Live captions. Right there.
Read what’s being said.
Put Subt between you and the person speaking. Their words appear in big, clear type as they talk.
£1.99, one-time costWorks offline · no account · no ads
The iPhone app runs speech recognition on your phone: faster, private, and it works without internet. Or try it free in your browser.
- No account
- Nothing recorded
- Nothing saved
- No adverts
Talk. Read. Carry on.
- 1
Open Subt
Download the iPhone app, or try it free in your browser.
- 2
Put it between you
Keep your phone within arm’s length of the person speaking.
- 3
Read along
Their words appear in large captions as they speak.
Your words aren’t kept.
Subt never records or stores audio, and it doesn’t save what was said. Captions disappear when you tap Clear, after two minutes, or when you leave.
On iPhone, speech stays on your device. On the web, your browser’s built-in speech service handles it.
- No recordings
- No saved conversations
- No account needed
- No advertsNothing following you around the internet.
For the moments you need it.
Deaf or hard of hearing
Read the conversation clearly without asking anyone to keep repeating themselves.
When hearing’s harder
A little extra help when voices aren’t as clear as they used to be.
Family and friends
Make everyday chats easier to follow, without making a fuss of it.
Out and about
The GP, the pharmacy, the counter, the café. Anywhere conversation gets tricky.
Use Subt your way.
- iPhone app
On-device speech
Built on Apple’s latest speech recognition, running entirely on your iPhone. Faster, private by design, and it works without signal or Wi-Fi. £1.99, one-off. Get it on the App Store.
- Web
Free in your browser
Use Subt in Chrome, Edge or Safari. No download, no account. Try the web app.
- Home screen
One tap away
Add the web version to your home screen and Subt is there whenever you need it.
Tuned for where you are.
Tap Aa and pick the mode that fits. It switches straight away, even mid-conversation.
- Everyday Default
Most places
Filters background noise and echo, from the office to the shop counter.
- Fast pace
Fast talkers
The quickest captions, for people who talk fast.
- Quiet & TV
Calm rooms and TV
Most accurate when it’s quiet, or with the TV or videos playing.
- Noisy
Engines and hum
Cuts the deep hum of engines, air con, trains and fans, to help voices come through.
- Group
Round the table
Picks up several voices at once.
- £1.99, one-time cost
All five included
Every mode works offline, with no account and no ads.
Get the iPhone app
Good to know.
Does Subt record what people say?
No. Subt never records or stores audio, and it doesn’t save what was said. Captions stay only until you tap Clear, two minutes pass, or you leave.
Do I need an account?
No. Open Subt, tap the mic and start reading.
Which browsers does it work in?
Chrome, Edge and Safari. Firefox doesn’t support the browser speech service Subt needs, so it won’t work there yet.
Why did the captions stop?
Subt stops listening after 2.5 minutes of silence, to save your battery. Tap the mic when you’re ready.
How do I get the most accurate captions?
- Keep your phone within arm’s length of the person speaking.
- Background noise and several people talking at once make captions less accurate.
- Subt listens in your device’s language, so set that to the language being spoken.
Can I put it on my home screen?
- iPhone: open subt.app in Safari, tap Share, then Add to Home Screen.
- Android: open subt.app in Chrome, open the menu and choose Install app.
