memost Manual

A guide for getting started with memost — from creating your space to editing and syncing, step by step.

Getting started — creating a space

Everything you keep in memost lives in a space — a local store on your own device, with note contents stored encrypted. When you first launch the app, the Get started with memost screen asks how you want to begin.

Whoever creates a space is its owner. Each space has one space password, and only owners know it. The five-word key phrase you use to share the space with other devices is shown under Sync key phrase in the space's info page.

Important: Keep your space password somewhere safe. Your data is stored only on your devices, so if you forget the password, the space cannot be opened on your owner devices.

Installing on Linux

memost runs on Ubuntu 24.04 or later. Download the file that matches your computer: most PCs are x86_64; ARM machines such as a Raspberry Pi are ARM64. Running uname -m in a terminal prints x86_64 or aarch64.

  1. Open a terminal in the folder you downloaded it to and install it with apt, which also brings in the libraries it needs (GTK 4, libadwaita, WebKitGTK):
    cd ~/Downloads
    sudo apt install ./memost_0.43.0-64_amd64.deb
    On an ARM64 machine, use memost_0.38.4-47_arm64.deb instead. Use apt install ./… rather than dpkg -i — only apt fetches missing libraries.
  2. Launch memost from your app list, or type memost in a terminal.
  3. On the first screen, choose Use on this device only or Log in and sync. Everything from here works as on the Mac.
Note: The package also installs an AppArmor profile (/etc/apparmor.d/memost) so the editor opens under the stricter security policy of Ubuntu 23.10 and later — there is nothing to configure. A space password saved with “Remember on this device” — and the device key that opens a space you use as a participant (Unlock with device authentication) — is kept in GNOME Keyring.

To update, download the new file and install it with the same command. To remove the app, run sudo apt remove memost; your spaces (~/memost) and notes stay where they are.

Using a headless Linux server as the host

If you keep a Linux server running, memost can run on it as the host, so your other devices sync with it over the internet. Hosting needs a PRO subscription, and an account has one host at a time — if another device is your host, turn hosting off there first.

# 1. Join the space as an owner (approved automatically while memost runs on another device)
memost join --phrase "five words of the key phrase" --email you@example.com

# 2. Store the space password for the service (find the space ID with memost vaults)
MEMOST_CREDENTIALS=file memost unlock --vault <space ID>

# 3. Sign in to PRO (approve at the address shown), then turn hosting on
memost pro login
memost host enable

# 4. Run it as a service that keeps running after you log out
systemctl --user enable --now memost-host
loginctl enable-linger "$USER"

# Check on it
memost host status
Firewall: The host opens a UDP port (63820 by default) on your router with UPnP. If you use a firewall (ufw), allow it with sudo ufw allow 63820/udp; if your router has no UPnP, forward that port to the server by hand. The memost app and the host service do not run at the same time under one user account — stop the service first with systemctl --user stop memost-host to use the app.

Sections and folders

Notes live in folders, and folders are grouped into sections. A section sits one level above folders — use it to separate folders that serve different purposes, such as work and personal records, and keep the sidebar tidy.

Folders you already had are filed into a Home section automatically, so there is nothing to move.

Working with sections

In the sidebar, sections (Home and so on) appear as top-level folder rows. Click a name to open that section's folder list; use the arrow to collapse or expand it.

Ordering and moving items

Inside favorites, sections, and folders you can drag items into the order you want. Sub-folders appear above notes, and reordering happens within each of those groups.

As you drag, a blue insertion line between rows shows where the item will land. Drop it onto a folder instead and it moves inside — empty and collapsed folders included.

Per-device support: Sections are available on Mac, iPad, iPhone, Windows, and Linux, and section names and order sync between devices.

Favorites

Right-click a note or folder ▸ Add to Favorites to pin it to the sidebar's favorites. Favorites is a row with a star icon that you collapse and expand with its arrow; right-click ▸ Remove from Favorites takes an item off.

Favorites are personal. They are shared only among devices on the same account; other owners' and participants' favorites in the same space never show in your sidebar.

Duplicating a note

Right-click a note in the sidebar or a folder list ▸ Duplicate Note to create a copy right below it in the same folder, named with “(copy)” at the end. Images and attachments are shared with the original, and databases inside the note are copied along with their rows.

Finding where a note lives

Open a note and its place shows under the tab bar as section › folder. Click any crumb to go there. Turn it off under Settings ▸ General if you'd rather not have it.

Previewing inside a folder

Open a folder and a preview panel sits on the right. Pick an item in the list and its details appear at the top, its contents below.

