Best pen pal apps in 2026, compared
The best pen pal app depends on whether you want letters, language practice or everyday friendship. Slowly centres on letters with delivery times, HelloTalk and Tandem on language exchange, InterPals and PenPal World on browsing pen pals, and Bubblic on voice letters for adults. Sea Pals starts with shared-interest letters; Bottled, MEEFF and KFriends offer other ways to meet people.
How to choose a pen pal app
Start with the friendship you want. Do you like writing a thoughtful letter, having a quick chat, or practising a language with someone who speaks it?
Looking for apps like Slowly? Decide whether you want letters, delivery times or time to get to know someone.
- Pace: what feels comfortable? For example, “I like longer letters and do not expect a reply straight away.”
- Meeting people: compare searching for pen pals with being introduced through shared interests.
- Privacy and age rules: check who can find your profile, what strangers see, and whether teens and adults can contact each other.
- Price: distinguish free use from optional extras. Would you need the paid features for the conversations you want?
Pen pal apps at a glance
Sources: the apps’ US App Store listings (checked 11 October 2026) and help pages (checked October 2026). App Store age ratings are not account minimum ages or safety guarantees; read each app’s contact rules before joining. Read how we check comparisons.
| App | Built around | How you meet people | Price | Good if you want… | Age rules |
|---|---|---|---|---|---|
| Sea Pals | Letters, then island friendships | Mochi carries letters to a few people with shared interests | Free; nothing sold | Shared-interest letters, then chats, small group chats and a pet together | 13+ (14+ in South Korea, 16+ in Australia); teens meet only teens as strangers |
| Slowly | Letters with delivery times | Search with interest, region and age-range filters | Free; optional paid extras, including coins for stamps | Slow, thoughtful letters with real delivery times | App Store: 17+ |
| Bottled: Message in a Bottle | A drifting message, then chat | One random person receives your message | Free; optional subscription to meet more people faster | A quick random message to one stranger | App Store: 9+ |
| HelloTalk | Language exchange | Native speakers for language practice | Free; optional VIP subscription | Language practice with translation, corrections and voice rooms | App Store: 9+ |
| Tandem | Language exchange by text, voice and video | Language partners; new profiles reviewed before chat | Free; optional Pro subscription | Language partners and video calls | App Store: 17+ |
| InterPals | Pen pals and language exchange | Search by country, age and languages | Free | Searching for pen pals yourself by country and language | App Store: 12+ |
| MEEFF | International chats, language exchange and dating | Matching and filters, including nearby and online people | Free to download | Text and video chats; the listing also includes dating | App Store: 17+ |
| KFriends | Korean culture, friends and language study | Shared disposition and interest keywords | Free to download | Korean culture, daily-life posts and voice messages | App Store: 4+ |
| PenPal World | A long-running pen pal website and app | Browse members by country, age and language, then message them | Free and paid memberships; paid adds more contacts per day and filters | Browsing pen pals yourself; profile photos reviewed; block contacts or whole countries | Check membership age rules |
| Bubblic | Voice letters: recorded voice messages | Meet adult pen pals around shared interests, without profile photos, bios or swiping | Free; optional subscription | Meeting by voice rather than a photo or bio | Adults |
What each app offers
Sea Pals starts with a letter to a few people who love what you love, often in a new country. Whoever writes back becomes a friend on your island.
Slowly makes distance part of the letter exchange: delivery takes hours to days depending on how far apart you are. You can search with interest, region and age-range filters. Stamps have optional paid extras.
Bottled sends a bottle to one random person. If they keep it, you can chat using text, photos and voice. If they release it, it drifts to someone else.
HelloTalk focuses on language practice with translation, message corrections and voice rooms. Tandem offers language exchange through text, voice notes and audio or video calls, with correction tools.
InterPals combines pen pals and language exchange with searches by country, age and language. MEEFF offers matching, chats and video calls; its listing includes friendship and language exchange. KFriends focuses on Korean culture and language study, with interest keywords, posts, voice messages, a dictionary and translation tools.
PenPal World is a long-running pen pal website and app where you browse members by country, age and language and message them. It has free and paid memberships; paid membership adds more contacts per day and filters. Profile photos are reviewed, and you can block contacts or whole countries.
Bubblic is an iPhone app for adults to meet pen pals through voice letters: recorded voice messages around shared interests. It has no profile photos, bios or swiping, and is free with an optional subscription. These descriptions were checked October 2026.
Apps to make Korean friends
For Korean language practice, HelloTalk and Tandem are built around language exchange. For Korean culture and everyday posts, KFriends explicitly focuses on people interested in Korea. InterPals lets you search by country and language; Slowly offers region and interest filters for letter exchanges.
MEEFF’s US App Store listing (checked 11 October 2026) describes international matching and filters. Sea Pals can help you meet Korean pen pals through shared and learning languages; you cannot choose a country or person.
Compare apps like HelloTalk, or read Sea Pals vs Slowly for the differences between the letter apps.
Privacy habits for any app
Keep new conversations in the app. Do not share your full name, school, address, phone number, social handles or photos early. A shared hobby is enough: “I have been trying to draw birds. What do you like making?”
Find the block and report controls and read the age rules. Profile reviews, age filters and friendly messages do not guarantee someone is safe. Check whether a rule covers searches, incoming messages or both.
You can say, “I am happy to keep chatting here, but I do not share my contact details.” If someone keeps pushing, stop replying and use the app’s safety controls. If you are a teen and something feels wrong, tell a trusted adult.
How friendship works in Sea Pals
A first letter can grow into everyday friendship in Sea Pals. After a reply, you can chat or gather in a lagoon for up to 6 people; Doori gives you a pet to raise together. Sea Pals is free on iPhone, Android and the web.
It keeps teen and adult strangers apart; the teen sea covers ages 13–17, subject to country minimums of 14 in South Korea and 16 in Australia. Strangers never see your birthday, exact location or username. Links and social handles cannot go in letters. For friends who met by letter, photos need 5 messages from each person and the receiver’s yes.