Private journal

A private journal app, locked with a PIN

Write what happened today, what you're grateful for and what's on your mind. Memlow is a free private journal app: your entries stay on your device, a PIN keeps them out of sight, and no AI reads a word.

  • Free
  • Private
  • No AI
  • Works offline
A locked journal note in Memlow asking for the PIN
A locked note on Android asking for the PIN
  • On your deviceEntries are saved on your phone or in your browser, never on Memlow's servers.
  • Locked with a PINLock each entry, or the whole app. On Android, lock a folder and use your fingerprint.
  • Prompts to startDaily journal, gratitude, weekly reflection and dream journal templates, dated for you.
  • No AINo summaries, no mood scores, no suggestions. Nothing reads your journal.
How it works

Three steps, then it's yours

  1. Start from a promptDaily journal, gratitude, weekly reflection or dream journal.
  2. Lock itA PIN for each entry, or for the whole app. Fingerprint on Android.
  3. Back it upEncrypted with your own password, in your own Google Drive.
In Memlow

A page that feels like a diary, here in the Morning pages theme.

Try it now
A journal entry in Memlow's Morning pages theme

No AI reads your journal

A journal is the last thing you want on someone else's server. In Memlow, entries are saved on your phone, or in your browser's storage on a computer, and Memlow's servers never receive them. There's no AI in Memlow at all, so nothing summarises your week, scores your mood or learns from what you wrote. The notes app sends no analytics about what you write either.

A diary with a lock

Memlow works as a journal with a lock, on your phone or your computer. Choose a PIN of 4 to 8 digits (4 to 6 on Android) and lock any entry from its menu. A locked entry shows only its title in your list and in search, and opening it asks for the PIN. To guard everything, turn on the app lock, and Memlow asks for the PIN each time it opens. On Android you can lock a whole folder, so a Journal folder keeps every entry in it locked, and unlock with your fingerprint.

A lock keeps out someone who borrows your phone. It doesn't encrypt the entry: the entry is stored like your other notes and protected by your phone's own security, so keep a screen lock on the phone too. Forgot the PIN? Show it's you with your fingerprint, backup password or Memlow account, and choose a new one without losing an entry. Lock notes and folders with a PIN has the steps.

Daily prompts and templates

A blank page is hard on a tired evening. Four templates give you somewhere to start:

  • Daily journal: your mood, how you feel, what happened, three things you're grateful for and one thing for tomorrow, titled with today's date.
  • Gratitude: three good things, someone you're thankful for and a small win.
  • Weekly reflection: the best moment, what you learned, what drained you and next week's focus.
  • Dream journal: the dream, how it felt and the people, places and signs in it.

Write one entry a day, or keep one long note per month. Save your own layout as a template and it's ready every evening.

Make it feel like a diary

Give the journal a look you want to come back to: the Morning pages or Sakura theme, lined paper, a handwriting font such as Caveat, and a sticker or two. Add a mood or a rating to an entry, a date that says "3 days ago", a countdown to an anniversary, a photo from the day, or a voice note when you'd rather talk than type. Every look is free; note themes shows them all.

Back it up so only you can read it

A journal kept on one phone can be lost with that phone. Turn on Google Drive backup and each backup is encrypted on your device with a password only you know, before it goes to a hidden folder in your own Drive. Google stores the file but can't read it, and neither can we. Or save a password-protected backup file and keep it on a computer. On the web, Version history keeps earlier versions of each entry, and you can export all your entries as Markdown files, or any one as a PDF, whenever you like.

Privacy, in plain words

Your notes stay yours.

No adjectives, just how it works. Memlow's servers never receive your personal notes, so there is nothing of yours for us to read, sell or lose. What you share is stored there encrypted end to end, so only the people you share with can read it.

Read the privacy policy

Where notes live
On your device: the phone's storage, or your browser's own storage on the web.
Accounts
A Memlow account never holds your notes. It keeps only your name, email and how you sign in.
Backups
Optional, in your own Google Drive or a file, encrypted on your device with your password (AES-256-GCM) before they leave it.
Who can read them
Only you. Not Google, not us. That also means we can't recover a lost backup password.
Analytics and AI
The apps have no analytics. This website uses Google Analytics only if you accept it. No AI reads your notes, and the Android app's few ads never see them.
Questions

Questions about a private journal

Something else? Look in the Help Center or write to [email protected].

Can I lock my journal?

Yes. Lock each entry with a PIN, or turn on the app lock. On Android you can lock a whole folder and use your fingerprint.

Does any AI read my journal?

No. Memlow has no AI. Nothing summarises, scores or analyses what you write.

Is there a daily template?

Yes. The Daily journal template opens with today's date as the title, and prompts for your mood, your day, three good things and tomorrow.

Can I back it up privately?

Yes. Drive backups and backup files are encrypted on your device with a password only you know, so neither Google nor Memlow can read them.

Is it free?

Yes, on Android and on the web. The web app has no ads; the Android app shows a few, never while you write and never on the lock screen.

Your notes stay yours.

Memlow is free and private, with no AI. Start writing in your browser, or get the Android app.

Memlow's notes: colourful cards with checklists, reminders and folders