# Number Run vs Sky Stackers

The clearest difference is review sentiment: Sky Stackers at 100% against Number Run's 50%. Sky Stackers also leads on rating (5.0 vs 3.7) and ads (none vs shown). Number Run's advantage is ratings volume (80 vs 4) and iOS requirement (12.0 vs 17.0). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Number Run sells 1 one-off in-app purchase and Sky Stackers sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sky Stackers holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Number Run has 80 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 50% of Number Run's written reviews are positive against 100% of Sky Stackers's.

Number Run ships an update every 6 weeks, Sky Stackers daily. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Number Run | Sky Stackers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (80 ratings)](https://appshunter.io/ios/app/number-run-merge-3d-math/id1661752821/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sky-stackers/id6764716002/reviews)** |
| Number of ratings | **80** | 4 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 280 MB | 8 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Negaxy., JSC](https://appshunter.io/developer/1599205601) | [Zackery Allen](https://appshunter.io/developer/1895890813) |

## What reviewers say

### Number Run

[App page](https://appshunter.io/ios/app/number-run-merge-3d-math/id1661752821)

Embark on a thrilling number-collecting adventure where you run, merge, and battle with unique characters. Expand your collection of funny numbers and build a powerful army to overcome obstacles and enemies in a vibrant 3D world.

**Highlights:** Collect and merge numbers, Unlock new characters, Battle enemies, Beautiful 3D graphics, Offline gameplay, ASMR sound effects

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove ads | $2.99 | one-time |


### Sky Stackers

[App page](https://appshunter.io/ios/app/sky-stackers/id6764716002)

A fast-paced arcade game where players precisely drop blocks to build a tower as high as possible. The challenge increases with height, offering endless score chasing and quick, satisfying stacking sessions.

**Highlights:** One-touch gameplay, Endless score chasing, Satisfying stacking mechanics, Rewarded continues, Quick play sessions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Upgrade | $0.99 | one-time |


## Frequently asked questions

### Is Number Run free?

Number Run is free to download, with in-app purchases available.

### Is Sky Stackers free?

Sky Stackers is free to download, with in-app purchases available.

### Which has better reviews, Number Run or Sky Stackers?

Sky Stackers is rated higher. Number Run averages 3.7 out of 5 from 80 ratings, while Sky Stackers averages 5.0 from 4 ratings.

### Do Number Run or Sky Stackers have ads?

Number Run shows ads; Sky Stackers does not.

### Which is updated more often, Number Run or Sky Stackers?

Number Run ships an update every 6 weeks, and Sky Stackers daily. Most recently, Number Run was updated on November 7, 2026 and Sky Stackers on October 31, 2026.

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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.*