Drag the divider between the list and the panel to change its width. The button that opens and closes the panel is at the right end of the folder screen's bottom bar. The width and whether the panel is open are the same across every folder tab and every panel, and survive a restart.

Per-device support: the preview panel is available on Mac.

Daily notes and the calendar

Use daily notes when you want to keep a record by date. Today's note opens in one step, and is created for you if it doesn't exist yet.

Views

Four views are available: Monthly, Weekly, Daily, and List. In the Daily view you can pick a date and create that day's note directly, and turning on daily notes only narrows the list to dated records.

Keeping it tidy

If you don't use daily notes, choose hide from the sidebar in Settings to take the item out of the list.

On the daily-notes page, right-click a note's name for open folder, open note, and delete.

To-dos

Checklist items scattered across your notes can be read on one page. Click To-dos in the sidebar and every checklist item in the space appears, grouped by the note it came from.

Databases

Keep records as structure, in rows and columns. It suits anything where the same kind of entry repeats — books you have read, contacts, work in progress.

The important part is that every row is itself a note. Open a row and the block editor you already use opens, ready for as much body text as you like, with the same encryption, syncing, trash and version history any other note gets.

Creating one

Five layouts

The same records, seen differently.

Saved views

Sorting, filters, grouping, column widths and which columns show are saved together as a view, and tabs along the top switch between them — "this month" and "everything" as two views, say.

Column types

A number column has its own display format — currency symbol, percentage, decimal places, thousands separator.

A date column picks its look under Date format: System setting, With weekday, Y-M-D, Y.M.D, M/D/Y or D/M/Y. Turn on Include time to keep hours and minutes too. If none of these fits, choose Custom and type a pattern.

  • yyyy or yy is the year (2026, 26), M or MM the month (4, 04), d or dd the day (4, 04), and HH:mm the time.
  • The weekday is E: E gives the short name (Wed), EEEE the full one (Wednesday).
  • For November 4, 2026, yy-M-dd (E) shows 26-11-04 (Wed) and EEEE, MMMM d, yyyy shows Wednesday, November 4, 2026.
  • Weekday and month names follow the system language — on a Korean system E shows 수. To put letters into the pattern as plain text, wrap them in single quotes, like 'at'.

The format only changes how a date looks. The stored value stays the same, so sorting, filters and groups still follow date order whatever the format.

Working with rows

Note: sending a database to the trash takes its row notes with it. Rows do not appear separately in a folder's note list — they live inside the database.
Per-device support: available on Mac, iPhone and iPad. On iPhone and iPad a database fills the screen.

Block editor

Notes in memost are made of blocks. Paragraphs, headings, lists, to-dos, images — each is a block you can restyle in one step and move anywhere in the document.

Slash commands

Type / anywhere while writing to open the styles and commands menu. Pick headings, lists, to-dos, toggle lists, quotes, dividers, and more — instantly.

Toggle lists

A toggle list is a block you can fold. Click the triangle in front of it and everything inside is hidden, which is handy for keeping detail tucked away in a long note. You can nest other blocks inside one to build up levels.

Restyle with shortcuts

Shortcuts are the fastest way to restyle a block. For example, Cmd+1 (Ctrl+1 on Windows) turns the current block into Heading 1. See the shortcuts table below for the full list.

Styling part of a block — quick-edit toolbar

To restyle only part of a block, select the text you want by dragging. The quick-edit toolbar appears, letting you apply bold, italic, colors, highlights, and more on the spot.

Moving blocks

Grab the handle on the left side of a block and drag it to move the block anywhere in the document.

Drawing tool

The drawing tool lets you add hand-drawn sketches to a note — great for quick idea sketches and simple diagrams.

Styling notes

Make each note look exactly how you want. In note settings, you can adjust:

Advanced: You can edit the theme CSS directly to create your own theme that applies by default.

File attachments

Store any file in a note or folder — no need to keep notes and their related files in separate places.

Add files by dragging them into a note or choosing them from the attachment menu. Attachments are stored alongside your notes as the original files — they are not encrypted. That is deliberate: open a Word document or PDF in another app, edit it, and the change lands in that very file inside the space.

Dragging files in

Drag a file from Finder or any other app onto the memost window and it is attached right where you dropped it. There are four places to drop.

When there are many files or large ones, you see the progress as they come in, and anything that could not be brought in is named along with the reason.

