JumboChat logo JumboChat
iOS · on the App Store

Talk to someone who doesn't share your language.

JumboChat is built for the moment two people are standing in front of each other and neither one can start the sentence. Hold your button, say it, hand the phone over. Nobody signs in, nobody makes an account.

Free · iPhone, iOS 16 or later · no account needed

English · spoken
Where is the station?
Japanese · translated
駅はどこですか?
What it does

One screen, two people, no account

The app opens straight onto the conversation — no dashboard to get through, nothing to sign up for. The first time you use a language, it downloads its offline pack once; after that it's ready whenever you open the app.

01

Hold to speak

Two microphone buttons, one per language. Hold yours, speak, let go. Hand the phone across and the other person holds theirs.

02

Type when speaking won't work

A loud street, a quiet library, a voice the microphone can't catch. Type it instead and the translation works the same way.

03

Translation runs on your phone

Download a language pair once and the translation itself happens on the device — no round trip to a server for every sentence.

04

Every turn stays on screen

Completed turns build into a conversation you can scroll back through, replay out loud, or copy into a message.

The app

What it looks like in the hand

Captured on iPhone. Two microphone buttons, the sentence you said, and the sentence they hear — nothing else competing for the screen.

JumboChat open on an empty English and Japanese conversation
The conversation
A Japanese sentence translated into English inside JumboChat
Say it, they read it
An English sentence translated into Japanese inside JumboChat
Any pair, both ways
Choosing from the six supported languages
Pick your two
Offline language packs in JumboChat settings, English and Japanese downloaded
Offline packs
Languages

Six, both directions

Pick any two and swap them at any time. Each pair downloads once, then it's yours.

EN
English
English
ES
Spanish
Español
FR
French
Français
JA
Japanese
日本語
ZH
Mandarin
中文
KO
Korean
한국어

Speech recognition and spoken playback use your phone's own voice services, so availability follows your device and its language settings.

Privacy

Nothing to sign up for

A translator hears private things — a pharmacy counter, a border desk, a doctor. It should ask for as little as possible.

No accountNo name, no email, no phone number. Open the app and use it.
No cloud historyThe conversation is held in memory while the app is open. It isn't written to storage, and closing the app clears it.
On-device translationOnce a language pair is downloaded, translating a sentence doesn't need a connection.
Permissions on demandThe microphone is only requested the first time you actually hold a button to speak.

Turning speech into text uses your phone's own recognition, so Apple or Google may process that audio depending on your device and its settings — and on Android the app has an on-device speech mode for when you'd rather they didn't. Translation itself is Google ML Kit running on the phone. All of it is spelled out in the privacy policy.