Comparison

WDR AR 1933 vs Hidden Codes

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

Head to head
About

WDR AR 1933

Experience historical events through augmented reality. Witness firsthand accounts of children and teenagers during the Nazi era, brought to life with 3D holograms and immersive visuals. Explore stories of war, survival, and the impact of historical events.

Highlights
  • Augmented reality historical experiences
  • 3D holographic witness testimonies
  • Immersive 3D animations
  • Stories from the Nazi era
  • Classroom and home use
  • Available in English
Read full description

Let augmented reality take you right into their stories, and experience up close how children and teenagers experienced the "Third Reich". The last contemporary witnesses are at an advanced age, some over 90 years old. They were young during a time of horror. Now you can bring them into your home or classroom with the app WDR AR 1933-1945. Also available in English! As the witnesses tell their stories, you see 3D visual elements: You find yourself in the middle of a battle in World War Il or stand in front of a fence in the Bergen-Belsen concentration camp. Anne Frank's friend Hannah tells of her last encounter with her there. As you discover these stories in your classroom, London is in flames, German bombers fly over your head in an attack squadron. HOW IT ALL WORKS The app is easy to use: Aim your smartphone camera or tablet at an empty space on the floor two metres away from you. As you aim, move your camera to scan the floor. A white circle appears. Wait until the circle is filled. That is how you position the contemporary witnesses like a hologram. As they tell their story, you can look around the room and live the experience with your smartphone or tablet. WHAT IT’S ALL ABOUT Our app explores three chapters from the Nazi era: The first one, "Children of War", shows the war through children's eyes. There are three stories: Anne from Cologne experiences the war in an air raid shelter. "It was hell," she says. Vera talks about the Blitz on London in which she loses her father. And Emma recalls the German Siege of Leningrad (now St. Petersburg). Over a million people perish because Hitler is intent on starving the city. In the chapter "My Friend Anne Frank", her best friends recall the days of their youth, as well as Anne's arrest and death in the Bergen-Belsen concentration camp. With Augmented Reality, this National Socialist crime against humanity becomes tangible in a completely new way. In "18 and Sent to War" Wehrmacht soldiers talk about being frightened to death and their feelings of guilt. At the age of 18, Jürgen becomes a tank commander responsible for 24 soldiers. And at the same age, Willi is sent to war against his will. What is it like to be sent to war as a young person and become part of a murderous regime? WHAT AUGMENTED REALITY MEANS Augmented reality, or AR for short, is a technology that allows you to discover in a real room virtual images of contemporary witnesses, as well as three-dimensional animations and additional information. Augmented reality blends the real world with virtual elements. It lets the contemporary witnesses sit across from you like holograms or walk through the room and tell you what they experienced during the Nazi era. The stories are short, around three to five minutes, but very intense and moving. Use your tablet or smartphone to bring all these 3D animations and holograms into any room you choose. TECHNICAL NOTES: Use Wi-Fi to download the app! The full app has a data volume of about 2 GB.

About

Hidden Codes

This educational game simulates a social media environment to teach young people about online radicalization. Players learn to identify problematic content and understand how extremist groups use digital media. It addresses topics like political codes, conspiracy myths, and how to respond to radicalization in one's social circle.

Highlights
  • Simulated social media environment
  • Identify problematic content
  • Understand extremist online tactics
  • Learn about political codes and myths
  • Guidance on responding to radicalization
Features
Read full description

HIDDEN CODES ist ein Mobile Game der Bildungsstätte Anne Frank und widmet sich dem Thema Radikalisierung im Netz. In einer simulierten Social Media-Umgebung chatten die Spieler*innen, durchstöbern Profile und reagieren auf Storys und Kommentare anderer Nutzer*innen. Die App befähigt junge Menschen spielerisch dazu, problematische Inhalte oder Aussagen zu erkennen und kompetent darauf zu reagieren: Wie nutzen radikale Gruppen digitale Medien, um zu für ihre Zwecke zu mobilisieren? Welche politischen Codes und Verschwörungsmythen werden im Netz verbreitet? Was kann ich tun, wenn ich mitbekomme, dass sich jemand in meinem Umfeld radikalisiert? Spezifische Themen und Elemente rechter und islamistischer Radikalisierung werden in einzelnen Episoden beleuchtet.

Screenshots

WDR AR 19334 screens
Hidden Codes3 screens

Verdict

The call

The clearest difference is review sentiment: WDR AR 1933 at 91% against Hidden Codes's 47%. WDR AR 1933 also leads on rating (2.3 vs 1.0) and ratings volume (7 vs 1). Hidden Codes's advantage is update cadence (every 2 months vs every 10 months). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

WDR AR 1933 holds the better App Store score, 2.3 against 1.0. That said, the two scores are not equally well evidenced: WDR AR 1933 has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 91% of WDR AR 1933's written reviews are positive against 47% of Hidden Codes's.

UpkeepUpdate frequency

WDR AR 1933 ships an update every 10 months, Hidden Codes every 2 months. Both last shipped on September 22, 2026.

Scorecard4 real differences · 6 level
WDR AR 1933 versus Hidden Codes: the parameters behind the verdict, then further details
ParameterWDR AR 1933Hidden Codes
PriceFreeFree
Rating2.3 (7 ratings) — better1.0 (1 ratings)
Positive reviews90.9% of reviews — better47.4% of reviews
Number of ratings7 — better1
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.014.0
Further details — not scored
Size1.7 GB202 MB
Age rating17+12+
DeveloperWDRMeron Mendel

Customer experience

WDR AR 1933

All ratings7 ratings
Positive28.6%
Neutral0.0%
Negative71.4%
Written reviews22 reviews
Positive90.9%
Neutral0.0%
Negative9.1%

Hidden Codes

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews19 reviews
Positive47.4%
Neutral21.1%
Negative31.6%

In-app purchases

None

WDR AR 1933

No in-app purchases

None

Hidden Codes

No in-app purchases

Questions

Is WDR AR 1933 free?
WDR AR 1933 is free to download, with no in-app purchases.
Is Hidden Codes free?
Hidden Codes is free to download, with no in-app purchases.
Which has better reviews, WDR AR 1933 or Hidden Codes?
WDR AR 1933 is rated higher. WDR AR 1933 averages 2.3 out of 5 from 7 ratings, while Hidden Codes averages 1.0 from 1 ratings.
Do WDR AR 1933 or Hidden Codes have ads?
Neither WDR AR 1933 nor Hidden Codes shows ads.
Which is updated more often, WDR AR 1933 or Hidden Codes?
WDR AR 1933 ships an update every 10 months, and Hidden Codes every 2 months. Most recently, WDR AR 1933 was updated on September 22, 2026 and Hidden Codes on September 22, 2026.

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