# Heptrix 3D vs Drop drop. Stack puzzle

The clearest difference is iOS requirement: Drop drop. Stack puzzle at 8.1 against Heptrix 3D's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Heptrix 3D ships an update every 19 months, Drop drop. Stack puzzle every 31 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Heptrix 3D | Drop drop. Stack puzzle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 19 months** | Every 31 months |
| Size | 74 MB | 66 MB |
| Requires iOS | 13.0 | **8.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jose Varela](https://appshunter.io/developer/336500035) | [Ruslan Goncharenko](https://appshunter.io/developer/934710362) |

## What reviewers say

### Heptrix 3D

[App page](https://appshunter.io/ios/app/heptrix-3d-ads/id919644015)

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

**In-app purchases:** none


### Drop drop. Stack puzzle

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Heptrix 3D free?

Heptrix 3D is free to download, with no in-app purchases.

### Is Drop drop. Stack puzzle free?

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

### Do Heptrix 3D or Drop drop. Stack puzzle have ads?

Both Heptrix 3D and Drop drop. Stack puzzle show ads.

### Which is updated more often, Heptrix 3D or Drop drop. Stack puzzle?

Heptrix 3D ships an update every 19 months, and Drop drop. Stack puzzle every 31 months. Most recently, Heptrix 3D was updated on October 24, 2026 and Drop drop. Stack puzzle on October 26, 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.*