# Kindredly

> Kindredly is an anonymous penpal app that matches strangers by how they write.

You write a letter to nobody in particular. It lands first on the desks of strangers who write the way you do — matched by the rhythm and shape of your writing (how long your sentences run, where you pause, how evenly they run, whether you ask questions, how you end a thought), not by photos, profiles or location. When one of them writes back, you have a penpal. Nobody sees a profile or a photo of you; you are a number, like No. 4207. After five letters each way, either of you can offer your name, and names are swapped only when both of you choose to.

Everyone has a courier: a small bird who hatches from your first words, carries your letters, and gets hungry if you stop writing.

## Facts

- Platforms: an iPhone app (https://apps.apple.com/app/id6805318131) and the web (https://kindredly.io). One account works on both when you sign in with Google or email; Sign in with Apple is iPhone-only.
- Free: fifteen strangers' letters on your desk a day, five new letters of your own a day, up to five answers to strangers waiting on a reply at once, no limit on the letters inside a correspondence, your courier and every correspondence.
- First Class (optional, paid): no cap on new letters, rooms with a kindred that never close (on the free plan a room closes after thirty days without a word; a correspondence before names never does), voice letters (recorded in the iPhone app) and the courier's full wardrobe. Prices are shown before purchase.
- Languages: the web runs in English, 中文, Español, Português, Bahasa Indonesia, Français, Deutsch, Italiano, 日本語 and 한국어; the iPhone app in all of them but 中文. A letter on your desk in a language you don't read comes with a translate key.
- Safety: 18+ only; an anonymous number instead of a name; no photos until both people trade names; a safety check reads letters on their way to strangers' desks (it stops threats, harassment, sexual content involving minors, and attempts to swap contact details, social handles or money); report or block from any letter or room; when three different people report the same writer, that writer can no longer send letters.
- No ads, in the app or on the web.
- Kindredly is not a dating app: there are no profiles, no profile pictures and no swiping.
- How it differs from Slowly: Slowly matches people by interests and delays delivery by distance; Kindredly matches people by how they write and has no profiles at all. Side by side, with sources: https://kindredly.io/vs/slowly
- How it differs from InterPals: InterPals is a free, ad-funded pen pal site where you search member profiles by country, age and language; Kindredly has no profiles and matches by writing. Side by side, with sources: https://kindredly.io/vs/interpals

## Pages

Every page below, in every language it exists in, is also plain Markdown: add .md to its address (the home is https://kindredly.io/index.md, the Japanese home https://kindredly.io/ja.md), or request it with Accept: text/markdown.

- [Home](https://kindredly.io/): what Kindredly is, how it works, the FAQ.
- [How Kindredly works](https://kindredly.io/how-it-works): Write a letter to nobody in particular; it lands first with strangers who write like you. Trade one at a time; swap names after five each way, if you both want.
- [Is Kindredly safe?](https://kindredly.io/safety): You're a number, not a name. No photos until you both trade names, one-tap reports and blocks that stick. Kindredly is for adults, 18 and over.
- [A penpal app that finds people who write like you](https://kindredly.io/penpal): Kindredly is a free, anonymous penpal app. Write one letter; it lands first with strangers who write like you. No profiles, no photos.
- [Make friends online, without the small talk](https://kindredly.io/make-friends): Making friends as an adult is hard, and small talk makes it harder. Skip it: write one honest letter to strangers who write like you. Free, no profiles.
- [Find your soulmate friend by how they write](https://kindredly.io/soulmate): A soulmate friend is someone whose mind works like yours. Kindredly looks in writing: no photos, no swiping, letters from strangers who write like you.
- [Talk to strangers, by letter](https://kindredly.io/strangers): Talk to strangers without video, live chat or giving yourself away. Kindredly is letters: anonymous, matched by how you write. Free, 18+.
- [What First Class adds](https://kindredly.io/first-class): Free: fifteen letters on your desk a day, five of your own, no limit inside a correspondence. First Class lifts the cap, keeps rooms open, adds voice.
- [Kindredly vs Slowly](https://kindredly.io/vs/slowly): Kindredly vs Slowly (October 2026): how each finds you a penpal, how long letters take, what's free, age limits, and when Slowly is the better pick.
- [Kindredly vs InterPals](https://kindredly.io/vs/interpals): InterPals is a free, ad-funded pen pal site you search by country, age and language. Kindredly matches strangers by how they write, with no profiles.
- [Kindredly vs Hi! Penpal!](https://kindredly.io/vs/hipenpal): Hi! Penpal! is a free penpal site with Google ads where you search profiles by country, language and age. Kindredly matches you by how you write.
- [Writing aura test](https://kindredly.io/aura): a free writing personality test — three written answers; which of twelve writers you are, and the classic writer whose sentences move most like yours.
- [Just look](https://kindredly.io/look): today's letters, no account needed.
- [Start writing](https://kindredly.io/join): create an account.
- [Guides](https://kindredly.io/guides): guides to finding a penpal, first letters, questions that get a reply, writing to strangers safely and penpals in another language.
- [iPhone app](https://apps.apple.com/app/id6805318131): Kindredly on the App Store.

