# Reflex Circle vs Stacker Blocks

The clearest difference is ads: Reflex Circle at none against Stacker Blocks's shown. Stacker Blocks's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.6). On price, update cadence 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.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Reflex Circle | Stacker Blocks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | Every 2 days |
| Size | 13 MB | 20 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Reena Bouk](https://appshunter.io/developer/1865602850) | [Sercan Gulcicek](https://appshunter.io/developer/1497006904) |

## What reviewers say

### Reflex Circle

[App page](https://appshunter.io/ios/app/reflex-circle/id6760378564)

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

**In-app purchases:** none


### Stacker Blocks

[App page](https://appshunter.io/ios/app/stacker-blocks/id6804222151)

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

**In-app purchases:** none


## Frequently asked questions

### Is Reflex Circle free?

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

### Is Stacker Blocks free?

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

### Do Reflex Circle or Stacker Blocks have ads?

Stacker Blocks shows ads; Reflex Circle does not.

### Which is updated more often, Reflex Circle or Stacker Blocks?

Reflex Circle ships an update every 2 days, and Stacker Blocks every 2 days. Most recently, Reflex Circle was updated on October 7, 2026 and Stacker Blocks on October 9, 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.*