For the thoughts you mean to come back to
Capture a thought, a plan, or something you don’t want to forget. Mnemo helps you find your way back when you’re ready.
Personal · Active
6 entries since Oct 2
Sylhet weekend
Next step
Check the tea garden opening hours
“Remember the transport budget. Bus is twelve hundred each way, plus CNG around town.”
Plans · 2 of 3
Added to Sylhet weekend
UndoMoveSaving was never the hard part. Coming back is: to a trip, a move, a half-written chapter, and remembering where you were with it.
Moving house
Errands · 3 entries, now in one place
“Landlord says the deposit comes back after the inspection on the 28th.”
Before the move · 1 of 3
Hiring a van: what to ask first
Saved from your browser
Why you saved it: the question about stairs and parking.
Next step
Call the internet provider about the new address
Every note joins a thread: one timeline per trip, project or errand. The thread keeps track of where you are, so you don’t have to.
Hold the button and talk, or type. Bangla, English or a mix of both. Add a checklist, a photo, or a link shared from another app. On Android, a home-screen widget keeps capture one tap away.
Mnemo picks out the title, any list, the numbers and the next step, then looks for the thread the note belongs to. With Gemini on, a clear match files itself, with Undo and Move right there; when it isn’t sure, it asks you. Offline, it suggests a thread when a note shares its words.
Home opens on the thread you’re most likely to pick up, with where you left off and the next step. If a thread goes quiet for a couple of days, one gentle reminder brings it back.
Filing is a suggestion you can always overrule: every note can be moved to another thread, or into one of its own.
Search, voice, reminders and AI are here for one reason: to get you back to where you were, faster.
The distance between having a thought and keeping it should be one gesture. Talk, type, tick off a list, snap a photo, or share a link straight in from another app.
A list becomes a checklist. Amounts become a running total for the thread. A shared page becomes a card with the reason you kept it. Numbers are only counted if you actually said them; nothing is estimated or converted.
Search by a word you remember and a rough time, like “cng last week” or “গত মাসে বাজার”. With Gemini on, search also matches by meaning, and you can ask your notes a question and see which ones the answer came from.
Keyword and date search work offline. Meaning search and questions need Gemini.
Say when, the way you would to a friend, and Mnemo sets the reminder. A thread that goes quiet for a couple of days gets one gentle notification with its next step. A weekly review shows what moved and what’s waiting.
Some Android phones hold back background notifications to save battery. Mnemo can send a test reminder and show what to change.
Mnemo works fully on your phone. Add your own free Gemini API key and it does more: cleaner transcripts, tidier notes, more reliable filing, search by meaning, and answers from your notes. Your key is stored in the phone’s secure storage. Switch back to offline at any time.
A Gemini key comes from Google, with Google’s limits and terms. If Gemini can’t transcribe a voice note, an optional Groq key can.
Three threads, part-way through. Open one and the first thing you see is where you were. Search across all of them, tick something off, or add a note and see where it lands.
Demo with sample notes. It runs in your browser and saves nothing.
Threads
Personal · Active5 entries
Where you left off
“Hotel is booked. Bus is 1,200 each way; CNG still to work out.”
Next step
Check the tea garden opening hours
“Remember the transport budget. Bus is 1,200 each way, plus CNG around town, maybe 300 a day.”
Plans · 2 of 4
Find a quiet hotel near the city. Somewhere we can walk to dinner from.
Quiet places to stay near the city
Travel guide
Why you saved it: three guesthouses away from the main road.
“Long weekend coming up. Sylhet? Rumi says the tea gardens are best early in the morning.”
Mnemo has no account and no server of its own. Here is exactly where your notes live, and the few cases where something leaves the phone.
On your phone
In offline mode, that’s where everything stays. Capture, threads, keyword search, reminders and backups all work without a connection.
No Mnemo account. No Mnemo server. Nothing to sync to.
What leaves the phone, and only when
Only if you turn Gemini on
Notes you capture, to Google
Each new note and any photo on it, with the titles of your recent threads so it can be filed. Search words when searching by meaning, and the few best-matching notes when you ask a question. Sent with your own key, under Google’s terms for it.
