# Block Door Study vs Deck Flow's

The clearest difference is device support: Deck Flow's at 3 against Block Door Study's 1. Deck Flow's also leads on iOS requirement (15.0 vs 17.0). On price, 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.

## The numbers

| Metric | Block Door Study | Deck Flow's |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | — |
| Size | 4 MB | 22 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Ryan Sullivan](https://appshunter.io/developer/6787938037) | [John Collins](https://appshunter.io/developer/6797035170) |

## What reviewers say

### Block Door Study

[App page](https://appshunter.io/ios/app/block-door-study/id6787938035)

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

**In-app purchases:** none


### Deck Flow's

[App page](https://appshunter.io/ios/app/deck-flows/id6810633514)

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

**In-app purchases:** none


## Frequently asked questions

### Is Block Door Study free?

Block Door Study is free to download, with no in-app purchases.

### Is Deck Flow's free?

Deck Flow's is free to download, with no in-app purchases.

### Do Block Door Study or Deck Flow's have ads?

Both Block Door Study and Deck Flow's show ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*