01
No internet permission
Not a promise—an absent permission. The app cannot open a network connection, and you can check that yourself in thirty seconds.
A KEYBOARD HAS NO BUSINESS BEING ONLINE
If you're not paying
for the product,
you're the product. We'd rather take a few bucks once than your privacy forever.
You don't have to sacrifice functionality for privacy. SottoKey fixes grammar and tone directly on your phone—even in airplane mode. No ads. No account. No analytics. No internet permission.
SottoKey for Android
02
You keep the final word
Every rewrite waits in a visible diff. Nothing changes until you say so.
03
No account behind it
No sign-in. No analytics SDK. No cloud model. No remote logs. Nothing to opt out of.
WRITE. REVISE. DECIDE.
Make the sentence fit the moment.
Fix the typo. Sharpen the tone. Send the email you meant to send—without your draft ever leaving the phone.
ROUGH IN. READY OUT.
Fix the line. Keep the decision.
Write as you normally would. Choose Fix, Professional, or Casual. SottoKey marks the difference and leaves your original in place until you accept.
BEFORE / AFTER
tehThe meeting got moved to 3pm.
Rewritten on your phoneNo cloud request. No account.Results vary. Your original stays in place until you accept the edit.
Fix · On device
The meeting got moved to 3pm.
NO NETWORK PATHBlocked by the app manifestINTERNET permission absent
THE KEYBOARD IS ALREADY IN THE CONVERSATION
It should have nowhere else to go.
Every keyboard you've used collects something—their own Data safety sections say so. SottoKey's answer is not a promise or a settings page. It is a missing permission: the production manifest requests no INTERNET, so your text still goes where you put it—the app you are typing in—not to a SottoKey server.
PRIVACY WITHOUT A LESSER KEYBOARD
Everything you expect. One thing you don't.
Privacy is no excuse for a worse keyboard. Correction, editing, clips, and emoji carry the everyday work; rewriting carries the rest.
01 / WRITE
First, it has to type well.
- English and Spanish layouts and correction
- Local autocorrect and learned words
- Glide typing in device validation
02 / REVISE
Fix the line, or change its tone.
- Selection or current paragraph
- Fix, Professional, and Casual
- Checks for changed numbers, links, and negation
03 / REVIEW
See the edit before it becomes yours.
- Clear insertion and deletion marks
- No replacement before approval
- Keep original or accept edit
YOUR EVERYDAY KEYBOARD
Built for more than the careful sentences.
Autocorrect, editing, clips, undo, emoji, and bilingual typing stay close at hand.
01 / 06
Type where you are
Stay in the message, note, form, or document you already opened.
LOCAL DOESN'T HAVE TO FEEL SLOW
The median rewrite took 490 ms.
Measured with the installed model on one Snapdragon 855 device. Numbers vary by phone. What never varies: no rewrite waits on a network, because there isn't one.
APP UIv0.4.0Current device build
MEASURED MODELSottoKey v3 FinalQ8_0 · measured 14 July 2026
GOOGLE PLAYNot yet available on Google PlayPrivate device beta
DEVICERedmi K20 Pro · Snapdragon 85514 July 2026
P50 TOTAL490 msinstalled-model rewrite corpus
TIME TO FIRST TOKEN207 msp50 measured
GENERATION28.3 tok/smean throughput
MODEL PAYLOAD379 MBLFM2.5 · 350M · v3 final · Q8_0
KEEP THE CLOUD OUT OF THE CONVERSATION
Your keyboard sees enough.
It doesn't need a network.
Write, revise, and decide on your phone.