Comparison

Tandem vs Mi Robot Builder Global

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tandem

Connect with native speakers globally to practice and learn new languages through text, voice, and video calls. This community-driven app helps you boost vocabulary, perfect pronunciation, and grasp grammar with features like in-app translation and message correction.

Highlights
  • Connect with native speakers
  • 1-to-1 chats
  • Group audio learning (Parties)
  • In-app translation
  • Voice and video calls
  • Message correction
Features
Currently charting
Read full description

**Tandem language exchange is the process of joining forces with someone who is a native speaker of the language you want to learn** Languages are a 'learn by doing' kind of thing. This particular method is at the heart of Tandem, the global language exchange community. Connect with native speakers, start chatting and finally reach fluency in the language you’re learning! Learn, connect, and share with 1-to-1 chats or try out Parties, the ultimate group learning audio space. There are millions of Tandem members with just as many interests, so find your people – and start speaking their language today! Reach fluency in 300+ languages, including Spanish, English, Japanese, Korean, German, Italian, Portuguese, Russian, Simplified and Traditional Chinese, and 12 different sign languages, including American Sign Language. Why Tandem helps you to practice and learn languages: BOOST YOUR VOCABULARY For the times when you’re struggling to find the correct words, our in-app translation feature helps you compose a message or translate an incoming one. PERFECT YOUR PRONUNCIATION Fit in with the locals and improve your speaking skills using voice notes, audio and video calls. GRASP THE GRAMMAR Help each other grasp the difficult parts of language learning with our message correction and comment features. TANDEM YOUR WAY Forget strict schedules and learning by the book. Embrace your personal language learning style—whether that’s messaging, calling, or even meeting in person. DOWNLOAD TANDEM AND MASTER ANY LANGUAGE NOW! ______________ How to learn languages on Tandem: 1. Select the language(s) you want to learn in the app 2. Tell us about your language learning goals and your ideal Tandem partner 3. Search for native speakers of your target language in the community 4. Kick-off your language exchange experience by sending your first message 5. Share topics with the Tandem community so you can have meaningful conversations about what interests you 6. Keep up the conversation with your new Tandem “pen pal” and speak like a native in no time! While many features are free, you can choose to subscribe to Tandem Pro to access all the features on the app. Your subscription will automatically renew unless auto-renew is turned off at least 24-hours before the end of the current payment period. Your iTunes account will be automatically charged at the same price for renewal within the 24-hour period prior to the end of the current payment period unless you change your subscription preferences in your Account Settings. ______________ App Access Permissions: Optional permissions: - Location information: Required to use the Nearby feature to see members near you, the Travel feature to show members around the world and to add an approximate location to your profile. - Microphone: Required for sending audio messages, making audio and video calls, and joining Language Parties. - Camera: Required for taking photos to upload to your profile or post in a Language Club, take and send a photo in a chat, video calling, and scanning QR codes. - Notifications: Used to send you notifications about acceptance into the community, new messages, new followers and their posts, new references and marketing communication. - Nearby devices: Bluetooth access is required to connect audio devices during a call or Language Party. You can still use Tandem without granting optional permissions, except features where their nature requires the respective permission, like a video call requiring camera permission. Got a question? Contact us on support@tandem.net Licenses: Tandem – Language Exchange is licensed by Tandem Fundazioa (http://tandemcity.info) Privacy policy: https://tandem.net/privacy Terms of Service: www.tandem.net/pages/termsofservice

About

Mi Robot Builder Global

Control and program a robotic toy through your portable device. Plan routes, use a virtual joystick, or leverage your device's gyroscope for movement. Create custom programs with modular coding and personalize robot settings.

Highlights
  • Bluetooth robot control
  • Route planning
  • Virtual joystick control
  • Gyroscope control
  • Modular programming
  • Robot customization
  • Electronic building instructions
Features
Read full description

