# 隠スタディ vs SmartRedFilter

The clearest difference is in-app purchases: 隠スタディ at none against SmartRedFilter's 1. 隠スタディ also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. SmartRedFilter sells 1 one-off in-app purchase. 隠スタディ asks for nothing beyond the download.

## The numbers

| Metric | 隠スタディ | SmartRedFilter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Size | 23 MB | 11 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [subaru nakano](https://appshunter.io/developer/1731462205) | [Mitsuhiro Hashimoto](https://appshunter.io/developer/509482512) |

## What reviewers say

### 隠スタディ

[App page](https://appshunter.io/ios/app/id6740914306)

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartRedFilter

[App page](https://appshunter.io/ios/app/smartredfilter/id6771782559)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | one-time |


## Frequently asked questions

### Is 隠スタディ free?

隠スタディ is free to download, with no in-app purchases.

### Is SmartRedFilter free?

SmartRedFilter is free to download, with in-app purchases available.

### Do 隠スタディ or SmartRedFilter have ads?

Both 隠スタディ and SmartRedFilter show ads.

---

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