QUANTUM-RESISTANT ENCRYPTION · 100% ON-DEVICE

What's said in the room stays on your phone.

VoiceJots records, transcribes and summarizes your conversations — who said what, searchable by phrase or by meaning. Every step runs on your device. Everything is encrypted. Nothing is uploaded — not even to us.

iPhone 14 and newer · English · Українська · Русский · Free to start
SEALED
ENCRYPTED · LOCAL
Client intake — lease dispute
DATE
25.09
LENGTH
42:18
SPEAKERS
2
SUMMARY
Client disputes the deposit held by . Deadline to respond:
— send notice by registered mail.
03:12
Client They kept the whole deposit and never sent an itemized list.
03:26
You When did you move out, and did you do a walk-through?
03:41
Client End of March. I have photos from that day.
NO CLOUD✕ NO ACCOUNT✕ NO ANALYTICS✕ NO ADS✕ QUANTUM-RESISTANT✕ WORKS IN AIRPLANE MODE
HOW IT WORKS

From a conversation to a searchable record — without a server.

The speech models download once, then everything happens on the phone. Turn on airplane mode and it all still works.

01
Record
Audio is encrypted as it is captured. There is never a plain audio file on the phone.
02
Transcribe
Whisper runs on the device — live while you talk, then a careful pass when you stop.
03
Who said what
Voices are told apart automatically. Names people use are picked up and suggested.
04
Summarize
An on-device language model writes the summary in the language you spoke — editable.
05
Find anything
Search by exact phrase or by meaning, and jump straight to the moment it was said.
WHAT SOMEONE WITH YOUR PHONE SEES

A wall of identical, meaningless files.

Audio, photos and documents are cut into equal 4 MB pieces with random names, each sealed separately. From the outside there is no way to tell how many notes you have, how long they are, or which piece belongs to what. Transcripts, summaries and the search index live in an encrypted database.

3f9a…c21e4.0 MB
7b04…9d5f4.0 MB
a1e8…4b734.0 MB
c5d2…08af4.0 MB
2e6b…f19c4.0 MB
9a37…6d204.0 MB
4c8f…b3e14.0 MB
d07a…52c84.0 MB
6b1d…e94a4.0 MB
f28c…7a054.0 MB
05e3…1c6f4.0 MB
8d4b…a7d24.0 MB
1f70…3e8b4.0 MB
b9c6…05f44.0 MB
e34d…8b194.0 MB
52a8…d6c04.0 MB
7c0e…2f954.0 MB
a6f1…b84d4.0 MB
0d93…5a7e4.0 MB
c8b5…e03a4.0 MB
ONE KEY, SEVERAL LOCKS
A single random 256-bit master key encrypts everything. Face ID or your fingerprint opens it on this phone; your 24-word recovery phrase opens it anywhere.
READY FOR QUANTUM
Only 256-bit symmetric cryptography protects your data at rest — no public-key wrapping a future quantum computer could break. A copy taken today stays sealed.
NOTHING TO SUBPOENA
We have no servers holding your notes, no account, no copy. The only traffic is the one-time model download and the app store's own billing.
QUANTUM-RESISTANT BY DESIGN

Encrypted today. Still sealed when quantum computers arrive.

Most of the internet protects keys with RSA or elliptic curves. A large quantum computer running Shor's algorithm breaks both — and data copied today can simply wait for that day. This is called harvest now, decrypt later.

Quantum computers barely dent symmetric ciphers: Grover's algorithm halves their strength, so a 256-bit key still leaves 128-bit security. That's why every step from your words or your face to your data in VoiceJots uses 256-bit symmetric cryptography only. No RSA, no elliptic curves, nothing for Shor's algorithm to attack.

AES-256 XChaCha20-Poly1305 HKDF-SHA-256 Argon2id RSA Elliptic curves
THE PATH TO YOUR DATA
Face ID / fingerprint secure-hardware key · AES-256
24 recovery words Argon2id → 256-bit key
Master key 256-bit · random · never leaves the phone
HKDF-SHA-256
Transcripts & search database · AES-256
Audio, photos, files XChaCha20-Poly1305
Changing a factor rewrites one small key slot — never your data.
SIDE BY SIDE

Your phone already encrypts. Here's what it doesn't cover.

