Comparison

Kitty Q vs The Unstoppables 2

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

Head to head
About

Kitty Q

Embark on a quantum adventure to solve puzzles and help a cat escape superposition. Explore the bizarre rules of the quantum world with guidance from a physicist's descendant. Discover over 20 scientific facts about quantum physics through engaging challenges.

Highlights
  • Quantum physics puzzles
  • Explore quantum world rules
  • Learn scientific facts
  • Character guidance
  • Unique cat adventure
Features
Read full description

What the heck? Unsuspecting, you open the front door wide to find a box containing … a half-dead cat!? Using smart puzzle skills and clever outside-the-box thinking, you can help Kitty Q to escape her peculiar quantum superposition!   Don’t worry—Anna is there to help you. She’s the great-granddaughter of the world-famous physicist and Nobel Prize winner, Erwin Schrödinger. She will help you guide Kitty Q out of the crazy quantum world. Inside the box, everything follows its own curious rules. It really is an odd world here as Anna explains, but together you get to explore her great-grandfather Erwin Schrödinger’s specialist subject: quantum physics. Every puzzle in the game refers to observations, experiments, or phenomena from this totally unbelievable field of science. It’s a whole new world to discover!   So, you’ll get to know… · why some tiny particles absolutely contradict all the rules at times, · which letter will make your math teacher sweat, · how you look in a selfie with a self-styled, half-dead cat!   In Kitty Q, you will discover more than 20 scientific facts about quantum physics that will amaze everyone.  The quantum adventure Kitty Q has been developed in collaboration with the Cluster of Excellence* ct.qmat and is completely free and without ads or in-app purchases—thanks to the funding of the German Federal Ministry of Education and Research as part of the initiative ‘Research in Germany’.   *A Cluster of Excellence is a team of outstanding scientists who explore new challenges and unsolved puzzles. The answers that they find could have a crucial impact on our lives in the future. For ct.qmat, quantum physics takes center stage.

About

The Unstoppables 2

Join a group of friends on a mountain adventure to find a missing dog. Explore the wilderness, overcome challenges, and work together to bring Tofu home safely. This game is part of an educational series focusing on diversity.

Highlights
  • Mountain exploration
  • Dog rescue mission
  • Teamwork challenges
  • Educational content
  • Story-driven gameplay
Features
Read full description

The friends actually wanted to take it easy, spend a few vacation days at Mai's parents' vacation home in the mountains, hiking, lazing around and canoeing. But as Melinda is packing, she receives devastating news from Mai. Tofu has disappeared! Instead of taking the public transport, she had sent her dog ahead with Mai and her parents. And now he's disappeared! Again! But even this time the different friends Mai, Jan, Achim and Melinda don't give up and they even get reinforcements: this time Rina is also along for the ride. The search begins at Rina's home and leads into the mountains. Will you manage to rescue Tofu together with the Unstoppables? ### The game was developed as part of the teaching material "Principle of Diversity", which deals with the topic of "Being the same and being different" and is part of a series. The predecessor game "The Unstoppables 1" is available in the App Store.

Screenshots

Kitty Q3 screens
The Unstoppables 24 screens

Verdict

The call

The clearest difference is rating: Kitty Q at 4.9 against The Unstoppables 2's 2.7. Kitty Q also leads on ratings volume (400 vs 3) and iOS requirement (11.0 vs 15.0). The Unstoppables 2's advantage is update cadence (every 4 months vs every 13 months) and review sentiment (100% vs 91%). 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

Kitty Q holds the better App Store score, 4.9 against 2.7. That said, the two scores are not equally well evidenced: Kitty Q has 400 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 91% of Kitty Q's written reviews are positive against 100% of The Unstoppables 2's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Kitty Q ships an update every 13 months, The Unstoppables 2 every 4 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Kitty Q versus The Unstoppables 2: the parameters behind the verdict, then further details
ParameterKitty QThe Unstoppables 2
PriceFreeFree
Rating4.9 (400 ratings) — better2.7 (3 ratings)
Positive reviews91.4% of reviews100.0% of reviews — better
Number of ratings400 — better3
Update frequencyEvery 13 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size1.3 GB155 MB
Age rating9+4+
DeveloperPhilipp StollenmayerSchweizerische Stiftung fuer das cerebral gelaehmte Kind

Customer experience

Kitty Q

All ratings398 ratings
Positive97.2%
Neutral1.0%
Negative1.8%
Written reviews362 reviews
Positive91.4%
Neutral3.6%
Negative5.0%

The Unstoppables 2

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Kitty Q

Reported bugs

2 issues
  • Crashes on startup for some users
  • Difficulty choosing between live or dead cat ending

Requested features

3 requests
  • More levels or chapters
  • Ability to reset the game
  • Multilingual support

The Unstoppables 2

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Kitty Q

No in-app purchases

None

The Unstoppables 2

No in-app purchases

Questions

Is Kitty Q free?
Kitty Q is free to download, with no in-app purchases.
Is The Unstoppables 2 free?
The Unstoppables 2 is free to download, with no in-app purchases.
Which has better reviews, Kitty Q or The Unstoppables 2?
Kitty Q is rated higher. Kitty Q averages 4.9 out of 5 from 400 ratings, while The Unstoppables 2 averages 2.7 from 3 ratings.
Do Kitty Q or The Unstoppables 2 have ads?
Neither Kitty Q nor The Unstoppables 2 shows ads.
Which is updated more often, Kitty Q or The Unstoppables 2?
Kitty Q ships an update every 13 months, and The Unstoppables 2 every 4 months. Most recently, Kitty Q was updated on October 30, 2026 and The Unstoppables 2 on October 24, 2026.

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