# NDSK520A vs A500/A600S DSP

The clearest difference is device support: A500/A600S DSP at 2 against NDSK520A's —. A500/A600S DSP also leads on iOS requirement (12.0 vs 14.0). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | NDSK520A | A500/A600S DSP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 11 days |
| Size | 3 MB | 7 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Guangzhou Aidan Blessindo Electronic Co.,Ltd.](https://appshunter.io/developer/1413008258) | [Guangzhou Coolpower Technology Co., Ltd.](https://appshunter.io/developer/1152993269) |

## What reviewers say

### NDSK520A

[App page](https://appshunter.io/ios/app/ndsk520a/id6474648710)

**In-app purchases:** none


### A500/A600S DSP

[App page](https://appshunter.io/ios/app/a500a600s-dsp/id6504397221)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NDSK520A free?

NDSK520A is free to download, with no in-app purchases.

### Is A500/A600S DSP free?

A500/A600S DSP is free to download, with no in-app purchases.

---

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