Dragging in a folder: a folder holds no bytes of its own, so memost asks once and then saves it as a folder shortcut. It sits in the list like any other attachment, and opening it takes you to that folder. A shortcut points at a path on that device, so it will not open on your other devices.

You cannot drop onto the attachments, tags, calendar, tasks, graph, or trash screens, or onto a section name. A no-entry cursor appears there.

Marking up a PDF

You can mark up a PDF opened inside a note, and what you add is saved into the PDF file.

Note: The existing attachment is updated in place, so any other note pointing at that PDF shows the marked-up version, and the changed file syncs to your other devices.

Managing attachments

Click Attachments in the sidebar to see every attachment in the space on one page — images placed in notes, cover images, and files filed into a folder on their own.

Multi-panel view

Open up to four documents side by side, and compare translations or related documents at a glance.

  1. Tap the square icon at the top right of the screen.
  2. Choose the number of panels and their layout.
  3. Open the document you want in each panel.
Per-device support: Mac supports up to four panels, iPad supports dual panels, and iPhone does not support multi-panel view.

Reading mode

When you want to focus on reading, or to present without the editing tools getting in the way, switch to reading mode.

  1. Tap the eyeglasses icon at the top of the screen.
  2. Editing locks, and you can only scroll through the content.
  3. Tap the eyeglasses icon again to return to editing.

Adjusting the text size

On Mac, hold Shift and scroll, or press + / -, to step the size by 10%. Scrolling without Shift still scrolls as usual.

On iPad, pinch with two fingers.

On Windows, press Ctrl++ / Ctrl+- to step the size, and Ctrl+0 to return to normal. Esc — or the eyeglasses icon again — leaves reading mode.

The text reflows rather than the screen magnifying, so lines never run off the side. The size you settle on is remembered, and applies the next time you open reading mode.

Tip: This is especially handy when an accidental edit would be costly — while presenting, or when reviewing a note before printing it.

Printing

You can print a note exactly as it appears on screen.

  1. On Mac, choose File ▸ Print, or press Cmd+P.
  2. Check the preview in the system print dialog and print.

iPhone and iPad print too; on both the system print sheet acts as the preview.

On Windows, choose Print from the menu or press Ctrl+P to open the print dialog. Margins are set in that dialog rather than in the page setup below.

The editing toolbar is left off the page. Styles you set on the note — font, block spacing, note background colour — are kept, so the printout matches what you were looking at.

Setting the margins

Choose File ▸ Page Setup… to open the Print tab in Settings. Set the top, bottom, left, and right margins in millimetres; the values you choose apply to every print from then on, on Mac and on iPhone and iPad alike.

Note: On Mac, Cmd+P can be rebound under Settings ▸ Shortcuts, and printing is disabled in a panel that holds no note, such as a folder list or the Graph tab.

Syncing devices

memost syncs automatically without any server — your devices exchange data directly, peer to peer.

Adding a device

There are two ways to add a device.

  1. On a device you already use, find the five words under Sync key phrase in the space's info page.
  2. Install memost on the new device and, on the start screen, choose Join another device's space with its key phrase.
  3. Pick how to join (participant or owner), enter the key phrase and your email, and press Send join request. Keep memost open on both devices, on the same Wi-Fi.
  4. The join request appears on an owner device. Enter the space password and press Approve.
  5. On the new device, choose where to keep the space. The folder takes the name the owner gave the space when creating it.
Note: a participant device never asks for the space password. Once approved, it opens the space with that device's own lock — Touch ID, Face ID, Windows Hello, or the device passcode. On Linux it uses a device key kept in the keyring (Unlock with device authentication).

Owners and participants

When joining you pick owner or participant.

Only owners change the space password, under Change space password in the space's info page. Other owner devices ask for the new password once the next time they open; participant devices are not affected. If a co-owner leaves, change the password. You can also change someone's role (making a participant an owner, for example) and folder permissions, entering the space password once to do so. An email is only a label telling people apart; on its own it grants nothing.

Worth doing: keep two or more owner devices. If every owner device is gone, the remaining devices go on syncing, but no new owner device can be added.

Trusted devices

Only devices an owner has approved and signed receive the space's contents. Anything that changes the member list — approving, removing, changing roles or permissions — asks for the space password once to attach an owner signature.

