Comparison

Can Knockdown 3 vs Dr. Rocket

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

Head to head
About

Can Knockdown 3

Test your aim and puzzle-solving skills in this physics-based carnival game. Knock down cans across multiple challenging levels with stunning 3D graphics and realistic physics. Unlock new levels and discover hidden secrets.

Highlights
  • Multiple challenging 3D levels
  • Easy to tricky puzzles
  • Realistic physics engine
  • Gorgeous 3D graphics
  • Unlockable levels and secrets
  • Achievements and badges
Features
Read full description

Be accurate! Be smart! Be quick! Challenge your aim, hone your precision, and push your puzzle-solving skills to the next level in this insanely addictive game. This installment takes the critically acclaimed Can Knockdown series to all new heights- the physics-based carnival gameplay you know and love- and adds unique puzzles, adrenaline-charged challenges, and even more explosive action! A SMASH hit series! Tens of millions of downloads and still going strong! This latest edition has even more awesome features: • Multiple challenging levels in beautiful 3D locations • Puzzles from Easy to Tricky… can you knock them ALL down? • Show off your skills and challenge your friends! • Multiple achievements and badges… collect them ALL! • Gorgeous 3D graphics • Amazing realism, perfectly-tuned physics engine, easy-to-use controls • Gameplay boosts like multipliers, bonuses, and so much more! • Unlock new levels, open new locations, and discover hidden secrets! Ready… set… THROW! Fans of Can Knockdown will LOVE this fresh new gaming experience… tell your friends, rate our game, and be sure to follow us on facebook and twitter!

About

Dr. Rocket

Pilot your rocket through space by tapping the screen to steer. Test your reflexes and see how far you can travel in this simple, arcade-style game.

Highlights
  • Simple touch controls
  • Rocket flight simulation
  • Endless space journey
  • High score chasing
Features
Read full description

Fly your rocket to space! Touch left side to turn left. Touch right side to turn right. How far can you go? SUD Inc.

Screenshots

Can Knockdown 34 screens
Dr. Rocket3 screens

Verdict

The call

The clearest difference is in-app purchases: Dr. Rocket at none against Can Knockdown 3's 1. Dr. Rocket also leads on iOS requirement (12.0 vs 15.0). Can Knockdown 3's advantage is ratings volume (2.1K vs 54) and update cadence (every 2 months vs every 6 months). On price, rating, review sentiment and ads 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. Can Knockdown 3 sells 1 one-off in-app purchase. Dr. Rocket asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Can Knockdown 3 holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Can Knockdown 3 has 2.1K ratings behind it against 54, so its average is the more settled of the two. Written reviews point the same way: 76% of Can Knockdown 3's written reviews are positive against 72% of Dr. Rocket's.

UpkeepUpdate frequency

Can Knockdown 3 ships an update every 2 months, Dr. Rocket every 6 months. The most recent releases landed on September 30, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 5 level
Can Knockdown 3 versus Dr. Rocket: the parameters behind the verdict, then further details
ParameterCan Knockdown 3Dr. Rocket
PriceFreeFree
Rating4.6 (2.1K ratings) — better4.4 (54 ratings)
Positive reviews75.7% of reviews — better72.2% of reviews
Number of ratings2.1K — better54
Update frequencyEvery 2 months — betterEvery 6 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size186 MB8 MB
Age rating4+4+
DeveloperInfinite Dreams Inc.SUD Inc.

Customer experience

Can Knockdown 3

All ratings2,120 ratings
Positive90.7%
Neutral4.4%
Negative4.9%
Written reviews218 reviews
Positive75.7%
Neutral6.0%
Negative18.3%

Dr. Rocket

All ratings54 ratings
Positive85.2%
Neutral7.4%
Negative7.4%
Written reviews36 reviews
Positive72.2%
Neutral11.1%
Negative16.7%

Bugs and requests

Can Knockdown 3

Reported bugs

5 issues
  • Game crashes on launch for some devices
  • Levels freeze or become unresponsive
  • Purchased upgrades not restoring properly
  • Ads playing with sound even in silent mode
  • Compatibility issues with newer devices

Requested features

5 requests
  • More levels and content updates
  • Option to disable ads without paying
  • Improved performance and stability
  • Customizable controls and settings
  • Ability to save progress and continue later

Dr. Rocket

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Can Knockdown 3

One-time1
  • Remove ads!$1.99
None

Dr. Rocket

No in-app purchases

Questions

Is Can Knockdown 3 free?
Can Knockdown 3 is free to download, with in-app purchases available.
Is Dr. Rocket free?
Dr. Rocket is free to download, with no in-app purchases.
Which has better reviews, Can Knockdown 3 or Dr. Rocket?
Can Knockdown 3 is rated higher. Can Knockdown 3 averages 4.6 out of 5 from 2.1K ratings, while Dr. Rocket averages 4.4 from 54 ratings.
Do Can Knockdown 3 or Dr. Rocket have ads?
Both Can Knockdown 3 and Dr. Rocket show ads.
Which is updated more often, Can Knockdown 3 or Dr. Rocket?
Can Knockdown 3 ships an update every 2 months, and Dr. Rocket every 6 months. Most recently, Can Knockdown 3 was updated on September 30, 2026 and Dr. Rocket on September 24, 2026.

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