Public beta · iOS

Email, simplified.

Less to read. More to know.
Finally, an inbox that doesn’t slow you down.

Built for iPhoneDesigned for on-device AI
Sarah Chen

Q4 launch is Oct 15. Resource estimates are due Friday.

Summarized on your device
Summary card
Sarah Chen
Oct15
Q4 Kickoff Meeting

Tue, Oct 15 · 10:00 AM

Event card
Sarah Chen
mail.google.comIndustry report: Cloud adoption up 34%.

AI tooling now used by 78% of teams.

Preview card
Sarah Chen
4 launch screenshots

One clean bubble instead of a pile of attachments

Gallery card
Sarah Chen
zip
Launch assets.zip

24.8 MB

pdf
Launch brief.pdf

2.4 MB

Attachments card
Sarah Chen
Sarah Chen

Q4 launch is Oct 15. Resource estimates needed by Friday. Twice-weekly standups start next week.

local summary when supported
Today 10:42 · primary
Got it — sending estimates tomorrow.
Today 10:43 · You
Sarah Chen
docs.google.comQ4 Resource Planning Sheet

docs.google.com/spreadsheets/d/1x...

Today 10:44 · primary
Sarah Chen
Sarah Chen

That sheet has the latest headcount numbers. Can you add the engineering estimate?

summarized
Today 10:45 · summarized
notion.soDraft launch checklist

notion.so/q4-launch-checklist

Today 10:46 · You
Yep, I pulled my notes into this checklist too.
Today 10:47 · You
Sarah Chen
Oct15
Q4 Kickoff Meeting

Tue, Oct 15 · 10:00 AM

Today 10:48 · primary
Send the resource estimate?

Draft ready · tap to review

Today 10:49 · You
Sarah Chen
Sarah Chen

Great. I also dropped screenshots from design into the thread.

Today 10:50 · primary
Sarah Chen
4 launch screenshots
Today 10:51 · primary
Oct15
Resource review

Fri, Oct 11 · 2:00 PM

Today 10:52 · You
Friday review is on the calendar now.
Today 10:53 · You
Sarah Chen
zip
Launch assets.zip

24.8 MB

pdf
Launch brief.pdf

2.4 MB

Today 10:54 · primary
Sarah Chen
Sarah Chen

Perfect. The calendar hold helps. I’ll use that for design and QA as well.

Today 10:55 · primary
linear.appLaunch blocker board

5 open items · 2 owners needed

Today 10:56 · You
Sarah Chen
mail.google.comIndustry report: Cloud adoption up 34%.

AI tooling now used by 78% of teams.

Today 10:57 · primary
I checked the screenshots. Onboarding needs one more pass.
Today 10:58 · You
zip
Team estimates.xlsx

1.8 MB

pdf
Launch brief.pdf

2.4 MB

Today 10:59 · You
Sarah Chen
Sarah Chen

Great, send that over and I’ll fold it into the launch brief.

Today 11:00 · primary
These look great 👍
Today 11:01 · You
Reply...
01

Private

by design

Built around on-device AI

02

3x

less reading

Catch up faster

03

Instant

context

Know what matters

04

1

clear thread

Everything in one place

Works with GmailPrivate by designMade for iPhone
Inbox
PrimaryUpdatesPromotionsAll Mail
SC
Sarah Chen

Q4 Planning — Action Items

Hi team, Following up on yesterday's sync...

FI
Figma

3 comments on Homepage Redesign

Alex and 2 others commented on your design...

SC
Sarah Chen

Re: Q4 Planning

Quick question — are the standups Tue/Thu or daily?

AR
Alex Rivera

Quick question about the API

Hey, is the /users endpoint paginated? I'm getting...

AB
Airbnb

Your reservation is confirmed

You're all set! Your stay in San Francisco from...

SC
Sarah Chen

📎 Re: Re: Q4 Planning — quick update

Also attaching the resource template for Friday.

MJ
Maya Johnson

Re: Team dinner next week?

Thursday works for me! How about that new place on...

GH
GitHub

4 new dependabot alerts

dependabot[bot] opened pull requests in your repo...

Too much to unpack

Your inbox asks for too much.

Every message arrives with a little more work attached. More context to find. More threads to follow. More reasons to come back later.

  • Replies that need context before they can be answered.
  • Long chains that make the next step hard to see.
  • Important details hidden inside noise.

Open the tab.

Look for the point.

Leave it for later.

Email that feels like chat

Email should feel as clear as Messages.

Most email makes you read backwards to understand what happened. Chyn turns long threads into a clean conversation, with the important parts already in view.

Same email. Less effort. A better way to keep up.

What people notice first

Built for people who live in email.

Chyn helps you understand, organize, and answer email without losing your place.

01Clear decisions

I can see the decision without reading the whole chain again. It makes email feel calm.

5 of 5

Sarah Chen

Product Design Lead / Figma

OutcomeFaster handoff
02Follow-ups

Follow-ups are easy to spot, and the important details are already there. I clear email faster.

5 of 5

Maya Okonkwo

Head of Operations / Airbnb

OutcomeNo missed replies
03Thread clarity

It keeps the thread easy to trust. Links, files, and next steps are right where you expect them.

5 of 5

Alex Rivera

Engineering Manager / GitHub

OutcomeEasier reviews

Chyn FAQ

Questions about the email app that makes your inbox easier to understand.

Clear answers about chat-like email, AI summaries, Gmail and iPhone support, privacy, and how Chyn compares with familiar email apps.

01AI

How can I summarize long email threads?

You can use an AI email app like Chyn to summarize long email threads automatically. Chyn highlights key points, decisions, and important details so you do not have to read every message.

02Inbox

How can I read emails faster?

Chyn helps you read emails faster by turning long threads into clear conversations and surfacing the most important information first.

03Inbox

How do I deal with email overload?

Chyn reduces email overload by summarizing messages, grouping conversations, and showing what matters most, so your inbox feels easier to manage.

04General

What is Chyn?

Chyn is an iPhone email app that turns long, messy email threads into simple, clear conversations, so you can understand what matters and move on.

05Conversations

How does Chyn simplify email threads?

Chyn groups related emails into one conversation, summarizes the important parts, and keeps useful details like links, files, and next steps close at hand.

06Smart Labels

What are Smart Labels?

Smart Labels are Gmail labels plus Gmail filters, made easier to create from Chyn. They automatically label matching emails so your inbox can organize itself around the things you care about.

07Conversations

Can Chyn help me reply faster?

Yes. Chyn shows the context of a conversation before you reply, helping you answer without rereading the entire thread.

08AI

Does Chyn summarize emails with AI?

Yes. Chyn uses AI to summarize email threads and highlight key points, decisions, and next steps, so you do not have to read every message.

09Others

Does Chyn work with Gmail?

Yes. Chyn connects directly to your Gmail account and syncs your existing inbox. Nothing changes except how easy it is to use.

10Others

Is Chyn available on iPhone?

Yes. Chyn is an iPhone email app designed specifically for iOS, with a focus on speed, clarity, and simplicity.

11Privacy

Is Chyn private and secure?

Yes. Chyn is designed as a privacy-first email app with on-device processing when supported. Your email data stays under your control.

12Privacy

Does Chyn store my emails?

Your emails remain in your Gmail account. Chyn processes and presents them without becoming a separate email storage service.