Built-in iPhone and Android encryption is excellent. VoiceJots runs on top of it — a second, independent layer that only you hold the key to.

Your iPhone / Android built-in encryption
Cloud AI note-takers transcribe on their servers
VoiceJots on-device, own keys
Encrypted at rest
✓ AES-256 with hardware-bound keys.
~ On their servers, with keys they hold.
✓ AES-256 + XChaCha20-Poly1305 with your own key, on top of the phone’s.
Sealed while the phone is unlocked
✕ After the first unlock, app data stays readable to whoever has the phone in hand.
✕ Readable by the service at any time.
✓ A second lock: notes open only with Face ID or fingerprint inside the app.
Recordings leave the device
~ Depends on your apps and sync settings.
✕ Every recording is uploaded to be transcribed.
✓ Never. Transcription and summaries run on the phone.
Who can decrypt
~ You — and with standard cloud backups, the provider too.
✕ The provider, and anyone it has to answer to.
✓ Only you. We have no copy and no key.
Copies in cloud backups
~ App data is backed up by default.
✕ Your data lives in their cloud.
✓ Excluded from backups; the keys are bound to this device.
Harvest now, decrypt later
~ Storage is symmetric, but anything that syncs travels over public-key exchange.
✕ Audio crosses the network protected by key exchange a quantum computer could break.
✓ Nothing crosses the network. 256-bit symmetric only, end to end.
✓ protected ~ partly, depends on settings ✕ not protected "Cloud AI note-takers" describes a typical architecture, not a specific product.
EVERYTHING A NOTEBOOK SHOULD DO

Powerful enough for work. Private enough for anything.

Live transcription
Text appears while you are still recording, so the note is ready moments after you stop.
Speakers, named
Rename "Speaker 1" to "Client" once; the transcript and summary follow.
Summaries that fit
General, legal intake, meeting notes and more — rewrite a summary in another format any time.
Search by meaning
"What did we agree about the deadline?" finds the answer even if nobody said "deadline".
Folders & text notes
Work, Family, Personal or your own. Typed notes live next to recordings.
Photos, off the gallery
The in-app camera keeps pictures in memory and in the vault — never in your camera roll.
Locked by your face
Face ID or fingerprint unlock, and the vault locks itself when you leave the app.
Tuned to your phone
A quick device check picks the right models, so older phones stay fast.
FOR LAWYERS
Client intake and privileged conversations that never touch a third-party server.
FOR CONSULTANTS
Meetings under NDA, summarized with decisions and next steps — in the language they were held in.
FOR EVERYONE ELSE
Doctor's visits, family matters, ideas at 2 a.m. — whatever you'd rather not hand to a cloud.
PRICING

Privacy isn't a paid feature.

Encryption, transcription, speakers, summaries and search work the same on Free and Pro. Pro only removes the recording limits.

FREE
$0
✓Up to 30 minutes per recording
✓3 hours of recording each month
✓Every privacy and AI feature
Start free
PRO
7-DAY FREE TRIAL
$79.99 / year
✓Unlimited recording length
✓No monthly limit
✓Or $12.99 / month — yearly saves 48%
Try Pro free

Prices in USD; your store may show local prices. Subscriptions renew automatically through the App Store or Google Play unless cancelled at least 24 hours before the period ends.

QUESTIONS

Asked by careful people.

Does anything I record go to the cloud?
No. Recording, transcription, speaker detection, summaries and search all run on your phone. The only downloads are the speech models, once, from our server.
What happens if I lose my phone?
Whoever finds it sees only encrypted files. At setup you write down 24 recovery words — they are the only key that can open your data somewhere else.
Which phones are supported?
iPhone 14 or newer with iOS 17.2+, and [ANDROID REQUIREMENTS]. The app checks your device on first launch and picks models that run well on it.
Which languages does it understand?
English, Ukrainian and Russian today. Summaries are written in the language of the recording.
Can you read my notes, or hand them over?
We have nothing to read or hand over. There is no account and no server-side copy — your notes exist only on your device.

Say it freely. It's sealed the moment you say it.

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