# Knock Out vs Stack Smash

The clearest difference is ads: Knock Out at none against Stack Smash's shown. Stack Smash's advantage is review sentiment (75% vs 50%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Knock Out sells 14 one-off in-app purchases and Stack Smash sells 12 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Stack Smash holds the better App Store score, 4.9 against 4.8. Both are backed by a comparable volume of ratings — 36K and 45K respectively. Written reviews point the same way: 50% of Knock Out's written reviews are positive against 75% of Stack Smash's.

Knock Out ships an update every 3 days, Stack Smash every 6 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | Knock Out | Stack Smash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (36K ratings)](https://appshunter.io/ios/app/knock-out-physics-puzzle/id6782096197/reviews) | **[4.9 (45K ratings)](https://appshunter.io/ios/app/stack-smash-3d-puzzle-game/id6784602967/reviews)** |
| Number of ratings | 36K | **45K** |
| Positive reviews | 49.9% of reviews | **74.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 6 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#103** | #127 |
| Size | 242 MB | 375 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Combo Games](https://appshunter.io/developer/1641699177) | [Tripledot Studios](https://appshunter.io/developer/1191319103) |

## What reviewers say

### Knock Out

[App page](https://appshunter.io/ios/app/knock-out-physics-puzzle/id6782096197)

**Currently charting:** #103 Top Grossing · Puzzle, #113 Top Grossing · Casual, #115 Top Free · Casual, #119 Top Free · Puzzle (US App Store)

Blast colorful blocks and topple clever structures in this satisfying physics-driven puzzle game. Fire matching blocks to create explosive chain reactions and clear every piece to complete hundreds of handcrafted levels. Enjoy addictive, rewarding gameplay that's easy to learn but challenging to master.

**Highlights:** Addictive shoot-and-clear puzzle gameplay, Satisfying block destruction, Hundreds of handcrafted levels, Unique structures and obstacles, Smooth controls and precision shots, Colorful 3D visuals, Offline play

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mini Pack | $0.99 | one-time |
| Mini Pack | $1.99 | one-time |
| Mini Pack | $2.99 | one-time |
| Mini Pack | $3.99 | one-time |
| Mini Pack | $4.99 | one-time |
| Mini Pack | $5.99 | one-time |
| Medium Pack | $7.99 | one-time |
| Medium Pack | $9.99 | one-time |
| Large Pack | $14.99 | one-time |
| Large Pack | $19.99 | one-time |
| Large Pack | $29.99 | one-time |
| Mega Pack | $39.99 | one-time |
| Mega Pack | $54.99 | one-time |
| Mega Pack | $99.99 | one-time |


### Stack Smash

[App page](https://appshunter.io/ios/app/stack-smash-3d-puzzle-game/id6784602967)

**Currently charting:** #127 Top Free · Casual, #128 Top Free · Puzzle (US App Store)

Launch a cannon to smash through stacks of farmyard objects in this physics-based puzzle game. Enjoy satisfying destruction and clever level designs with simple controls. Explore a cozy farm festival with cute characters and bright visuals.

**Highlights:** Aim, shoot, and smash gameplay, Satisfying physics-based destruction, Clever puzzle levels with limited shots, Colorful farm objects to smash, Cozy farm festival locations, Simple controls and rewarding precision

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Special Offer 1 | $1.99 | one-time |
| Special Offer 10 | $2.99 | one-time |
| Special Offer 11 | $4.99 | one-time |
| Special Offer 2 | $7.99 | one-time |
| Special Offer 10 | $9.99 | one-time |
| Special Offer 13 | $12.99 | one-time |
| Special Offer 8 | $14.99 | one-time |
| Special Offer 3 | $14.99 | one-time |
| Special Offer 12 | $19.99 | one-time |
| Special Offer 4 | $29.99 | one-time |
| Special Offer 5 | $49.99 | one-time |
| Special Offer 6 | $99.99 | one-time |


## Frequently asked questions

### Is Knock Out free?

Knock Out is free to download, with in-app purchases available.

### Is Stack Smash free?

Stack Smash is free to download, with in-app purchases available.

### Which has better reviews, Knock Out or Stack Smash?

Stack Smash is rated higher. Knock Out averages 4.8 out of 5 from 36K ratings, while Stack Smash averages 4.9 from 45K ratings.

### Do Knock Out or Stack Smash have ads?

Stack Smash shows ads; Knock Out does not.

### Which is updated more often, Knock Out or Stack Smash?

Knock Out ships an update every 3 days, and Stack Smash every 6 days. Most recently, Knock Out was updated on October 29, 2026 and Stack Smash on October 29, 2026.

### Which is more popular, Knock Out or Stack Smash?

Knock Out currently peaks at #103 in the App Store charts, and Stack Smash at #127. Chart position reflects recent download velocity rather than total install base.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*