Updated 10 November 2026
Automatic message translation, from send to read
Espero is an AI-powered multilingual messaging app that automatically translates text, voice messages, images and video into each recipient's own language.
An app that translates messages automatically lets the conversation keep moving.
What happens when you send
- Write your message in your own language and send it within Espero.
- Espero prepares the version for each recipient’s chosen reading language; nobody needs to copy text elsewhere or press a translate button.
- Read replies in your language and open the original whenever you want to check the wording.
- Set a reading language for a particular conversation when you want that chat to use a different one.
One Finnish message, two readers
This is an illustration of one message with two reading languages. A Finnish speaker writes “Kokous alkaa huomenna kello kymmenen”. The Spanish-speaking member reads “La reunión empieza mañana a las diez”, while the Arabic-speaking member reads “يبدأ الاجتماع غدًا في الساعة العاشرة”. The Finnish text means “The meeting starts tomorrow at ten”.
Both recipients are following the same discussion, rather than receiving separately written announcements. See how a translated group works.
When the message is a recording or a picture
For a voice note, speech becomes text that can be translated for the reader. A photograph can supply text to translate, and shared video can have subtitles in the reader’s language.
Written messages and their translations, including groups, search, the Espero assistant and following events are free. Voice and video calls are free when both people have Espero on their phones. Calls are unavailable on the web. Translation of text in pictures: 3 / image · Espero credits.
Keep the source close to the translation
You can inspect the original and use Translate again from the message menu. That makes it possible to check a name or an unusual phrase within the conversation.
Espero tests translations before adding a language to its menu and uses blind evaluations when a translation model or its instructions change.
What cloud processing involves
After the in-app cloud-processing acknowledgement, message text is processed to deliver and translate the conversation. Using a voice, image or video feature also involves processing the corresponding content.
Transport and stored records are encrypted, with the primary database located in the EU (Ireland). For this cloud workflow, Espero uses the paid APIs of AI services whose terms state that the providers do not use the content to train their own models; they may keep requests for a limited period for abuse monitoring. Details of processing locations and retention are on the security and privacy page.
Questions and answers
Do I have to copy messages into another app?
No copying or pasting is needed for the translation of an Espero conversation.
Does every recipient get the same translation?
Recipients with different selected languages get versions for their own reading language.
Can one conversation use a different reading language?
Yes, a member can set a language for that conversation separately.
Is the source text replaced?
Espero keeps the source text available so you can inspect what was actually written.
What happens to text inside a photo?
Written messages and their translations, including groups, search, the Espero assistant and following events are free. Voice and video calls are free when both people have Espero on their phones. Calls are unavailable on the web. Translation of text in pictures: 3 / image · Espero credits.
How is our data protected during translation?
Messages have encryption in transit and at rest; the primary database sits in the EU (Ireland). For the translation services, Espero uses the paid APIs of AI services whose terms state that the providers do not use the content to train their own models; they may keep requests for a limited period for abuse monitoring. Consult security and privacy for the processing and retention details.
About Espero
Espero is an AI-powered multilingual messaging app that automatically translates text, voice messages, images and video into each recipient's own language.