When you record a voice note
Audio, never kept
With Gemini on, the recording goes to Gemini to be written out, then it’s deleted. Offline, your phone’s speech service writes it out, and on many phones that’s Google’s, which may use the internet.
When you save a link
A request for that page
The phone opens the page to show its title and picture, like a browser would. No AI involved.
When you make a backup
One encrypted file, wherever you put it
Every thread, note and photo, sealed with a passphrase only you know (scrypt and XChaCha20-Poly1305).
The backup file. Without the passphrase it can’t be read, by anyone. That also means a forgotten passphrase can’t be recovered.
Notes on the phone sit in the app’s private storage, protected by your phone’s own lock and security, not by a separate Mnemo password. Notes sent to Gemini are handled by Google, not end-to-end encrypted.
Read the privacy notes, a plain-language draft that hasn’t had legal review yet.
Oct 2 · Voice
Long weekend coming up. Sylhet?
Oct 6 · Shared
Quiet places to stay near the city
Oct 12 · Typed
Bus booked, hotel found. Two to go.
Oct 15 · Voice
Tea garden opens at 8. Leave early.
Oct 19 · Voice
Back home. Worth the early start.
Wrapped up
Sylhet weekend
Still open: send Rumi the photos
When a trip or project is over, Mnemo sums it up in one card, worked out on the phone.
Answers describe the app as it is in the repository today. Where something isn’t built or released, they say so.
A phone app for the things you mean to come back to. Record or type a thought, and Mnemo files it into a thread (a trip, a project, an errand) along with where you left off and the next step, so coming back takes seconds instead of a reread.
A notes app keeps pages. Mnemo keeps threads: everything about the same trip or project lands on one timeline, and the thread always shows where you left off and what comes next.
Home opens on the thread you’re most likely to pick up. When a thread goes quiet for a couple of days, Mnemo can send one gentle reminder with its next step.
Yes. Offline is a full mode, not a fallback. Titles, lists, amounts, dates and next steps are picked out on the phone, in English, Bangla and Banglish, and Mnemo suggests a thread when a note shares its words. Keyword search, reminders and backups all work.
With your own Gemini key, notes are tidied up and filed more reliably, search also matches by meaning, and you can ask your notes a question.
In a database on your phone, and photos in the app’s own folder. There is no Mnemo account and no Mnemo server. Your Gemini key, if you add one, is kept in the phone’s secure storage.
Only if you turn it on. With Gemini on, each new note (and any photo on it) is sent to Google with your key, along with the titles of your recent threads so it can be filed. Searching by meaning sends your search words, and asking a question sends the few notes that match it best.
How Google handles that data is set by Google’s terms for your key. In offline mode, your notes stay on the phone.
Yes, in Bangla, English or a mix. With Gemini on, the note is recorded, Gemini writes it out, and the recording is deleted. Offline, your phone’s speech service writes it out as you talk; on many phones that’s Google’s, which may use the internet. Mnemo never keeps the audio.
Capturing, threads, keyword search, reminders and backups work without a connection. AI features need one: a voice note taken while Gemini can’t be reached is saved straight away and written out later. Link previews need the internet too, because the phone fetches the page.
In Settings, Encrypted backup saves every thread, note and photo into one .mnemo file, locked with a passphrase you choose. Keep it in Drive, email it to yourself, or move it to a new phone and import it there. Importing adds to what’s already on the phone; where both have the same thread, the newer copy is kept.
Backups are made by hand; there’s no automatic cloud sync. If you forget the passphrase, nobody can open the file.
Mnemo is built with Expo and React Native and is being developed for Android first. The home-screen widget, sharing into Mnemo from other apps, and the reminder reliability check are Android-only. iOS isn’t set up for release.
There’s no public download yet. You can build the app from the source on GitHub.
Mnemo doesn’t have a price or a public release yet. AI features run on your own Gemini key; Google offers a free tier, with limits and terms set by Google.
Keep your thoughts, plans, and unfinished ideas connected to the context that makes them useful.
In development for Android. No public download yet. You can build it from source today.