  • The space's info page shows each device's verification status. Devices without a signature appear under Devices waiting for confirmation; compare the device key fingerprint shown in that device's own space info before confirming it.
  • The list of devices waiting for confirmation is shared among owner devices, so a request from a phone that only reaches your host can be confirmed on any owner device.
  • Reinstalling the app or receiving the space again is recognised as the same device. Unsigned devices that have piled up can be cleared at once with Clean up old unverified devices… under Users in the space's info page.
  • The first time you open a space after updating to 0.38, it moves to the new scheme, and an owner is walked through Start owner signatures or the devices waiting for confirmation.
If you use several devices: update all of them to 0.38 or later. An older device is treated as unverified in a space with participants and receives only its structure. Update the computer you use as the host first.

Removing a device

A device can be removed from the space in the space's info page (you enter the space password once). The removed device locks the space and asks whether to move its copy to the trash or leave it alone.

One device, several accounts

Under Settings ▸ PRO you can add several memost accounts and choose the default account and the account that acts as the host. Each space's info page lets you pick which account it syncs with. Disconnecting an account from this device tidies away that account's spaces safely.

How syncing works

Tip: If syncing doesn't start, check that both devices are on the same Wi-Fi network and that the app is running on both.
Keep versions in step: joining and syncing changed in 0.26.0, so it does not sync with earlier versions. If one side is older, you are told to update the other device. Please update every device you use together.

Link from one document to another inside your space, or embed external web links in your notes.

There are two, depending on how wide you want to look.

Across the whole space

Cmd+K searches the entire space. Highlight a result and a preview pane shows the start of that note, so you can tell whether it's the right one without opening it. You can also narrow the search to a folder or by condition.

Within the open note

Cmd+F searches only the note you're looking at.

Importing

Documents made in other apps can come into memost as notes. What you can bring in today: Evernote (.enex), web pages (.html), ebooks (.epub), Markdown (.md), PowerPoint (.pptx, .ppt), and a note file (.mmp) exported from memost. You can also pick a folder and bring in everything inside it.

Importing starts from three places.

memost works out what kind of file you picked, so there is only one Import… command. For most formats one file becomes one note, named after the file. Ebooks and folders are the exception — they build folders and split the contents up, as described below.

Evernote (.enex)

Import a file exported from Evernote and each note becomes a note. The body and attachments come across, and so does this:

Tip: point the import at an Evernote export folder as a whole and it handles the .enex files inside without being told.

Web pages (.html)

Pick a saved web page and memost asks how you want it first. There are two answers.

Ebooks (.epub)

A book becomes a folder named after it, with one note per chapter. Note titles come from the names in the book's table of contents.

Links that ran between chapters become links between notes, so you can jump from one chapter to another as you read. The book's images come in too.

Importing a whole folder

Pick a folder instead of a file and memost walks through it, importing each file the way its kind deserves. Subfolders are recreated as memost folders with the same structure.

A file it cannot bring in does not stop the rest, and you are told afterwards which files were skipped.

Markdown (.md)

Headings, paragraphs, lists, task lists, quotes, code blocks, rules and tables all carry over, and so do bold, italic, strikethrough, code and links.

Note: an image in a Markdown file points at a web address, so it is not an attachment in your space. It comes in as a link on its alt text instead. HTML written directly into the document is dropped.

PowerPoint (.pptx, .ppt)

Each slide is drawn as an image and they go into one note, in order. memost asks once before doing it this way.

Per-device support: the slides are drawn with LibreOffice, so importing works on a Mac or a Windows PC that has it installed. PowerPoint files cannot be imported on iPhone or iPad.

memost notes (.mmp)

An .mmp file is a single note exported from memost. It carries the body and settings together with every attachment the note uses, so it can move to another person or another space without the space password.

On import, the attachments it carries come in as fresh attachments in this space and the note's references are pointed at them. It always arrives as a new note, leaving the original untouched.

Exporting a note

To export a note as .mmp, use File ▸ Export… on the Mac, or Export… in the note's properties. Windows exports the same way. The note you are looking at is saved under its own name.

If any attachment the note uses has not synced to this device yet, memost does not quietly leave it out — the export fails and says so, rather than handing someone a file with holes in it.

Careful: an exported .mmp is not encrypted. Once it leaves the space it no longer has the space's protection, so treat it like any other document when you send it or store it.
On the way: epub import is in the works.

Shortcuts

Use Cmd on macOS and Ctrl on Windows.

ShortcutAction
Cmd+1 – 3Turn the block into Heading 1 – 3
Cmd+BBold
Cmd+IItalic
Cmd+UUnderline
Cmd+Shift+XDelete the block
Cmd+KSearch the whole space
Cmd+FFind within the open note
Cmd+GGo to the next match
Cmd+PPrint
/Open the slash menu (styles & commands)

More shortcuts are listed in the in-app help.