Real store listing. Store data comes from public listings; the assessment type and evidence coverage are labeled on this page.

Tandem: Language exchange

Practice a language with native speakers and take it to the next level.

Tripod Technology GmbH
Multiple ad networks — Code from multiple ad networksPrice stated / one-time — States a price, or offers a one-time purchaseDeletion (dev says) — Developer says you can request data deletion
Google Play rating4.1★416.9K ratings
PriceFreeIn-app purchases
Age4+Store age rating
CategoryEducation

At a glance

Full report

From our automated analysis, 10 Oct 2026. Every label links to its evidence in the full report below.

This analysis describes version 6.36.1 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-10 . The app may have changed since.

The store currently lists version 6.37.1, updated 2026-10-16.

The app has been updated since this analysis. The findings on this page describe version 6.36.1, not the version now listed on the store.

The developer’s release notes for the newer versions, where we hold them, are in Versions and dates analysed.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4Screenshot 5Screenshot 6Screenshot 7

Store screenshots supplied by the developer.

About this app

Practice a language with native speakers and take it to the next level.

Whether you’re aiming to learn a new language or improve fluency in one you already know, having engaging conversations with an exchange partner makes all the difference. You can even learn a language with international friends while expanding your skills and cultural understanding.

Whatever your language goal is—language learning for travel, business, or personal growth—you can reach it while meeting new people and making friends around the globe. It’s easy: just choose a language you want to learn, find a Tandem member with similar interests, and you’re ready to go!…

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

3 published · 3 shown, not confirmed

Things to watch for 1

Findings that met the published evidence standard.

Multiple ad networks bundled

Measured

Bundles 4 distinct ad networks / mediation SDKs: Amazon Publisher Services, AppLovin MAX, Google Mobile Ads (AdMob / Ad Manager), Meta Audience Network

Sources
SDKs in the app package
Agreement
A measured fact from one deterministic, checkable source.
Where measured
Found in the Android app’s package
Definition

The package embeds several distinct advertising or mediation SDKs — a stack built for ad volume, not for a single house ad.

Package artefact

sha256:6ebc8ae0bcfcb43b7af2ba28275101cb603749d2b411ae15611ea3cb1b96c772

Positives 2

Specific evidence of a useful property, within the stated scope.

States a price, or offers a one-time purchase

Measured

Offers a one-time or lifetime purchase: "One-time purchase"

Sources
The app's own on-screen text
Agreement
A measured fact from one deterministic, checkable source.
Where measured
Found in the Android app’s package
Definition

The app's own text offers a one-time or lifetime purchase, or reviewers report that the price is stated clearly.

Package artefact

sha256:6ebc8ae0bcfcb43b7af2ba28275101cb603749d2b411ae15611ea3cb1b96c772

Developer says data deletion can be requested

Measured

The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text

Sources
The store listing
Agreement
A measured fact from one deterministic, checkable source.
Where measured
From the Google Play listing
Definition

The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.

Open evidence

One source only — shown, not confirmed 3

Open observations that have not cleared the evidence bar.

Aggressive ad load

One source only

Aggressive ad load: raised by 17 distinct reviewers (3.3% of 519 reviews scanned)

Sources
User reviews
Agreement
Only one kind of source so far. Shown, not counted.
Where measured
From Google Play reviews

This observation has not cleared the required evidence standard.

Definition

Advertising volume or placement that interrupts normal use: ads between every action, unskippable or forced full-screen ads.

Open evidence

Paywall blocks the basics

One source only

Paywall blocks the basics: raised by 7 distinct reviewers (1.3% of 519 reviews scanned)

Sources
User reviews
Agreement
Only one kind of source so far. Shown, not counted.
Where measured
From Google Play reviews

This observation has not cleared the required evidence standard.

Definition

The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.

Open evidence

Countdown-timer purchase pressure

One source only

Deadline pressure in the app's own copy: "Offer ends in"

Sources
The app's own on-screen text
Agreement
Only one kind of source so far. Shown, not counted.
Where measured
Found in the Android app’s package

This observation has not cleared the required evidence standard.

Definition

The app's own purchase copy attaches a deadline to buying — a countdown, 'offer ends in', 'limited time' — or ships a countdown view on a purchase-screen layout.

Package artefact

sha256:6ebc8ae0bcfcb43b7af2ba28275101cb603749d2b411ae15611ea3cb1b96c772

What reviewers report

519 reviews read · 2 review-based observations

519 reviews read for this analysis. Each observation keeps the sample and store it was based on.

Aggressive ad load

Shown, not confirmed

Hi I love this app, but as a free user, PLEASE change the ad feature!! I don't care about ads, but there is an ad every 2 seconds that I can't even click around the app because it keeps taking me to the ad sites. If you don't you will…

1★ · Google Play · 2026-06-17

from 2025 this app has become useless. full of adds. interactions are lame.

1★ · Google Play · 2026-09-12

It's a great app, but they going to lose all users because of the excessive ads. It became impossible to use the app because of the ads🤬 You're going to self-destruct this way.

