Training Example: Tandem – Review the Data, Give Your Score & Compare to the Real AI Evaluation

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[H1] Speak with Tandem
Master any language by actually chatting with real peopleStart learning
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[H2] I want to practice…
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English
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Spanish
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French
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German
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Italian
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Portuguese
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Russian
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Japanese
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Chinese
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Korean
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Other
[H2] What is Tandem?
The language learning app where millions of people teach each other.
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Stefania is a native German speaker. She wants to work on her English.
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Anne is a native English speaker. She wants to improve her German skills.
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Anne and Stefania connect on the Tandem app…
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Chat
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Video
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Correction
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Translate…and use Tandem’s intuitive messaging features and language tools to practice their target languages together! Stefania helps Anne with German and Anne helps Stefania with English.You may know us from…
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[H2] How does Tandem work?
[H3] 1. Join the community
Download the app and sign up for free. We review every application to make sure that the Tandem community remains safe and fun for everyone.
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[H3] 2. Find a partner
Once you’re in, Tandem makes it easy to find the right language exchange partner. Search by language, location, interests, and more.
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[H3] 3. Start talking!
Pick any way to talk: text, voice note, audio or video call. In-app correction and translation tools keep the conversation flowing.
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Millions of language partners. Any language combination.keyboard_arrow_leftkeyboard_arrow_rightStart learning
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Find your peopleWith Tandem, you’ll find millions of people sharing the joys and struggles of learning a new language. Join the community and contribute your perspective to the world!Start learningPeople love Tandem!Over 100,000 5-star reviews!starstarstarstarstar"I love this app. Speaking to people who also want to learn a language is the best thing ever! I’ve made great friends already and it hasn’t even been 24 hours. I love this app!"Francescastarstarstarstarstar“There is always a friendly language partner ready to strike up a conversation, and the staff are professional and helpful! I would recommend Tandem to anyone trying to practice a new language!!” Lucastarstarstarstarstar “If you’re truly serious about learning a different language this is the app for you!!! You will not regret it! This app makes it safe and fun for everyone to communicate and learn! I love this app!”Sakikostarstarstarstarstar“Lots of nice people and it’s fun and easy to use. It will translate what you say and you can use the speak function to learn how to say it. It does almost everything you need and more! 6 stars!”Alfonsostarstarstarstarstar “This app is seriously the best! It’s so crazy to meet people from the other side of the world! It’s great for improving languages because you are talking to real people. 11/10 would recommend.”Niamhstarstarstarstarstar“I feel privileged to have met sensational people through the app. You not only learn and develop another language, you also learn about cultures, popular sayings, and get tips.”Mikhail
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[H2] Any Time. Any Place.
Take the Tandem community with you on your travels and never miss an opportunity to practice.Start learning
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[H1] Start on mobile, continue on desktop
We're excited you're ready to join the Tandem community!
Please register your account on our mobile app first, then - if you're a desktop lover - come back to our web app to continue learning.Download the app

