# BlockKnox Zen vs Nut Stack

The clearest difference is ads: BlockKnox Zen at none against Nut Stack's shown. BlockKnox Zen also leads on update cadence (every 3 days vs every 9 days). Nut Stack's advantage is iOS requirement (13.0 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. BlockKnox Zen sells 6 one-off in-app purchases and Nut Stack sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

BlockKnox Zen ships an update every 3 days, Nut Stack every 9 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | BlockKnox Zen | Nut Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4.4K ratings)](https://appshunter.io/ios/app/nut-stack-sort-puzzle/id6791946629/reviews)** |
| Number of ratings | — | **4.4K** |
| Positive reviews | — | 67.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 83 MB | 354 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Guy Miller](https://appshunter.io/developer/1865478036) | [Nova Games Technology Limited](https://appshunter.io/developer/6788663516) |

## What reviewers say

### BlockKnox Zen

[App page](https://appshunter.io/ios/app/blockknox-zen/id6771356898)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,000 Coins | $0.99 | one-time |
| 5 Zen Keys | $0.99 | one-time |
| 3,000 Coins | $2.99 | one-time |
| 25 Zen Keys | $2.99 | one-time |
| 6,000 Coins | $4.99 | one-time |
| 50 Zen Keys | $4.99 | one-time |


### Nut Stack

[App page](https://appshunter.io/ios/app/nut-stack-sort-puzzle/id6791946629)

A relaxing puzzle game where you sort colorful nuts onto screws. Arrange nuts by color to create neat stacks. Enjoy a calm, satisfying experience with no timers or pressure.

**Highlights:** Sort, stack, and solve nut puzzles, Tactile sorting mechanics, Play at your own pace, no timers, Progressively challenging levels, Satisfying visual and auditory feedback

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $1.99 | one-time |
| Gold 1 | $1.99 | one-time |
| Gold 2 | $4.99 | one-time |
| Limited Pack | $5.99 | one-time |
| Remove ADS | $5.99 | one-time |
| Big Bundle | $6.99 | one-time |
| Gold 3 | $9.99 | one-time |
| Great Bundle | $12.99 | one-time |
| Gold 4 | $19.99 | one-time |
| Ultra Bundle | $24.99 | one-time |


## Frequently asked questions

### Is BlockKnox Zen free?

BlockKnox Zen is free to download, with in-app purchases available.

### Is Nut Stack free?

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

### Do BlockKnox Zen or Nut Stack have ads?

Nut Stack shows ads; BlockKnox Zen does not.

### Which is updated more often, BlockKnox Zen or Nut Stack?

BlockKnox Zen ships an update every 3 days, and Nut Stack every 9 days. Most recently, BlockKnox Zen was updated on October 31, 2026 and Nut Stack on November 5, 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.*