Comparison

Heart Box vs Crazy Contraptions

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

Head to head
About

Heart Box

Guide a robot through challenging puzzle rooms by utilizing realistic physics and a variety of objects. Solve over 180 levels across four game modes, with the ability to create and share your own levels.

Highlights
  • Over 180 puzzle levels
  • Four distinct game modes
  • Level editor and QR code sharing
  • Online community levels database
  • Realistic physics engine
  • Robot customization with skins
Features
Read full description

Professor Rat created Robby but gave him a weak battery, which is why our hero has to constantly recharge and participate in crazy experiments. Take the robot through all the experimental puzzle rooms of Professor Rat to release him from the charger! Features: ▶ Over 180 levels for your brain! ▶ 4 funny game modes ▶ 20 physical objects ▶ Level Editor & Collection of QR levels ▶ Online database "Community Levels" ▶ Tons of skins for robot! ▶ Realistic physics ▶ High-quality graphics ▶ A lot of cartoons! ▶ Game achievements & leaderboards Find new levels in our community: Facebook: https://www.facebook.com/radbrothers Twitter: https://twitter.com/Rad_Brothers Instagram: https://www.instagram.com/rad_brothers VK: https://vk.com/radbrothersid YouTube channel: https://www.youtube.com/user/RadBrothersID Our website: https://radbrothers.com

About

Crazy Contraptions

Design and build intricate machines to solve physics-based puzzles. Experiment with various interactive objects to create chain reactions and achieve goals in a sandbox environment that rewards creativity and logic.

Highlights
  • Hundreds of physics puzzles
  • Build creative contraptions
  • Trigger chain reactions
  • Experiment freely
  • Relaxed, non-timed gameplay
  • Satisfying solutions
Features
Read full description

Welcome to Crazy Contraptions! Turn simple objects into brilliant, chaotic solutions. In Crazy Contraptions, every level is a fun physics puzzle game where creativity matters just as much as logic. Build wild machines, connect interactive objects, and trigger satisfying chain reactions to reach the goal. Drop, launch, bounce, and experiment your way through each challenge. Try different ideas, tweak your design, and discover what works. Sometimes the simplest setup wins. Sometimes the most ridiculous contraption is exactly right. A Physics Puzzle Game That Rewards Creativity Inspired by classic Rube Goldberg–style gameplay, Crazy Contraptions is all about thinking differently. Combine objects, test your ideas, and watch your physics-based puzzle solutions unfold in real time. Every puzzle is a small sandbox where logic meets imagination. Features: - Hundreds of fun and challenging physics puzzles - Build creative contraptions using simple parts - Trigger chain reactions with timing and precision - Many levels, from easy to quite tricky - Experiment freely and have fun - Relaxed, non-timed gameplay - Easy to learn, satisfying to master Solve It Your Way Try something simple. Try something clever. Or try something completely wild. Break it. Rebuild it. Improve it. Watch as everything clicks into place and your contraption finally works. Perfect For: - Fans of physics puzzle games and creative puzzle solving - Players who enjoy brain teasers and logic challenges - Creative thinkers who like experimenting - Anyone who loves chain reactions and satisfying solutions Play Anytime Whether you have a few minutes or want to dive in for hours, Crazy Contraptions is perfect for quick sessions or deep problem-solving. Think. Build. Break it. Fix it. When everything finally works... it’s beautiful chaos.

Screenshots

Heart Box4 screens
Crazy Contraptions4 screens

Verdict

The call

The clearest difference is update cadence: Crazy Contraptions at fortnightly against Heart Box's every 2 months. Crazy Contraptions also leads on review sentiment (100% vs 88%). Heart Box's advantage is ratings volume (216 vs 17) and iOS requirement (13.0 vs 15.0). On price, rating, ads and in-app purchases 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. Heart Box sells 13 one-off in-app purchases and Crazy Contraptions sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Heart Box against 4.7 for Crazy Contraptions. That said, the two scores are not equally well evidenced: Heart Box has 216 ratings behind it against 17, so its average is the more settled of the two. Written reviews are what separate them: 88% of Heart Box's written reviews are positive against 100% of Crazy Contraptions's.

UpkeepUpdate frequency

Heart Box ships an update every 2 months, Crazy Contraptions fortnightly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Heart Box versus Crazy Contraptions: the parameters behind the verdict, then further details
ParameterHeart BoxCrazy Contraptions
PriceFreeFree
Rating4.7 (216 ratings)4.7 (17 ratings) — better
Positive reviews87.5% of reviews100.0% of reviews — better
Number of ratings216 — better17
Update frequencyEvery 2 monthsFortnightly — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size108 MB382 MB
Age rating4+4+
DeveloperKonstantin RadchenkoDave Shworan

Customer experience

Heart Box

All ratings215 ratings
Positive94.0%
Neutral2.8%
Negative3.3%
Written reviews40 reviews
Positive87.5%
Neutral7.5%
Negative5.0%

Crazy Contraptions

All ratings17 ratings
Positive94.1%
Neutral5.9%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

13 purchases

Heart Box

One-time13
  • 1000 Coins$0.49
  • 5000 Coins$0.99
  • 10000 Coins$1.49
Show 10 more
  • 10000 Coins$2.99
  • All Purple Skins$3.99
  • All Blue Skins$3.99
  • Remove ads$4.99
  • Open all levels & remove ads$6.99
  • All Yellow Skins$6.99
  • 30000 Coins$6.99
  • VIP Gold Skin$7.99
  • VIP Brilliant Skin$7.99
  • 50000 Coins$9.99
1 purchases

Crazy Contraptions

One-time1
  • Remove Ads$2.99

Questions

Is Heart Box free?
Heart Box is free to download, with in-app purchases available.
Is Crazy Contraptions free?
Crazy Contraptions is free to download, with in-app purchases available.
Which has better reviews, Heart Box or Crazy Contraptions?
Crazy Contraptions is rated higher. Heart Box averages 4.7 out of 5 from 216 ratings, while Crazy Contraptions averages 4.7 from 17 ratings.
Do Heart Box or Crazy Contraptions have ads?
Both Heart Box and Crazy Contraptions show ads.
Which is updated more often, Heart Box or Crazy Contraptions?
Heart Box ships an update every 2 months, and Crazy Contraptions fortnightly. Most recently, Heart Box was updated on October 26, 2026 and Crazy Contraptions on October 24, 2026.

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