Comparison

Knock It Down! vs Whack Stack!

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

Head to head
About

Knock It Down!

A physics-based shooting game where you use a cannon to topple stacks of objects. Aim carefully to trigger chain reactions and clear levels with limited ammo. Offers hundreds of progressively challenging stages.

Highlights
  • One-touch aim and shoot
  • Realistic physics destruction
  • Multiple object types
  • Limited ball count per level
  • Hundreds of challenging levels
Features
Read full description

Knock It Down is a physics-based shooting game where you fire balls from a cannon to knock stacks of cans, crates, and objects off their platforms before your ammo runs out. How it works: Aim your cannon, fire, and use physics to your advantage, hit the right block to trigger chain reactions and clear the platform in as few shots as possible. Key Features: - Simple one-touch aim and shoot mechanic - Realistic physics destruction — every shot feels different - Multiple object types including cans, crates, and reinforced blocks - Limited ball count per level adds strategic depth - Progressively challenging formations across hundreds of levels Ideal for players who enjoy physics shooters, ball launcher games, and satisfying destruction gameplay.

About

Whack Stack!

A physics-based puzzle game where players aim a cannon to strategically knock down stacked structures. Master each level by finding weak points and triggering satisfying chain reactions for quick, engaging gameplay.

Highlights
  • Simple cannon aiming and shooting
  • Satisfying physics-based destruction
  • Strategic puzzle-solving
  • Chain reactions and falling blocks
  • Varied structures to demolish
  • Short, satisfying levels
Features
Read full description

Welcome to Whack Stack! A colorful 3D physics puzzle game where stacked materials, tall towers and unstable buildings are waiting to be knocked down. Aim your cannon, fire the shot, and watch the structure collapse piece by piece. Smash every stack, clear the site, and finish each level with one perfect cannonball. A SITE FULL OF STACKS TO SMASH Stone blocks, wooden boards, heavy crates, steel barrels and fragile parts are stacked high and ready to fall. Every scene is a new build site: stone walls, steel frames and heavy material stacks, all built to test your aim. Load the cannon, pick your angle, and blast the whole thing down in one satisfying wave of destruction. SIMPLE MECHANIC, CLEVER PHYSICS PUZZLE The mechanic is simple: aim, shoot, smash. But every stack is a real physics puzzle. Some stone blocks hold the whole structure together. Some crates and barrels only shift. One fragile piece can break, trigger a chain reaction and drop the whole stack. Shoot without aiming and the structure just shakes. Find the weak point, control the angle and the power, fire the perfect shot and let the destruction do the rest. WHY YOU'LL LOVE WHACK STACK! • Simple cannon gameplay: aim, shoot and smash the stack • Satisfying 3D physics destruction, with every block, board and piece falling in real time • Colorful destruction scenes: stacked towers, stone walls, bridges and tricky structures • Smash stone blocks, wooden boards, crates, barrels and fragile parts • Destructive chain reactions that knock a whole building down in one blast • Clever puzzle challenge: read the scene, find the weak point, fire the perfect cannonball • Fun, chaotic cannon physics with new levels and rewarding destruction • Short, satisfying levels, perfect for a quick smash session • Easy to play and learn, tricky to master EVERY SHOT COUNTS Aiming is a skill. Control the angle, control the power, trigger the reaction. Hit one fragile block and the barrel stack pops. Knock one board down and the crates follow. Clear every object, break every obstacle, and the stage is yours. Each perfect shot rewards you with new cannons, new stone structures and bigger destruction. READY, AIM, SMASH! The cannon is ready. The stack is standing tall. Blocks are stacked, balanced and waiting to fall. Aim the cannon, hit the weak point, smash the structure and clear the stage. Can you smash every stack with the perfect cannon shot? Download Whack Stack! and start your first destruction puzzle today.

Screenshots

Knock It Down!4 screens
Whack Stack!4 screens

Verdict

The call

Knock It Down! and Whack Stack! both sit at 4.7 stars, but that hides the real split: 86% of Whack Stack!'s written reviews are positive against 57% of Knock It Down!'s. Knock It Down!'s advantage is update cadence (weekly vs every 3 weeks) and monetization model (ad-supported vs free with in-app purchases). On price, rating, ratings volume 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. Knock It Down! sells 7 one-off in-app purchases and Whack Stack! sells 10 one-off in-app purchases. 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 Knock It Down! against 4.8 for Whack Stack!. Both are backed by a comparable volume of ratings — 812 and 891 respectively. Written reviews are what separate them: 57% of Knock It Down!'s written reviews are positive against 86% of Whack Stack!'s.

UpkeepUpdate frequency

Knock It Down! ships an update weekly, Whack Stack! every 3 weeks. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
Knock It Down! versus Whack Stack!: the parameters behind the verdict, then further details
ParameterKnock It Down!Whack Stack!
PriceFreeFree
Rating4.7 (812 ratings)4.8 (891 ratings) — better
Positive reviews57.1% of reviews86.2% of reviews — better
Number of ratings812891 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size212 MB333 MB
Age rating4+4+
DeveloperZehra KocSupercent, Inc.

Customer experience

Knock It Down!

All ratings812 ratings
Positive93.0%
Neutral4.6%
Negative2.5%
Written reviews14 reviews
Positive57.1%
Neutral7.1%
Negative35.7%

Whack Stack!

All ratings891 ratings
Positive95.8%
Neutral2.1%
Negative2.0%
Written reviews29 reviews
Positive86.2%
Neutral0.0%
Negative13.8%

In-app purchases

7 purchases

Knock It Down!

One-time7
  • Mini Coin Package$1.99
  • Small Coin Package$7.99
  • No Ads$9.99
Show 4 more
  • Medium Coin Package$14.99
  • Big Coin Package$29.99
  • Super Coin Package$54.99
  • Mega Coin Package$99.99
10 purchases

Whack Stack!

One-time10
  • staterdeal_0.99$0.99
  • moneypack1_1.99$1.99
  • valuepack_1.99$1.99
Show 7 more
  • stepup1_1.99$1.99
  • stepup2_4.99$4.99
  • superdeal_7.99$7.99
  • moneypack2_7.99$7.99
  • noads_9.99$9.99
  • megapack_24.99$24.99
  • moneypack6_99.99$99.99

Questions

Is Knock It Down! free?
Knock It Down! is free to download, with in-app purchases available.
Is Whack Stack! free?
Whack Stack! is free to download, with in-app purchases available.
Which has better reviews, Knock It Down! or Whack Stack!?
Whack Stack! is rated higher. Knock It Down! averages 4.7 out of 5 from 812 ratings, while Whack Stack! averages 4.8 from 891 ratings.
Do Knock It Down! or Whack Stack! have ads?
Both Knock It Down! and Whack Stack! show ads.
Which is updated more often, Knock It Down! or Whack Stack!?
Knock It Down! ships an update weekly, and Whack Stack! every 3 weeks. Most recently, Knock It Down! was updated on October 14, 2026 and Whack Stack! on October 15, 2026.

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