# Drop drop. Stack puzzle vs Block Puzzle in Space

The clearest difference is in-app purchases: Drop drop. Stack puzzle at none against Block Puzzle in Space's 3. Drop drop. Stack puzzle also leads on iOS requirement (8.1 vs 15.0). Block Puzzle in Space's advantage is update cadence (every 9 days vs every 31 months). On price, ads and device support there is nothing between them.

Both are free to download. Block Puzzle in Space sells 3 one-off in-app purchases. Drop drop. Stack puzzle asks for nothing beyond the download.

Drop drop. Stack puzzle ships an update every 31 months, Block Puzzle in Space every 9 days. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Drop drop. Stack puzzle | Block Puzzle in Space |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 31 months | **Every 9 days** |
| Size | 66 MB | 200 MB |
| Requires iOS | **8.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ruslan Goncharenko](https://appshunter.io/developer/934710362) | [海宁 徐](https://appshunter.io/developer/782982060) |

## What reviewers say

### Drop drop. Stack puzzle

[App page](https://appshunter.io/ios/app/drop-drop-stack-puzzle/id1206095182)

**Features:** macOS Compatibility

**In-app purchases:** none


### Block Puzzle in Space

[App page](https://appshunter.io/ios/app/block-puzzle-in-space/id6478807534)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Times of Rotation | $0.99 | one-time |
| 25 Times of Rotation | $1.99 | one-time |
| 50 Times of Rotation | $2.99 | one-time |


## Frequently asked questions

### Is Drop drop. Stack puzzle free?

Drop drop. Stack puzzle is free to download, with no in-app purchases.

### Is Block Puzzle in Space free?

Block Puzzle in Space is free to download, with in-app purchases available.

### Do Drop drop. Stack puzzle or Block Puzzle in Space have ads?

Both Drop drop. Stack puzzle and Block Puzzle in Space show ads.

### Which is updated more often, Drop drop. Stack puzzle or Block Puzzle in Space?

Drop drop. Stack puzzle ships an update every 31 months, and Block Puzzle in Space every 9 days. Most recently, Drop drop. Stack puzzle was updated on September 27, 2026 and Block Puzzle in Space on October 7, 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.*