# One Envelope: Typed Letters — Write letters on a typewriter

> Write letters on a typewriter (iPhone/iPad app by Taeyoung Park.)

- Source: https://appshunter.io/ios/app/one-envelope-typed-letters/id6818967272 (this page in markdown: same URL + `.md`)
- Developer: [Taeyoung Park](https://appshunter.io/developer/1828694397)
- Category: Lifestyle, Social Networking
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 64 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan), Vietnamese
- Released: 2026-10-08
- Data updated: 2026-10-10
- User reviews in markdown: https://appshunter.io/ios/app/one-envelope-typed-letters/id6818967272/reviews.md

## What is One Envelope?

Lighter than a handwritten letter, more thoughtful than a quick message.

Type your words on a mechanical typewriter, add a stamp, and seal the envelope. Send it as a link, and the recipient opens it like tearing open an envelope. If they have the app, it stays in their inbox. You can also set an opening day, so it opens on a birthday or a holiday morning.

Links work anywhere in the world. Only the first device that opens a link can open it again, and you can recall a letter at any time.

When you'd like it on paper, we can print it and send it by post. Physical letters can only be sent to addresses in Korea. We hand them to Korea Post within 2 business days after payment, and delivery time depends on the post office.

- Type on a typewriter with Korean and English keyboards
- Key sounds, a return lever, and a bell at the end of the line
- Decorative stamps inspired by Korean folk art
- Send a link right away, or keep it sealed until a date you choose
- Received letters are kept in your app inbox
- When you reply, the recipient's name is filled in for you
- Physical letters to addresses in Korea by standard or tracked mail

Made by Teo Studio (Taeyoung Park)
Contact: info@teostudio.org


## Version history (last 3 releases)

### 1.0.2 — 2026-10-09

A short intro now shows newcomers how a letter travels.
The typewriter keyboard is bigger.
Stronger privacy: usage statistics are sent only with your consent, and letters saved on your device are encrypted.

### 1.0.1 — 2026-10-08

One Envelope now speaks 10 languages. You can also contact us right from the app.

### 1.0 — 2026-10-07

No release notes.

## More apps by Taeyoung Park

- [Stando - Todo & Stand Clock](https://appshunter.io/ios/app/stando-todo-and-stand-clock/id6756882347)

All apps by Taeyoung Park: https://appshunter.io/developer/1828694397

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-10.*