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[H1] Frequently asked questions
[H2] Frequently asked questions
[H3] What is Tandem and how does it work?
Launched in 2015, Tandem is the mobile app that brings together millions of language learners. Members of the community form one-on-one Tandem partnerships to teach each other their native languages via text, audio, and video chat. Tandem has funding from some of Europe’s most prominent investors and is supported by the Tandem Fundazioa, the organization that developed the tandem language learning method.
On the Tandem app, after filling out your application and being accepted into our community, you will be shown members from all over the world who speak the language(s) you want to learn and who want to learn the language(s) you speak. You will then be able to reach out to other members of the community and start your language exchange. We hope you learn lots and have a great time meeting new friends!
[H3] What is a language exchange?
Language exchange actively goes by many different terms— conversation exchange, intercambio, tandem.
Regardless of which term you might be familiar with, they all have the same definition:
“Language exchange is a method of language learning based on mutual language practicing by learning partners who are speakers of different languages. This is usually done by two native speakers teaching each other their native language.” — Wikipedia
In other words, language exchange is the process of joining forces with someone, known as your language exchange partner, who is ideally a native speaker of the language you want to learn. Through a two-way process of direct communication and conversation, both learners are given the opportunity to improve their target language skills and proficiency while simultaneously fostering intercultural competence.
Read more about language exchange here.
[H3] What are the Tandem Community Guidelines, and what happens when I break them?
Tandem’s mission is to connect the world through languages. We're here to spark meaningful conversations, learn languages, and celebrate our different cultures.
Our Community Guidelines are grounded in three core principles that serve our mission and help our members get the best language exchange experience:
We are here to learn.
We celebrate our diversity.
We share generously.
We take care of each other and stand ready to protect our community from those who act against our guidelines. Depending on the severity of the community guideline you have broken, you will receive a warning or a ban from one of our Community Safety team. If you receive a warning for a second time within a 6-month period, you will be banned from the community.
[H3] Where can I download Tandem?
Tandem is available to download on iOS and Android devices as well as our web app which can be found here.
You can download Tandem from the Google Play Store and Apple's App Store.
[H3] How many members from different countries and cities do you have on Tandem?
We have Tandem members in over 180 countries and thousands of cities around the world. Here’s a list of the most popular cities in English and in German.
[H3] What languages can I learn and teach on Tandem?
We have a whopping 300 languages to learn and teach on Tandem. Everything from German to Tok Pisin and Walloon to Lozi. You can find a list of our most popular languages here, and a full list of languages here.
[H3] Why are my messages showing as sent but not delivered?
If you send a message to your language exchange partner and they have their status set to “offline” on Tandem, they are not connected to the internet at the time, or are having connection issues, your message will remain as “sent” until they come back to their chat list and refresh their chat stream. Your message will then be marked as “delivered” until they have read your message which will be marked as “read”.
[H3] I submitted my application but haven’t been accepted into the community yet. Why is this?
Your application can get rejected for several reasons, including if you’re under 16 years of age, or haven’t used a real profile photo or name. Each application is individually reviewed, which can also take time, and occasionally, there is a waitlist in certain countries to keep our community and languages balanced.
[H3] How can I cancel my Tandem Pro membership?
You can review, cancel or edit your Tandem subscription anytime.
If you have an iOS device, go to Settings -> Tap on your name -> Apple ID -> Subscriptions -> Tandem.
If you have an Android device, open the Google Play Store app, and then tap Menu -> My Apps -> Subscriptions -> Tandem.
[H3] How can I get a refund?
If you are using an Android device and purchased a subscription from the Google Play store, you are eligible for a refund if you get in touch with us within 14 days of a 1-month subscription or within 30 days of a 3-month or 12-month subscription.
If you’re using an Android device and it has been less than 48 hours since you purchased your subscription, you can request a refund from Google Play. If it has been more than 48 hours since your purchase, please forward your Google Play receipt and your email address to us so we can issue your refund.
If you are using an iOS device, please request a refund from iTunes via the link in your purchase confirmation email within 14 days of your subscription purchase.
[H3] How can I report someone?
To ensure Tandem remains a safe and friendly place to learn languages, our community relies on all of us to report members who act against the Tandem Community Guidelines.
There are two ways to report someone, either on the screen where you chat with them or on their profile. To report a member from the chat with them:
Tap the three dots button in the top right-hand corner.
Tap “Report (name of the member).”
Choose one of the report reasons and include as much additional information as possible.
Finally, tap the “Report to Tandem” button to make your report.
To report someone from their profile:
Tap the warning mark (!) in the top right-hand corner.
Choose one of the report reasons and include as much additional information as possible.
Finally, tap the “Report to Tandem” button to make your report. In order for the Community Safety team to review your report as quickly as possible, please remember to attach your conversation history as evidence when making the report.
Our community takes reports very seriously. The Community Safety team reviews each report, and if there is evidence that the member you reported acted against any of the Community Guidelines, they will be warned or their account will be banned. Don’t worry – the member won’t be notified that you reported them! The Community Safety team may contact you directly if they need additional information to resolve the report.
[H3] Why did I receive a warning?
You have received a warning because you were reported by another Tandem member for breaking the Tandem Community Guidelines. The Community Safety Team has reviewed the evidence and decided to give you a warning. By using Tandem, you agree to Tandem’s Terms of Service and violating these again will result in your account being permanently banned. Follow the link to find the full text of our Terms of Service.
[H3] Why have I been banned from Tandem?
You have been banned from Tandem because you broke the Tandem Community Guidelines. By using Tandem, you agree to Tandem’s Terms of Service. Tandem reserves the right to ban your account if you violate these terms.
[H3] How can I delete my account?
We’re sorry to hear that you want to leave the Tandem community. If you have an active account you can permanently delete it by going to your Profile -> Settings -> Delete my account. Please keep in mind that deleting your account will not cancel your Tandem Pro subscription.
If you haven't been accepted into the community yet, you will be able to delete your application yourself after waiting for 7 days. Simply tap the "cancel my application" button and the information you gave in your application will be deleted.
You can read more about our privacy policy here.
[H3] Are professional tutors still available on Tandem?
In 2020, we decided to discontinue the Tandem Tutors feature to focus on what we do best: facilitating authentic 1:1 language exchanges between members. We deeply appreciate all the tutors who shared their expertise and contributed to our community. Now, Tandem is all about helping you connect with native speakers for meaningful conversations and immersive language practice.

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[H1] Our Tandem Story
[H2] Connecting the world through languages.
There are many stages of learning a language. We start by picking up the basic vocabulary, progress to formulating simple sentences, and then wonder why on earth the grammar can’t just be simple for once. Somewhere down the line, we realize it’s time to talk with a native speaker and practice everything we’ve learned so far. That’s where language exchange or Tandem language learning comes in.
Connecting with other people has never been so easy. Despite this, it's often hard to find the right language exchange partner, one who shares our interests and has similar language goals.
What if there was a convenient and accessible way to connect with like-minded native speakers of the language you want to practice?
Tandem was launched in 2015 by three friends on a mission to connect the world through languages. Thanks to our international team of language lovers based in Berlin, we’ve come pretty far since then.
Today, 35+ million members from around the world use our mobile and web apps to help each other learn new languages via text, audio, and video chat. Join the Tandem community and you can speak any language too!Sign up for free