# SD Master vs URNA

The clearest difference is update cadence: URNA at every 3 weeks against SD Master's every 2 months. SD Master's advantage is iOS requirement (9.0 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.

SD Master ships an update every 2 months, URNA every 3 weeks. The most recent releases landed on September 18, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | SD Master | URNA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 28 MB | 36 MB |
| Requires iOS | **9.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Shenzhen Zhumang Information Technology Co., Ltd.](https://appshunter.io/developer/1578234346) | [IoT (Shenzhen) Sharing Technology Co., Ltd](https://appshunter.io/developer/1726546490) |

## What reviewers say

### SD Master

[App page](https://appshunter.io/ios/app/sd-master/id1491447628)

**Features:** macOS Compatibility

**In-app purchases:** none


### URNA

[App page](https://appshunter.io/ios/app/urna/id6680191364)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SD Master free?

SD Master is free to download, with no in-app purchases.

### Is URNA free?

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

### Do SD Master or URNA have ads?

Neither SD Master nor URNA shows ads.

### Which is updated more often, SD Master or URNA?

SD Master ships an update every 2 months, and URNA every 3 weeks. Most recently, SD Master was updated on September 18, 2026 and URNA on September 6, 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.*