Rich text, on request
Bold, italic, underline, headings, bullet and numbered lists, and quotes. Plain paragraphs are the default.
The whole product, in plain language
Everything you need.
Nothing you don’t.
Just One Thought is built to feel like a quiet room, with capable tools tucked neatly out of the way. Here is exactly what is inside — including what it deliberately leaves out.
01 · The writing room
A calm editor that gets out of your way.
A serif page, a single quiet toolbar, and room to breathe. Formatting exists for when you want it, not to decorate the screen.
Plain-text paste, by design
Pasting from a web page brings only the words — never stray formatting, hidden links, or scripts that could execute inside your editor.
Save when you mean it
No silent online autosave quietly overwriting your words from another device. You press save; the version you wrote is the version kept.
A word count, not a target
See how long an entry is as you write. There is no goal to hit, no minimum, and no red text if you stop at a sentence.
A fresh prompt each day
Every day the app offers one question. If it doesn’t fit, ignore it — the page stays blank and waiting.
Two-device safety
Each entry carries a version. If another device saved a newer edit, you are told to review before saving — never silently overwritten.
02 · Notebooks & calendar
Every part of your life, neatly in its place.
Gratitude, work, travel, dreams, hard days — separate notebooks stop everything from becoming one long blur.
Colour-coded notebooks
Create as many as you like, each with its own colour. Entries can also stay unfiled, and removing a notebook never deletes what is inside it — those entries simply return to All entries.
- Unlimited notebooks with a colour per notebook
- See reflection counts on each cover
- Open a notebook straight into a filtered timeline
A calendar that remembers
Every day you wrote shows a dot. Tap any date to see what you saved. It’s the fastest way to notice a good week you had already forgotten.
- Interactive month view with entry dots
- Today always highlighted
- Select a day to read it in place
Find the entry you half-remember
Filter by notebook, mood and date range across a paginated timeline, then search the page you have loaded. Search is deliberately page-local so your private text is never shipped to a plaintext global index.
- Filter by notebook, mood (1–5) and date range
- 30 entries per page, grouped by month
- Page-local search — no plaintext database search
03 · Mood & insights
Understand your patterns, gently.
One tap records how the day felt. Over weeks, the shape becomes visible — on a 90-day chart, a distribution, and a consistency heatmap.
Five honest points
From “Low” to “Wonderful”. No emoji moods beyond what you choose, and no one else sees them.
Your writing rhythm
A streak that counts today or yesterday, so missing one evening doesn’t erase a good month.
Accessible by default
Every chart has a data table underneath it. Nothing about your own history is locked behind a colour.
Mood · last 90 days
Consistency
04 · Photos & voice
When words aren’t enough.
Attach an image, upload an audio file, or record a voice note straight from the editor — up to ten files per entry, ten megabytes each.
Images
JPG, PNG and WebP up to 10 MB. Shown inline in the entry and encrypted before they touch disk.
Voice notes
Record in the browser where supported, capped at two minutes, or upload an existing audio file instead.
Filenames stay private
Original filenames are encrypted too, and files are stored under random names outside the web root.
Original image metadata is retained as uploaded. Strip location metadata from photos if you would rather not keep it.
05 · Anywhere you are
Offline drafts, and a journal you can take with you.
Install it to your home screen. Write into an encrypted local vault when there is no signal, then save to your journal when you’re ready.
Encrypted offline vault
Drafts are encrypted in your browser with AES-256-GCM and a passphrase of your choosing, derived with PBKDF2 at 310,000 iterations. The key lives in memory for the tab only, and drafts never sync automatically.
Installable, responsive
Add it to your phone’s home screen and it opens full-screen like an app. The layout is designed for a thumb on a small screen first, then scales up.
PDF export, always
Export your whole journal through your browser’s print dialog at any time — including after a plan ends. Nothing is held hostage.
Honest limits
Attachments are not embedded in the PDF, drafts live only on one device, and a forgotten offline passphrase cannot be reset. We would rather say so than surprise you.
06 · Privacy
Locked down, quietly.
Encryption at rest, a PIN for shared devices, session expiry, and no third-party scripts anywhere on the site.
Encrypted content
Entry titles, body text, attachment names and uploaded bytes are encrypted with XChaCha20-Poly1305 and a server-held key, bound to your user and attachment identifier.
PIN lock
An optional six-digit PIN is required after login and whenever you lock the journal. Useful on a shared laptop; not a replacement for your password.
Sessions that end
Thirty minutes idle, twelve hours absolute by default. Changing your password or PIN invalidates other sessions immediately.
No trackers
No analytics, no advertising pixels, no external fonts, no CDN. The page loads only from this domain.
CSRF and Origin checks
Every change requires a session-bound token; cross-origin requests are refused. Uploads are size- and type-checked.
The limit, stated
This is server-side encryption, not end-to-end. An operator holding the application key can technically decrypt stored content.
And what isn’t here
The things we chose not to build.
A journal is only calm if it refuses a few features on purpose.
No public profiles or sharing
There is no way to publish an entry, and no follower count to chase. The only reader is you.
No social feed
Nothing to scroll, nothing recommended, nothing to compare your life against.
No streak shaming
Missing a day doesn’t paint anything red. Yesterday still counts, and the count simply resumes.
No AI rewriting your memories
Prompts are written by people. The app never generates, edits or “improves” what you wrote.
No live card charging in this build
Checkout is a clearly labelled demonstration until a verified payment integration is added.
No third-party scripts
The content security policy allows only this origin. Nothing can be injected from elsewhere.
Ready when you are
Your first page
is waiting.
Fourteen days of everything, no card. See whether a quiet five minutes a day changes the shape of your week.
Begin your free trial