The AI that works when the bars don't.
Translate a menu in a mountain village. Read a letter on a plane. Ask anything in a tunnel. SignalFree runs a full AI model on your iPhone, so it works with no internet at all.
14 days free, no account. Then $14.99 once. Invite a friend and earn a lifetime unlock code. iPhone 15 Pro and newer.
Six things you'll actually need out there.
One tap each. No chat window to babysit. Ask a follow-up if you want, then move on.
Translate
Point the camera at a sign or menu, speak a sentence, or type. Seventeen languages, both directions, with the price and every number kept exactly.
Read this
A letter, a receipt, a ticket, a form. Get the key facts and the parts that matter, read at full resolution so small print counts.
What is this
An appliance panel, a warning label, a plant, an error on a screen. It tells you what you're looking at and what to do next.
Ask
Quick answers with the level of detail the question deserves. Conversions, how-tos, what a word means. It says so when it doesn't know, and it is no substitute for a doctor or other professional.
Write
Tell it what you need, a complaint to a hotel, a thank-you, a note for a stranger, and dictate the facts. Then make it shorter, friendlier, or in another language.
Talk
Hold the button, ask out loud, hear the answer. Hands and eyes free, with the phone's own offline speech engine.
Offline is not a mode. It's the whole design.
A 4-billion-parameter model lives inside the app, about 3 GB, downloaded once from the App Store. After that, the phone is the server.
- Nothing leaves the phone. Not the photo, not your voice, not the question. There is no server to send it to.
- No account to use it. Sign in only if you want a friend pass.
- No analytics, no tracking. The privacy policy is short because there is little to say.
- Built for iPhone 15 Pro and newer. It needs that much memory to run a real model well.
The friend pass.
One friend, and the app is yours for good. They get the same 14-day trial everyone gets.
Sign in once
Apple, Google, Microsoft, or an emailed code. You get a personal six-character code.
Send it to a friend
They install the app and enter your code in Settings.
Earn the unlock
When they join, we send you an App Store promo code for the lifetime unlock. Redeem it once, and the app is yours. No count, no tiers.
Honest pricing. Pick one.
Try everything
Every feature from the first launch. No account, no card, nothing to cancel.
Unlock once
One purchase through the App Store. No subscription, ever. Works on every iPhone signed into your Apple ID.
Friend pass
Share your code. When one friend joins, you earn an App Store promo code for the lifetime unlock.
Questions people ask.
Does it really work with no internet?
Yes. Put the phone in Airplane Mode and use every feature. The model runs on the iPhone's own chip. The only things that need a connection are optional: signing in and using a friend pass.
How good is a model that fits on a phone?
Very good at the jobs it's built for: translation, reading documents, identifying things, quick answers and short writing. It is not a research assistant and it will tell you when it doesn't know. Answers take a few seconds.
Why iPhone 15 Pro and newer?
The model needs about 4 GB of memory while it works. Older iPhones don't have enough to run it reliably, and we would rather not ship something that stutters.
Which languages?
English, Chinese (Simplified and Traditional), Japanese, Korean, Spanish, French, German, Italian, Portuguese, Russian, Arabic, Hindi, Vietnamese, Thai, Indonesian and Cantonese. Voice input uses your phone's offline dictation packs, so it covers the languages you have installed.
What do you collect if I sign in?
Your name and email, and a phone number only if you turn on phone contact. Both marketing choices are off unless you switch them on, and you can delete the account from Settings. Details are in the privacy policy.
Is the download big?
About 3 GB, once, from the App Store. Updates only download what changed. That size is the reason it works in the places where downloading anything is impossible.
Support.
Questions, a problem with the app, a friend pass that didn't arrive, or a request to delete your data: email hello@signalfree.app. A person reads every message, and we reply within two business days.