5★ · Google Play · 2026-06-19

Paywall blocks the basics

Shown, not confirmed

Tandem has become an empty Wild West ghost town - just a hollow shell of what it used to be, thanks to aggressive monetization. Before, you could freely select more of the languages you know. Now you have to pay a fee just to enter what…

1★ · Google Play · 2026-07-24

The app keeps experiencing bugs with every update and the developers have run out of ideas to improve the app. Instead they have decided to start charging for free features. Endless hours in party's? Used to be free, now you pay. Learn…

1★ · Google Play · 2026-07-09

everything is paid now, people using it as Tinder, and it's buggy in a very annoying way

1★ · Google Play · 2026-07-05

A sampled review illustrates one person’s experience. It does not establish a finding on its own.

Measurements

8 measured · 0 not assessed

Supporting measurements. They are not a complete list of possible harms or positives. “Not assessed” means we could not measure it — never zero, never a pass.

From store data and reviews

Developer replies to reviews
Replies to at least 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Does not say how to cancel
Themes reported by reviewers
2 themes reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
Under 65% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.

In the app package we scanned

Android package 6.36.1, scanned 8 Oct 2026. These describe that package, not the current store version.

Sensitive permissions
3–5 requested
Counted against a fixed list of eighteen sensitive Android permissions: sixteen runtime permissions, among them location, camera, microphone, contacts and SMS, and two the user must switch on in system settings, drawing over other apps and usage access. Requesting one is not itself a finding.
Analytics or tracking SDKs in the scanned package
3 or more found
Advertising SDKs in the scanned package
3–9 found
Counted as distinct SDKs in the package we scanned. One mediation bundle can contribute several, so this is not a count of advertisers.

Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Assessed 10 Oct 2026

This analysis describes version 6.36.1 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-10 . The app may have changed since.

The store currently lists version 6.37.1, updated 2026-10-16.

The app has been updated since this analysis. The findings on this page describe version 6.36.1, not the version now listed on the store.

Release notes for the newer versions, in the developer’s own words:

Version 6.37.1 · 2026-10-16

No release notes were provided for this version.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

Google Play

Version 6.37.1 · 2026-10-16

No release notes were provided for this version.

Version 6.37.0 · 2026-10-01

No release notes were provided for this version.

Version 6.36.1 · 2026-10-01

No release notes were provided for this version.

Assessment record

Status
Automated analysis
App identifier
tandem-google-net-tandem
Assessment date
10 Oct 2026
Sources used
6 independent signals: user reviews, SDKs in the app package, the app's own on-screen text, the app manifest, the store listing and the store privacy disclosure
Reviews read
519
Package examined
Android · 6.36.1 · scanned 8 Oct 2026
Measurement vocabulary
1.4
Human inspection
Not completed

Assessed 2026-10-10 from 519 user reviews, the app's package, the store listing and its privacy label.

How this page was produced

Analyzed 2026-10-10 Version analyzed: 6.36.16 independent signals519 reviews scannedConfidence: HighNot human-reviewedVocabulary v1.13Methodology v1.3
Signals run: user reviews, SDKs in the app package, the app's own on-screen text, the app manifest, the store listing and the store privacy disclosure.

Store facts

Google Play

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

Google Play

Store rating
4.09 ★ · 416,932 ratings
Version
6.37.1
Updated
16 Oct 2026
Price
Free · In-app purchases
Age rating
4+
Size
Not supplied
Open in Google Play
Developer
Tripod Technology GmbH
Category
Education
Listing price
Free · In-app purchases

Purchases the store lists

 What this app sells
Google Play doesn’t publish per-purchase prices, so this list covers the other store only.

Method and limits

What this report can and cannot show

How the automated analysis works

This assessment is produced automatically. Six independent signals are read — user reviews, SDKs in the app package, the app's own on-screen text, the app manifest, the store listing and the store privacy disclosure — and each candidate finding is filed under the sources that support it.

No charge stands on one kind of evidence — with one published exception. A finding is either a measured fact that anyone can reproduce (an ad SDK is in the package; every subscription bills weekly; the privacy label omits a tracker we can see), or it is an interpretation — and an interpretation needs independent sources to agree before it reaches the catch list. The exception is a harm only users can see: a charge may publish from reviews alone, as “Reported by N users”, once enough reviewers raise it to clear that charge’s own published bar. That agreement rule is what replaced the human reviewer, not a model’s confidence.

There is no overall score, on purpose. A 0–99 number was published here until 2026-09-15. It was withdrawn because it discriminated too weakly to be the instrument — 44.7% of every pair of apps tied — and because a single number is a verdict where a count is an observation. What publishes instead is a row of measurements, each of which says what was counted and, where we could not look, says that instead.

Findings under One source only are real reports we do not stand behind as findings. They are shown because withholding them entirely would hide a genuine complaint, and labelled because publishing them as charges would be an accusation off a single source.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A hands-on test can confirm or contradict a finding and adds its own measurements; it does not change a measurement row. Hands-on inspections are not yet open.

Request a correction

[email protected]

Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.