Independent automated assessment · 6 signal sources · 959 reviews scanned · analyzed 2026-10-06.
4.7 ★101,587 ratings
10M+Downloads
4+Age rating
105 MBApp size
FreeIn-app purchases
About this app
Looking to learn how to play chess? Meet Dr. Wolf, the ideal chess coach and companion. Dr. Wolf explains everything to you step-by-step, points out strategic ideas, and alerts you to your mistakes. Whether you are a chess beginner eager to learn the basics or an intermediate player looking to refine your strategy, Dr. Wolf tailors the learning experience to your individual needs, offering over 50 comprehensive chess lessons and interactive guidance at every step.
**Why Choose Learn Chess with Dr. Wolf?**
- **Personalized Coaching:** Experience the unique teaching method of Dr. Wolf, who not only instructs but also plays alongside you, providing insights into every move. He will introduce topics to you as you play chess, ensuring you grasp the “why” behind each move. - **Audible Coaching**: Dr. Wolf speaks out-loud. Actual audio! Experience the unique advantage of having Dr.…
Preview
Real screenshots from the store listing.
Independent evidence report
Evidence and review signals
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
App Store
This analysis describes version 3.14.0 of the app, analyzed 2026-10-05 . The app may have changed since.
The store currently lists version 3.16.0, updated 2026-09-29.
The app has been updated since this analysis. The findings on this page describe version 3.14.0, not the version now listed on the store.
Release notes for the newer versions, in the developer’s own words:
Version 3.16.0 · 2026-09-29
Hello students! Dr. Wolf is back with an exciting checkmate patterns lesson: Common Queen and Bishop Mates! We have also fixed some bugs and made general quality-of-life improvements. Enjoy!
Google Play
This analysis describes version 1.56.0 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-06 . The app may have changed since.
The store currently lists version 1.56.0, updated 2026-08-29.
What we measured
Each line is a measurement published as a measurement, never a verdict.
Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.
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
No theme 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
80–89% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.
In the package we scanned
From the package we downloaded and read — version 1.56.0, scanned 2026-09-17.
Permissions Android classifies as dangerous
None requested
Counted against the eighteen permissions listed in collect-package.ts. A dangerous permission is one Android asks the user to grant; requesting one is not itself a finding.
Analytics or tracking SDKs in the scanned package
1–2 found
Advertising SDKs in the scanned package
None found
Counted as distinct SDKs in the package we scanned. One mediation bundle can contribute several, so this is not a count of advertisers.
Graded bands · predicate set 1.4 · how these are measured
What the analysis found
App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.
Positive evidence 3
Things this app does right, published at the same strengths as the catch list.
States a price, or offers a one-time purchase
The app's own text offers a one-time or lifetime purchase, or reviewers report that the price is stated clearly.
What we saw: Offers a one-time or lifetime purchase: "One time purchase"
No advertising SDKs
No advertising or mediation SDK of any kind was found in the package.
What we saw: No advertising or mediation SDK among the 8 SDKs detected in the package
Developer says data deletion can be requested
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.
What we saw: 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
One source only — shown, not confirmed 1
A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.
In the app's own text: Paywall with no way past it
A paywall screen ships with no dismiss, skip or 'maybe later' affordance anywhere in the package, so the app's own text offers no way in without paying.
What we saw: Ships a purchase screen ("paywall") with no dismiss, skip or "continue free" text anywhere in the package
Assessment & version history
App changes and Appworthy events in one timeline.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown0
Lowest—
Highest—
Google Play does not publish per-purchase prices.