--- title: "The best pen pal apps in 2026, and which kind of pen pal you want" description: "Pen pal apps don’t all do the same thing. Slow letters, fast language chat or paper in the post: here is what each one is good for, and where it falls short." url: https://kindredly.io/guides/best-pen-pal-apps language: en updated: 2026-10-21 --- # The best pen pal apps in 2026, and which kind of pen pal you want *Slow letters, language-exchange chat and real postcards: what each app is actually for, what it costs, and the honest catch.* 2026-10-21 · 9 min read You want someone to write to. Not a group chat, not a feed, not another person who replies *lol* in eleven seconds and forgets you by Thursday. Someone far away who sits down, thinks about what you said, and writes back properly. Maybe you had a pen pal at school and miss the feeling of a letter you didn't expect. Maybe you just want one conversation in your week that isn't about work. So you search for a pen pal app, and there are more than you'd think. They don't do the same thing. Some are slow letters, some are fast chat built for learning a language, and one sends real postcards through the post. Which one is right depends less on the app than on what kind of correspondence you actually want. ## When a pen pal app helps (and when it isn't enough) A pen pal app is good at a few specific things. It finds you a stranger who wants to write, which is the hard part. It gives you a reason to put your week into words. If you're learning a language, it gives you a real person to practise on. And if it's a slow-letter app, it gives you something to look forward to: a letter that is on its way. It is not good at everything. A pen pal is not a replacement for people you can see, and a few letters a week won't fix loneliness on their own, though they can help. Apps also can't promise anyone writes back. Every one of these depends on strangers keeping up their end, and some won't. If you go in expecting a friendship by Friday, you'll be disappointed by all of them. If you go in expecting a few good letters and maybe one person who sticks, you'll usually get it. ## The best pen pal apps in 2026 Facts below were checked on October 21, 2026. Prices are US App Store prices and vary by country. ### Kindredly Best for slow, anonymous letters to a stranger who was matched to you by how you write. There are no profile photos and no browsing a list of people. You write a letter, and Kindredly finds you someone whose writing sits close to yours. Wren, the courier bird, carries it, and it arrives slowly on purpose. Nobody knows your name. After five letters each way, the two of you can trade names, or never trade them at all. It's free with 5 letters a day; First Class costs $6.99 a month, $39.99 a year or $129 for life. It runs on iPhone and on the web at [kindredly.io](https://kindredly.io/), and it's for adults (18+). The honest catch: it is young and small, so there are fewer people in it than in the older apps, and it is slow by design. If you want an answer tonight, this isn't it. ### Slowly Best if you want the slow-letter feeling with a larger, established community. Each letter takes hours to days to arrive, depending on how far apart you live, and you write under a nickname and an avatar while collecting stamps along the way. It's on iOS, Android and the desktop web (the web version doesn't work in a phone's browser). Sending and receiving letters is free; Slowly Plus and coins are optional purchases. The catch is mostly about fit: you find people by interests and language rather than by how they write, and the delivery time is fixed, so you can't hurry a letter or hold one back. It's rated 16+. ### InterPals Best for browsing a big, long-running directory of people and choosing for yourself. InterPals has been around since 1998 and works like a pen pal and language-exchange site: you make a profile, search for people, and message them. It's on the web, iOS and Android, and making a profile, searching and messaging are free. The catch is the profile model itself. You choose people by their photos and where they live, the exchanges feel more like chat than letters, and store reviews mention fake and scam accounts, so it's worth being careful with anyone who moves fast. ### HelloTalk Best if the real goal is a language. HelloTalk pairs you with native speakers of the language you're learning, who are learning yours, and you talk by text and voice chat, voice rooms and livestreams. It's on iOS and Android. The core is free; VIP costs about $12.99 a month or $79.99 a year. The catch is that it's built for learning, not for letters: replies come fast, a lot of the conversation is people correcting each other, and it isn't anonymous. ### Tandem Also best for language exchange, with a very wide range of languages. Tandem connects you with native speakers for one-to-one chats and calls, plus group audio rooms it calls Parties, and it says it covers more than 300 languages, sign languages included. It's on iOS and Android, and on the web. The app is free to start and Tandem Pro is paid. Like HelloTalk, the catch is that it's real-time chat with profiles, organised around learning a language rather than writing slow letters to one person. ### Postcrossing Best if you want paper in your letterbox. Postcrossing gives you the address of a random member somewhere in the world; you send them a real postcard, and someone else sends one to you. It's completely free to join and use; you pay for the cards and stamps. There is no official app, but the website works well on a phone. The catch is that it exchanges postcards, not pen pals: one card, one stranger, usually no back-and-forth, and your postal address is shared with other members. If