# AST Catalog vs FlatAudio

The clearest difference is review sentiment: FlatAudio at 74% against AST Catalog's 38%. FlatAudio also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.0 vs 17). On price, ads, in-app purchases and monetization model there is nothing between them.

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

AST Catalog ships an update every 2 months, FlatAudio every 2 weeks. The most recent releases landed on September 21, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | AST Catalog | FlatAudio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (5 ratings)](https://appshunter.io/ios/app/ast-catalog/id1579473232/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 38.1% of reviews | **74.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 52 MB | 73 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 9+ |
| Developer | [ART SYSTEM, LLC](https://appshunter.io/developer/1524307772) | [PLOSKOSTI ZVUKA, OOO](https://appshunter.io/developer/1595612204) |

## What reviewers say

### AST Catalog

[App page](https://appshunter.io/ios/app/ast-catalog/id1579473232)

This app provides an electronic catalog of songs for AST karaoke systems. It allows users to search for songs by various criteria, filter results, and create favorite song lists. Users can also listen to original song versions.

**Highlights:** Illustrated artist catalog, Search by number, title, artist, lyrics, Filter by language, format, genre, Instant access to favorite genres, Create and sync favorite song lists, Listen to original song versions

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

**In-app purchases:** none


### FlatAudio

[App page](https://appshunter.io/ios/app/flataudio/id1595612202)

Discover and enjoy electronic music across various genres. Find parties, follow artists, manage event tickets, and curate your personal music library with online and offline listening options.

**Highlights:** Electronic music streaming, Party discovery and map, Artist following, Event ticket purchasing, Invitation management, Personal media library

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

**In-app purchases:** none


## Frequently asked questions

### Is AST Catalog free?

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

### Is FlatAudio free?

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

### Do AST Catalog or FlatAudio have ads?

Neither AST Catalog nor FlatAudio shows ads.

### Which is updated more often, AST Catalog or FlatAudio?

AST Catalog ships an update every 2 months, and FlatAudio every 2 weeks. Most recently, AST Catalog was updated on September 21, 2026 and FlatAudio on September 25, 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.*