## Guides

- [The best anonymous journaling apps: where your private pages actually live](https://kindredly.io/guides/best-anonymous-journaling-apps): A private journal only works if you trust where it goes. Eight apps compared on accounts, storage, encryption and price, and what to do when a page wants a reader.
- [The best apps to vent anonymously, when you'd rather write it out](https://kindredly.io/guides/best-apps-to-vent-anonymously): Some things are easier to write to someone who doesn't know you. Seven places to vent anonymously, what each one is really like, and how to keep it safe.
- [The best pen pal apps in 2026, and which kind of pen pal you want](https://kindredly.io/guides/best-pen-pal-apps): 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.
- [The pen pal book: Dathan Auerbach's Penpal, without spoilers, and nine books like it](https://kindredly.io/guides/penpal-book): Two well-known novels answer to "pen pal book". This is mostly about Penpal, Dathan Auerbach's 2012 horror novel that began on Reddit: what it is, where it came from and why it keeps turning up on BookTok, without spoilers. Plus the other Pen Pals, including J.T. Geissinger's dark romance, and nine books like Auerbach's.
- [Anonymous penpals: how to write to a stranger without giving yourself away](https://kindredly.io/guides/anonymous-pen-pals): Some things are easier to tell a stranger. What to put in a Reddit post, what to leave out, and four tests for any anonymous penpal app.
- [Pen pal letter examples: 5 complete letters, and why each one works](https://kindredly.io/guides/pen-pal-letter-examples): Five complete penpal letters: a first one, a reply, a sorry-I-went-quiet, a fifth and a 96-word one, each with a short note on why it works.
- [Twelve novels made of letters, for people who loved The Correspondent](https://kindredly.io/guides/novels-made-of-letters): The Correspondent sent a lot of people looking for more novels written in letters. Here are twelve, spanning two centuries, and the reason the form keeps coming back.
- [A penpal in another language: how to write when you don't share one](https://kindredly.io/guides/penpal-in-another-language): You do not need to be fluent to have a penpal in Japanese, German or Portuguese. You need to write small, write true, and let the translation carry the rest.
- [Writing to strangers safely: what to share, what to keep, and when to walk away](https://kindredly.io/guides/writing-to-strangers-safely): The safest penpal is the one who never needed your name to write to you. A short guide to sharing, keeping, and noticing when someone wants more than a letter.
- [Why writing to a stranger lowers your stress (and texting a friend doesn't)](https://kindredly.io/guides/writing-to-a-stranger-is-good-for-you): Writing things down helps. Talking to strangers helps more than we expect. Put them together and you get the oldest stress-relief tool there is: a letter to someone who doesn't know you.
- [What to write in your first letter to a penpal (with 12 openers)](https://kindredly.io/guides/first-letter-to-a-penpal): The first letter to a penpal is the one most people get wrong, because they write it like a profile. Here is the shape that gets answered, and twelve lines to start it with.
- [What is a penpal? The meaning, the history, and why it's back](https://kindredly.io/guides/what-is-a-penpal): A penpal is a friend you know only through letters. That has meant a lot of things since 1936 — and in 2026 it means something slightly new.
- [How to find a penpal in 2026 (one who writes back)](https://kindredly.io/guides/how-to-find-a-penpal): Finding a penpal is easy. Finding one who writes back is the whole problem. Here is where people look, why it usually fails, and the three things that fix it.
- [66 questions to ask a penpal (that actually get a letter back)](https://kindredly.io/guides/questions-to-ask-a-penpal): A penpal is not a form to fill in. The questions that start a real correspondence are small, specific and a little unfair — and there is a trick to asking them.
- [Your Words Are Your Fingerprint](https://kindredly.io/guides/words-are-your-fingerprint): Two statisticians once identified James Madison by counting how often he used the word "upon." The part of you a stranger meets in your writing isn't your name or your face — it's your function words. On language style matching, and why prose beats profiles.

## Other languages

- [Kindredly in 简体中文](https://kindredly.io/zh)
- [Kindredly in Español](https://kindredly.io/es)
- [Kindredly in Português](https://kindredly.io/pt)
- [Kindredly in Bahasa Indonesia](https://kindredly.io/id)
- [Kindredly in Français](https://kindredly.io/fr)
- [Kindredly in Deutsch](https://kindredly.io/de)
- [Kindredly in Italiano](https://kindredly.io/it)
- [Kindredly in 日本語](https://kindredly.io/ja)
- [Kindredly in 한국어](https://kindredly.io/ko)

## Optional

- [Support](https://kindredly.io/support)
- [Privacy](https://kindredly.io/privacy)
- [Terms](https://kindredly.io/terms)