# SkyHighStack vs Brain Dig

The clearest difference is ads: SkyHighStack at none against Brain Dig's shown. SkyHighStack also leads on update cadence (daily vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SkyHighStack ships an update daily, Brain Dig every 2 months. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SkyHighStack | Brain Dig |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (50 ratings)](https://appshunter.io/ios/app/brain-dig-digging-puzzle/id6744810089/reviews)** |
| Number of ratings | — | **50** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 months |
| Monetization | — | Ad-supported |
| Size | 5 MB | 181 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Penn Curtis](https://appshunter.io/developer/1772733523) | [BAF, Ltd.](https://appshunter.io/developer/1501471707) |

## What reviewers say

### SkyHighStack

[App page](https://appshunter.io/ios/app/skyhighstack/id6741442802)

**Features:** macOS Compatibility

**In-app purchases:** none


### Brain Dig

[App page](https://appshunter.io/ios/app/brain-dig-digging-puzzle/id6744810089)

This puzzle game challenges you to dig paths for colored balls to roll and merge with others of the same hue. It offers a relaxing yet mentally stimulating experience, perfect for quick play sessions. Success depends on strategically creating pathways for all balls to connect.

**Highlights:** Digging puzzle gameplay, Merge same-colored balls, Realistic physics simulation, Brain training challenges, Relaxing downtime activity, Addictive merge mechanics

**In-app purchases:** none


## Frequently asked questions

### Is SkyHighStack free?

SkyHighStack is free to download, with no in-app purchases.

### Is Brain Dig free?

Brain Dig is free to download, with no in-app purchases.

### Do SkyHighStack or Brain Dig have ads?

Brain Dig shows ads; SkyHighStack does not.

### Which is updated more often, SkyHighStack or Brain Dig?

SkyHighStack ships an update daily, and Brain Dig every 2 months. Most recently, SkyHighStack was updated on October 8, 2026 and Brain Dig on October 10, 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.*