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One Line
Write a line anywhere on iPhone — it sorts itself
Type "dentist tomorrow 3pm" and it becomes an event. "call mom" becomes a to-do. Everything else stays a note. Three screens — Today, Notes, Calendar — and one box to write in. Built for capture on iOS: home and lock screen widgets, share sheet from any app, reminders, dictation, and text lifted out of screenshots. The sorting is a dictionary and a date parser, not an AI. It runs on device, and nothing leaves your phone until you switch sync on.
Top comment
Hey Hunters 👋 I'm Chosk, an indie iOS dev from Seoul. One Line is the note app I kept wanting: one input box, and whatever you write goes where it belongs. What it does - Write "dentist tomorrow 3pm" → calendar event. "call mom" → to-do. Anything else → note. - Three screens: Today (what's due and scheduled), Notes (everything without a date), Calendar (everything with one). - Wrong guess? One tap moves it. No folders, no tag syntax, no rules to memorize. Capture without opening the app - Home and lock screen widgets - Share sheet — send a link, a page or a photo from any app straight into a line - Reminders, dictation, and text pulled out of screenshots - Korean and English both parse How it decides A dictionary and a date calculation, not an AI. That means it's instant, it's the same answer every time, and it works with the phone in airplane mode. Until you turn sync on, nothing leaves the device — no analytics SDKs, no ads. Pricing Free for notes, to-dos, events, editing and sync. Pro (in-app) adds cloud storage for attachments, screenshot text extraction and dictation. There's a web version at oneline.date if you want to try it before installing, but the iPhone app is where it's meant to live. I'd love feedback on the classifier — especially where it guesses wrong on your phrasing. Reply with the line and I'll fix it 🙏
About One Line on Product Hunt
“Write a line anywhere on iPhone — it sorts itself”
One Line was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #24 on the daily leaderboard. Type "dentist tomorrow 3pm" and it becomes an event. "call mom" becomes a to-do. Everything else stays a note. Three screens — Today, Notes, Calendar — and one box to write in. Built for capture on iOS: home and lock screen widgets, share sheet from any app, reminders, dictation, and text lifted out of screenshots. The sorting is a dictionary and a date parser, not an AI. It runs on device, and nothing leaves your phone until you switch sync on.
On the analytics side, One Line competes within iOS, Productivity and Notes — topics that collectively have 780.4k followers on Product Hunt. The dashboard above tracks how One Line performed against the three products that launched closest to it on the same day.
Who hunted One Line?
One Line was hunted by chosk. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of One Line including community comment highlights and product details, visit the product overview.