you want paper letters with an ongoing pen pal, older sites like Global Penfriends, which has run for more than 25 years with groups for e-pals, language exchange and snail mail, are still around. They work as profile directories on the web rather than apps. ## Slow letters, fast chat, or paper Under the app names, there are really three different things here. **Slow letters** (Kindredly, Slowly). You write something long, it takes time to arrive, and the other person has time to answer properly. The delay does a lot of the work: nobody is waiting for a typing bubble, so you can write the way you'd actually talk if you had an afternoon. The cost is patience. A good correspondence might be two letters a week. **Fast chat** (HelloTalk, Tandem, InterPals). Messages go back and forth in minutes, sometimes with voice. That is exactly right for practising a language, where you want lots of small exchanges and quick corrections. It's less good for the thing people usually mean by a pen pal: one person, getting to know you slowly, through what you write. If that's what you want with a language, it's possible on slower apps too; see [finding a penpal in another language](https://kindredly.io/guides/penpal-in-another-language). **Paper** (Postcrossing, postal clubs). Nothing beats holding a card someone in another country chose for you. But paper means addresses, stamps and weeks per exchange, and Postcrossing in particular is one card to one stranger rather than an ongoing friendship. There's one more difference that matters more than speed: **how you find each other.** Most apps show you a profile — age, country, interests, often a photo — and you pick. Some match by language. Kindredly matches by the writing itself, which means the person who gets your letter was picked for the one thing they'll actually be reading. Neither approach is wrong. They just lead to different first letters. For more on what makes the first one land, see [how to find a penpal](https://kindredly.io/guides/how-to-find-a-penpal). ## Staying safe with a stranger Whatever app you pick, a few habits keep a correspondence pleasant and keep you in control. - **Keep identifying details out of the first letters.** Your full name, your workplace, your school, your street and your other social accounts can all wait until you know the person, or forever. - **Be wary of anyone who wants to move fast.** Asking early to switch to another app, to video call, or for photos is a common pattern with fake accounts. A real pen pal is happy to keep writing where you are. - **Never send money or gift cards,** whatever the story. This is the single most reliable sign of a scam. - **Use the block and report buttons.** They exist for a reason, and you don't owe a stranger an explanation. - **Think before sharing a postal address.** On Postcrossing it's part of how it works; on chat apps it rarely needs to be. - **Write what's true, but not everything at once.** Anonymity makes honesty easier. It doesn't mean you need to say it all in the first letter. There's a longer version of this in [writing to strangers safely](https://kindredly.io/guides/writing-to-strangers-safely). ## Where Kindredly fits Kindredly is for people who want the oldest version of a pen pal: one stranger, real letters, and the slow feeling of something on its way. The things it does differently are the things we think make letters last. You're matched on how you write, not how you look. Nobody sees your name. Wren carries each letter, so every reply is something on its way to you. And after five letters each way, you both decide whether to trade names. What it isn't: it isn't a language-learning tool, it isn't a chat app, and it isn't a place to browse hundreds of profiles and pick. It's also young, so it's smaller than apps that have been around for years. If you want quick replies, corrections on your Spanish, or postcards from fifty countries, one of the apps above will suit you better, and that's fine. ## FAQ ### Are pen pal apps free? Most of them are free to start. Kindredly, Slowly, InterPals, HelloTalk and Tandem all let you write without paying, and Postcrossing is free apart from the cost of cards and stamps. The paid tiers add extras rather than unlocking the basic idea of writing to someone. ### What's the difference between a pen pal app and a language exchange app? A pen pal app is built around getting to know one person through letters. A language exchange app like HelloTalk or Tandem is built around practising a language with native speakers, usually by fast chat or voice. You can make friends on either, but the conversations feel very different. ### Can I have a pen pal without sharing my real name? Yes. Slowly uses nicknames and avatars, and on Kindredly nobody sees your name unless you both choose to trade them after five letters each way. On profile-based apps, you can still keep your full name, address and workplace to yourself. For more, see [anonymous penpals](https://kindredly.io/guides/anonymous-pen-pals). ### Is there a pen pal app that sends real letters? Postcrossing sends real postcards through the post, though it's one card per stranger rather than an ongoing pen pal, and it runs as a website rather than an app. For ongoing paper letters, older pen pal sites with snail-mail groups are the usual route. ### How long should I wait for a reply? On slow-letter apps, a few days is normal, and part of the point. On chat apps, a day of silence often means the person has moved on. Either way, don't write the same person three times in a row; write your next letter to someone new, and let the good ones find you. --- Kindredly is an anonymous penpal app that matches strangers by how they write. Kindredly · https://kindredly.io/