Boo! vs Kitty Q
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Boo!
Dip pumpkins in paint and use attributes to mask parts to solve Halloween-themed puzzles. The difficulty increases as you progress through 42 levels, with a daily puzzle mode unlocked upon completion.
- Pumpkin painting puzzles
- Masking attributes
- Increasing difficulty
- 42 Halloween levels
- Daily puzzle mode
- Unlockable content
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'Boo!' is a spooky puzzle game for you! To solve the puzzles you have to dip the pumpkin in the different paints and wear attributes to mask certain parts of the pumpkin. The puzzles start easy but it gets more difficult! Can you make the correct pumpkin in 42 Halloween themed levels? Complete all the levels to unlock the brand new daily puzzle mode. Happy Halloween, @BartBonte
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.
- Quantum physics puzzles
- Explore quantum world rules
- Learn scientific facts
- Character guidance
- Unique cat adventure
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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.
Screenshots
Verdict
The clearest difference is in-app purchases: Kitty Q at none against Boo!'s 1. Kitty Q also leads on ads (none vs shown). Boo!'s advantage is update cadence (every 5 months vs every 13 months). On price, rating, review sentiment and ratings volume 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
Both are free to download. Boo! sells 1 one-off in-app purchase. Kitty Q asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Boo! against 4.9 for Kitty Q. Both are backed by a comparable volume of ratings — 201 and 400 respectively. Written reviews are what separate them: 96% of Boo!'s written reviews are positive against 91% of Kitty Q's.
Boo! ships an update every 5 months, Kitty Q every 13 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Boo! | Kitty Q |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (201 ratings) | 4.9 (400 ratings) — better |
| Positive reviews | 96.1% of reviews — better | 91.4% of reviews |
| Number of ratings | 201 | 400 — better |
| Update frequency | Every 5 months — better | Every 13 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 1.3 GB |
| Age rating | 9+ | 9+ |
| Developer | Bart BONTE | Philipp Stollenmayer |
Customer experience
Boo!
Kitty Q
User reviews
Boo!
From 201 App Store ratingsWhat we love
- 🧩 Simple yet challenging puzzle mechanics
- 🎨 Cute and appealing art style
- 🎵 Great music and audio design
- 👍 User-friendly interface
- 📱 Minimal and non-intrusive ads
Room to improve
- ⏱️ Game is too short
- 🎨 Color contrast issues on low brightness
- 📺 Some ads are lengthy
- 🔄 Game resets when app is closed
- ⚙️ Occasional freezing/crashing issues
Kitty Q
From 400 App Store ratingsWhat we love
- 🐱 Cute cat character
- 💡 Interesting quantum physics concepts
- 👍 Engaging puzzles
- 🚀 No ads or in-app purchases
- 🎨 Lovely art style and design
Room to improve
- 🕰️ Game is too short
- 🤔 Some puzzles can be challenging
- 📚 Lack of language options (only English)
Bugs and requests
Boo!
Reported bugs
5 issues- Level 24 progression bug - puzzle completes but won't advance
- App freezes at logo on iOS 14.7.1
- Game occasionally freezes after level completion
- Purchase restoration not working properly
- Color differentiation issue between white and neon yellow
Requested features
13 requests- More levels (most frequently requested)
- Increased difficulty options
- Endless or infinite mode
- Speed run mode with timing
- Hardcore mode
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- Additional pumpkin variations and cosmetics
- New accessory items (cloaks, hats, etc.)
- Dark theme option
- Colorblind mode with alternative color palettes
- Randomized level generation
- Landscape orientation support
- Persistent game state when switching apps
- Notification system for daily puzzles
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
In-app purchases
Boo!
- no ads$2.49
Kitty Q
No in-app purchases