This is the compatible APP for Mi Robot Builder. By using this APP, you can connect your portable devices with robot through blue tooth, and experience intellgent controll of your robot with great diversity of methods. Better than the traditional remote joystick controllor, this APP, going with Mi Robot Builder, can bring you joy, fun and creativity. Main features: 1.Plan the route for your robot, By printing the expected route on the screen in “Route Planning” mode, you can plan the move line for your robot in a very staight forward way. 2.Stimulate the joystick for your robot control,When in “Controllor” mode, you can transform your mobile deviece into a stimulated traditional controllor and experience joystick control for your robot to move forward,backward or make turns , just like with a real one. 3.Use assambled mobile gyroscope for your robot contol When in “Gyrostabilizer”mode, the move direction is captured from the mobile gyroscope system. You can regard the gyroscope on the screen as the direction controllor for your robot. 4.Program for your robot,In the “Programming” mode there is infinite contol method and robot movement that can be realized by you through modular programming. You can write a program by easily combine the code megnet, which gets rid of all the complicated code sentences and leaves you only the mavellous logic and endless fun of programming. 5.Make personal setting for your robot In the setting page, you can set up your robot through mobile. You can give it a unique name, change the speaker volumn or select the motor mode. Your can also switch languages between Chinese and English. 6.Open the electronic building instruction book You can open a electonic building instruction book on your mobile, which has same content as the paper one. This electronic editon is designed to be user-friendly that you can zoom in and zoom out in any scale you like.

Screenshots

Tandem4 screens
Mi Robot Builder Global3 screens

Verdict

The call

The clearest difference is in-app purchases: Mi Robot Builder Global at none against Tandem's 14. Mi Robot Builder Global also leads on ads (none vs shown) and rating (5.0 vs 4.6). Tandem's advantage is update cadence (every 6 days vs every 3 months) and ratings volume (38K vs 5). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Tandem sells 13 in-app purchases, starting at $14.99 per month. Mi Robot Builder Global asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Mi Robot Builder Global holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Tandem has 38K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 47% of Tandem's written reviews are positive against 25% of Mi Robot Builder Global's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Tandem ships an update every 6 days, Mi Robot Builder Global every 3 months. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

Scorecard9 real differences · 2 level
Tandem versus Mi Robot Builder Global: the parameters behind the verdict, then further details
ParameterTandemMi Robot Builder Global
PriceFreeFree
Rating4.6 (38K ratings)5.0 (5 ratings) — better
Positive reviews47.4% of reviews — better25.0% of reviews
Number of ratings38K — better5
Update frequencyEvery 6 days — betterEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#151 — better—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.08.0 — better
Further details — not scored
Size301 MB84 MB
Age rating17+4+
DeveloperTripod Technology GmbHBeijing IQI Technology Co.,Ltd.

Customer experience

Tandem

All ratings38,431 ratings
Positive89.8%
Neutral4.3%
Negative5.9%
Written reviews2,445 reviews
Positive47.4%
Neutral8.3%
Negative44.3%

Mi Robot Builder Global

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews24 reviews
Positive25.0%
Neutral4.2%
Negative70.8%

Bugs and requests

Tandem

Reported bugs

3 issues
  • Messages not being delivered or synced properly
  • Frequent crashes and app instability
  • Login and account issues when switching devices

Requested features

4 requests
  • Better search and filtering options
  • Ability to save/review past conversations
  • Group chat or language party features
  • More language options beyond just popular ones

Mi Robot Builder Global

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Tandem

Subscriptions13
  • Tandem Pro$14.991 Month
  • Tandem Pro7 Days trial$14.991 Month
  • Tandem Pro - 1 Month$14.991 Month
Show 10 more
  • Tandem Pro Plus - 1 month7 Days trial$14.991 Month
  • Tandem Pro$26.903 Months
  • Tandem Pro7 Days trial$26.903 Months
  • Tandem Pro$38.991 Year
  • Tandem Pro Intro - 12 months$39.991 Year
  • Tandem Pro Plus - 12 months7 Days trial$64.991 Year
  • Tandem Pro7 Days trial$69.901 Year
  • Tandem Pro1 Year trial$69.901 Year
  • Tandem Pro$69.991 Year
  • Tandem Pro Intro - 12 months7 Days trial$80.001 Year
None

Mi Robot Builder Global

No in-app purchases

Questions

Is Tandem free?
Tandem is free to download, with in-app purchases available.
Is Mi Robot Builder Global free?
Mi Robot Builder Global is free to download, with no in-app purchases.
Which has better reviews, Tandem or Mi Robot Builder Global?
Mi Robot Builder Global is rated higher. Tandem averages 4.6 out of 5 from 38K ratings, while Mi Robot Builder Global averages 5.0 from 5 ratings.
Do Tandem or Mi Robot Builder Global have ads?
Tandem shows ads; Mi Robot Builder Global does not.
Which is updated more often, Tandem or Mi Robot Builder Global?
Tandem ships an update every 6 days, and Mi Robot Builder Global every 3 months. Most recently, Tandem was updated on October 18, 2026 and Mi Robot Builder Global on October 15, 2026.

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