Is there an app that talks with you in English?

Yes. AI conversation apps such as Cláudia answer by voice and correct what you said. General assistants such as ChatGPT and Gemini also hold voice conversations.

Is there a free AI app to practice speaking English?

Yes. ChatGPT has voice mode on the free tier, with limits; Google Translate has the Practice feature, in beta; and MEC Idiomas is free for Brazilians with a gov.br account. On Cláudia, the free account is text only.

Which app explains mistakes in Portuguese?

On Cláudia, the “Com uma mão do português” option (with a little help from Portuguese) makes her explain in Portuguese while you practice English. With general assistants, you can ask for that in your prompt.

Does Cláudia work for people who don’t speak Portuguese?

No. The app, the sign-up and the support are in Portuguese, and plans are paid in Brazilian reais. Cláudia does not teach Portuguese either.

AI English speaking app for Brazilians: how to choose

Who is Cláudia for? Adults (18+) who speak Portuguese, mostly in Brazil, and want to practice speaking English, Spanish, French, Italian or German.

Not for: people who don't read Portuguese (the app interface is in Portuguese), people who want to learn Portuguese, and people who need a certificate.

The facts about other apps were checked on their official pages. Links and dates are under “Sources”, at the end.

What to look for

Real voice conversation. You speak out loud and the app answers out loud, instead of only tapping words on the screen.
Instant correction. The app shows the mistake and the right form right after you speak, and asks you to say it again.
Explanations in Portuguese, when you want them. For beginners, understanding why something was wrong makes a difference.
Pronunciation. A score for each word shows exactly what to adjust.
Price in reais and simple cancelling. Check whether it renews automatically and how to cancel before subscribing.
Where it runs. App store, browser or both.

Sounds Portuguese speakers often struggle with

Many Brazilians understand much more English than they can say. When it is time to speak, the stumbling blocks tend to be the same:

The “th”. The sound in think, three and this does not exist in Portuguese, so it comes out as “tink” or “dis”.
Short and long vowels. ship and sheep, live and leave, full and fool are different words.
Extra vowels. Portuguese rarely ends a word in a consonant or starts one with “s” plus a consonant, so a vowel sneaks in: big becomes “bigui” and school becomes “es-school”.
The past-tense “-ed”. worked is one syllable, “workt”. The extra syllable only shows up after “t” or “d”, as in wanted.
Word-for-word translation. “Eu tenho 25 anos” turns into I have 25 years, when in English age goes with the verb to be: I’m 25 years old.

An app that corrects you out loud and makes you repeat the right sentence works on exactly these points.

Free options that exist

If your budget is zero, you can start without paying:

ChatGPT voice mode. OpenAI offers voice conversation in ChatGPT, including on the free tier, with usage limits. You talk in English and can ask to be corrected.
Gemini Live. According to Google’s help page, with Gemini Live you can “Talk to Gemini without typing, and Gemini will respond back verbally.”
Google Translate, Practice. Inside the Google Translate app, available to Portuguese speakers learning English. Google calls it a “limited beta experience”.
MEC Idiomas. A free platform from Brazil’s Ministry of Education, with English and Spanish, accessed with a gov.br account, and an AI agent to answer questions and practice conversation by text or voice.

General assistants (ChatGPT, Gemini, Meta AI, Copilot and others) talk about anything, but the path, the level and the correction depend on what you ask for. Cláudia’s comparison with them is in Cláudia, ChatGPT e outras IAs (in Portuguese).

Paid AI conversation apps

Besides Cláudia, there are other paid AI voice conversation apps, such as Praktika, Speak, ELSA Speak and Duolingo’s Max plan, and there is Cambly, with human teachers. Facts, sources and who each one suits are in apps para conversar em inglês em 2026 and in the comparisons (both in Portuguese), and in Cláudia vs Duolingo.

Where Cláudia fits

Cláudia is a paid Brazilian app built for spoken conversation practice. What it has:

Voice and text conversation with an AI tutor, with instant correction.
Two ways to take turns on a call: “Um toque abre, outro fecha” (one tap opens the microphone, another closes it) or automatic.
A daily lesson with a report, pronunciation with a score for each word, and a scripted conversation.
Explanations in Portuguese (“Com uma mão do português”, with a little help from Portuguese) or all in English.
Three moods: calm, direct or strict (with swearing, 18+ only).
English, Spanish, French, Italian and German; the full set above is in English (see Languages).
Plans in Brazilian reais: annual R$ 99.90, monthly R$ 39.90 or weekly R$ 9.90. See Pricing.

When Cláudia is not the right choice

If you don’t read Portuguese. The app, the sign-up and the support are in Portuguese.
If you need a certificate. Cláudia is not a course with a certificate and does not guarantee fluency.
If you only install apps from a store. Cláudia runs in the phone and computer browser and can go on the home screen, but it is not on the App Store or Google Play.
If you want free voice conversation. Cláudia’s free account is text only; voice comes with a paid plan. The options above are free.

Sources

OpenAI Help Center, Voice Mode FAQ: help.openai.com (checked on October 19, 2026).
Google, Gemini Apps Help, “Talk naturally with Gemini Live”: support.google.com (checked on October 20, 2026).
Google Translate Help, Practice: support.google.com (checked on October 20, 2026).
Agência Gov, “Conheça recursos do MEC Idiomas” (in Portuguese), September 21, 2026: agenciagov.ebc.com.br (checked on October 19, 2026).

Practicing spoken English with AI as a Portuguese speaker