良い
1日経ったら保存できなくなりますが、経つ前に保存すれば問題ないので特に不便もないです。!
Response from developer
レビューありがとうございます!部活を頑張るお友達への応援メッセージ、素敵な使い方で開発者としてとても嬉しいです🔥 「1日経ったら保存できなくなる」の点、最新バージョンで受け取った手紙を7日間いつでも見返せる・保存できるように改善しました。よろしければアップデートしてお試しください。 これからもトビレターをよろしくお願いいたします。

This app offers a private digital space for two people to exchange handwritten notes and drawings. It allows for stroke-by-stroke replays of drawings, emoji reactions, and even turns drawings into melodies. Perfect for couples, long-distance relationships, or close friends wanting a unique way to communicate.
3.0.3
October 27, 2026
More time with the letters you love — received letters can now be viewed and saved for 7 days, up from 1 day.
No ads, unlimited sends, keep all history
レビューありがとうございます!部活を頑張るお友達への応援メッセージ、素敵な使い方で開発者としてとても嬉しいです🔥 「1日経ったら保存できなくなる」の点、最新バージョンで受け取った手紙を7日間いつでも見返せる・保存できるように改善しました。よろしければアップデートしてお試しください。 これからもトビレターをよろしくお願いいたします。
Sylph is a communication app designed for two people to exchange handwritten notes and drawings. It focuses on a private, intimate experience, allowing users to replay drawings stroke by stroke and even turn them into melodies.
Sylph is a private space for just two people, with no public timelines, like counts, or followers. It's designed for one-to-one communication, ensuring your exchanges remain personal.
Yes, you can reply to letters by drawing back. The 'Draw on top' feature allows you to add your lines directly over the received picture, creating a combined drawing.
Sound Doodle is a feature that turns your drawings into little melodies. When enabled, the playback of your drawing creates a unique musical accompaniment.
Yes, Sylph contains advertisements. Users can experience an ad-free environment by subscribing to Sylph Prime.
Sylph offers a Prime subscription with weekly and monthly plans. Prime includes full history access, an ad-free experience, and the ability to connect with up to 10 special people.
You can manage or cancel your Sylph Prime subscription in your Apple ID settings. The subscription renews automatically unless canceled at least 24 hours before the end of the current period.
Sylph is available on iPhone and iPad devices, indicated by its compatibility with iOS.