# Streak Stack Habit Tower vs Block Door Study

Streak Stack Habit Tower and Block Door Study are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Streak Stack Habit Tower ships an update fortnightly, Block Door Study every 2 weeks. The most recent releases landed on September 6, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Streak Stack Habit Tower | Block Door Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 12 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Ronnie Poole](https://appshunter.io/developer/6780843240) | [Ryan Sullivan](https://appshunter.io/developer/6787938037) |

## What reviewers say

### Streak Stack Habit Tower

[App page](https://appshunter.io/ios/app/streak-stack-habit-tower/id6780843237)

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

**In-app purchases:** none


### Block Door Study

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Streak Stack Habit Tower free?

Streak Stack Habit Tower is free to download, with no in-app purchases.

### Is Block Door Study free?

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

### Do Streak Stack Habit Tower or Block Door Study have ads?

Both Streak Stack Habit Tower and Block Door Study show ads.

### Which is updated more often, Streak Stack Habit Tower or Block Door Study?

Streak Stack Habit Tower ships an update fortnightly, and Block Door Study every 2 weeks. Most recently, Streak Stack Habit Tower was updated on September 6, 2026 and Block Door Study on September 17, 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.*