/korean)
- [Korean practice with friends](https://seapals.app/pen-pals/learn-korean)
- [K-drama fans](https://seapals.app/pen-pals/kdrama)
- [Anime fans](https://seapals.app/pen-pals/anime)
- [Japanese pen pals](https://seapals.app/pen-pals/japanese)
- [Learn Japanese](https://seapals.app/pen-pals/learn-japanese)
- [English practice](https://seapals.app/pen-pals/learn-english)
- [Adult pen pals](https://seapals.app/pen-pals/adults)
## Legal
- [Otter maker](https://seapals.app/make/otter)
- [Four-cut photo booth](https://seapals.app/booth)
- [Friendship book](https://seapals.app/book)
- [Sea creature quiz](https://seapals.app/quiz)
- [Letter paper](https://seapals.app/letter)
- [Friendship quiz](https://seapals.app/friendship-quiz)
- [Virtual pet app with friends](https://seapals.app/doori)
- [Friends in other countries](https://seapals.app/lagoons)
- [Pen pals](https://seapals.app/pen-pals)
- [Safety](https://seapals.app/safety)
- [Guides](https://seapals.app/guides)
- [Friends widget app](https://seapals.app/widgets)
- [Memory book & photo journal](https://seapals.app/memory-book)
- [Long-distance friends](https://seapals.app/long-distance-friends)
- [Culture](https://seapals.app/culture)
- [BTS fans](https://seapals.app/pen-pals/bts)
- [K-pop fans](https://seapals.app/pen-pals/kpop)
- [Korean pen pals](https://seapals.app/pen-pals/korean)
- [Korean practice with friends](https://seapals.app/pen-pals/learn-korean)
- [K-drama fans](https://seapals.app/pen-pals/kdrama)
- [Anime fans](https://seapals.app/pen-pals/anime)
- [Japanese pen pals](https://seapals.app/pen-pals/japanese)
- [Learn Japanese](https://seapals.app/pen-pals/learn-japanese)
- [English practice](https://seapals.app/pen-pals/learn-english)
- [Adult pen pals](https://seapals.app/pen-pals/adults)
- [Help](https://seapals.app/help)
- [Privacy](https://seapals.app/legal/privacy)
- [Terms](https://seapals.app/legal/terms)
- [Community guidelines](https://seapals.app/legal/guidelines)
- [Child safety](https://seapals.app/legal/child-safety)
- [About](https://seapals.app/about)
City data from GeoNames (CC BY 4.0)