# QF Alumni vs SDD Official

The clearest difference is update cadence: SDD Official at every 4 days against QF Alumni's every 3 months. SDD Official also leads on iOS requirement (11.0 vs 13.4). 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.

QF Alumni ships an update every 3 months, SDD Official every 4 days. Both last shipped on October 7, 2026.

## The numbers

| Metric | QF Alumni | SDD Official |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 66 MB | 15 MB |
| Requires iOS | 13.4 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Qatar Foundation](https://appshunter.io/developer/443810694) | [Jincheol Seo](https://appshunter.io/developer/590612971) |

## What reviewers say

### QF Alumni

[App page](https://appshunter.io/ios/app/qf-alumni/id1606858284)

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

**In-app purchases:** none


### SDD Official

[App page](https://appshunter.io/ios/app/sdd-official/id6793012865)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QF Alumni free?

QF Alumni is free to download, with no in-app purchases.

### Is SDD Official free?

SDD Official is free to download, with no in-app purchases.

### Do QF Alumni or SDD Official have ads?

Neither QF Alumni nor SDD Official shows ads.

### Which is updated more often, QF Alumni or SDD Official?

QF Alumni ships an update every 3 months, and SDD Official every 4 days. Most recently, QF Alumni was updated on October 7, 2026 and SDD Official on October 7, 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.*