# Not YYZ vs Song Sift

The clearest difference is price: Song Sift at Free against Not YYZ's $0.99. Song Sift also leads on update cadence (every 2 months vs every 3 months) and review sentiment (100% vs 90%). Not YYZ's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.0). On ads and device support there is nothing between them.

Song Sift is free to download; Not YYZ costs $0.99 up front. Song Sift sells 2 in-app purchases, starting at $2.99 per month. Not YYZ asks for nothing beyond the download.

Not YYZ ships an update every 3 months, Song Sift every 2 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Not YYZ | Song Sift |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/not-yyz/id427534033/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 90.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Paid | **Freemium** |
| Size | 15 MB | 85 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dr. Tae](https://appshunter.io/developer/427534036) | [Studio Sol Comunicacao Digital LTDA](https://appshunter.io/developer/480625284) |

## What reviewers say

### Not YYZ

[App page](https://appshunter.io/ios/app/not-yyz/id427534033)

Explore alternate musical interpretations of a famous instrumental song by a legendary rock band. Input any three letters to hear a unique rendition and discover associated airport information.

**Highlights:** Customizable song generation, Airport database search, Morse code rhythm guide, Random letter generator, Airport name and location display

**Features:** Vision Pro support

**In-app purchases:** none


### Song Sift

[App page](https://appshunter.io/ios/app/song-sift-stem-splitter/id6741689757)

This app uses advanced AI to separate vocals and instruments from any song, allowing you to create custom mixes. Easily adjust stem volumes, mute parts, or use presets for karaoke and backing tracks. Organize and download your creations in high quality.

**Highlights:** Automatic vocal and instrument separation, Customizable mixes with stem control, Preset mixes for quick creation, High-quality audio exports, Personal music library

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Song Sift Pro | $2.99 | per month |
| Song Sift Pro | $29.99 | per year |


## Frequently asked questions

### Is Not YYZ free?

Not YYZ costs $0.99, with no in-app purchases.

### Is Song Sift free?

Song Sift is free to download, with in-app purchases available.

### Do Not YYZ or Song Sift have ads?

Neither Not YYZ nor Song Sift shows ads.

### Which is updated more often, Not YYZ or Song Sift?

Not YYZ ships an update every 3 months, and Song Sift every 2 months. Most recently, Not YYZ was updated on November 1, 2026 and Song Sift on November 4, 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.*