# NSYS Buy Back vs Wave

The clearest difference is iOS requirement: NSYS Buy Back at 12.0 against Wave's 26.0. On price, update cadence, ads 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NSYS Buy Back | Wave |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 23 MB | 11 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Grigoriy Glazman](https://appshunter.io/developer/1448501053) | [David Zurcher](https://appshunter.io/developer/1878033112) |

## What reviewers say

### NSYS Buy Back

[App page](https://appshunter.io/ios/app/nsys-buy-back/id1545431029)

**Features:** macOS Compatibility

**In-app purchases:** none


### Wave

[App page](https://appshunter.io/ios/app/wave-usb-player/id6759682980)

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

**In-app purchases:** none


## Frequently asked questions

### Is NSYS Buy Back free?

NSYS Buy Back is free to download, with no in-app purchases.

### Is Wave free?

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

### Do NSYS Buy Back or Wave have ads?

Neither NSYS Buy Back nor Wave shows ads.

### Which is updated more often, NSYS Buy Back or Wave?

NSYS Buy Back ships an update every 2 months, and Wave every 2 months. Most recently, NSYS Buy Back was updated on October 16, 2026 and Wave on October 24, 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.*