# Self SDG vs Smart StudyRoom App

The clearest difference is update cadence: Smart StudyRoom App at every 5 days against Self SDG's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Self SDG ships an update every 4 months, Smart StudyRoom App every 5 days. Both last shipped on October 2, 2026.

## The numbers

| Metric | Self SDG | Smart StudyRoom App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Size | 81 MB | 96 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Rafael Montilla Castillo](https://appshunter.io/developer/1846362390) | [Panashe Matsaudza](https://appshunter.io/developer/1873503730) |

## What reviewers say

### Self SDG

[App page](https://appshunter.io/ios/app/self-sdg/id6754036312)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart StudyRoom App

[App page](https://appshunter.io/ios/app/smart-studyroom-app/id6758566481)

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

**In-app purchases:** none


## Frequently asked questions

### Is Self SDG free?

Self SDG is free to download, with no in-app purchases.

### Is Smart StudyRoom App free?

Smart StudyRoom App is free to download, with no in-app purchases.

### Do Self SDG or Smart StudyRoom App have ads?

Neither Self SDG nor Smart StudyRoom App shows ads.

### Which is updated more often, Self SDG or Smart StudyRoom App?

Self SDG ships an update every 4 months, and Smart StudyRoom App every 5 days. Most recently, Self SDG was updated on October 2, 2026 and Smart StudyRoom App on October 2, 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.*