Meet Monoline - Your personal micro journal.

Write down your thought freely and quickly, and sync automatically across devices on different platforms in real-time. Put it simply, it's a messenger app but only for sending to yourself 🤯


Simple and intuitive

You want to write down your brilliant idea before it's gone. You don't care about the title of your note or which category it belongs to. Let along with the font and formatting. Monoline lets you focus on taking notes once again.


Worry about sending an email or a message to the wrong person while it was for yourself once again? Monoline is designed only for you, so you can always be sure that you won't send it to the wrong person by mistake.


The communication between your devices and our servers is all encrypted. Also, more security features such as device pin number and biometric authentication are coming soon to make it even more secure!


Whether you are using an iPhone, iPad, Android phone, or Android tablet, or if you want to use the Monoline app on your Mac, Windows, or Linux machine, we have you all covered!

Seamless Sync

You can sign in to your Monoline account on different devices and see the same message timeline sync in real-time, making it easy to share a link, file, or code across devices.

Powerful search

All messages posted on Monoline are easily searchable. You can add hashtags to make your messages organized. You can also use special hashtags to filter uploaded files, links, or pieces of code you posted.


We are working hard on adding new awesome features to the Pro plan!

$ 0


Enjoy your free personal micro journal!

  • Unlimited Messages
  • 200 MB Storage
  • 5 MB Upload File Limit
  • 2 Devices
$ 2.99


$ 2.49


For advanced users, billed $29.88 annually.

$ 3.99


$ 3.49


For advanced users, billed $3.49 monthly.

  • Unlimited Messages
  • 1 GB Storage
  • 25 MB Upload File Limit
  • Unlimited Devices
  • New message notification
  • More to come soon ...

* The price was raised on November 15th 2022, and we will keep improving the app and raise price accordingly. Subscribe now before it goes up again! Read more.