# RAUSI vs 1981 FM

The clearest difference is device support: 1981 FM at 4 against RAUSI's 2. On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. RAUSI sells 1 one-off in-app purchase and 1981 FM sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | RAUSI | 1981 FM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/1981-fm-80s-track-generator/id6805325447/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 15 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Shoma Kondo](https://appshunter.io/developer/1884832972) | [Soft Brew Mobile](https://appshunter.io/developer/561703410) |

## What reviewers say

### RAUSI

[App page](https://appshunter.io/ios/app/rausi/id6794768446)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RAUSI Full Version | $6.99 | one-time |


### 1981 FM

[App page](https://appshunter.io/ios/app/1981-fm-80s-track-generator/id6805325447)

This app generates complete, unique musical tracks using chaotic mathematical principles. It offers various styles, modes, and keys, with customizable FM synth sounds and effects. Tracks can be recreated using seeds and exported via MIDI.

**Highlights:** Chaos-driven track generation, Four-operator FM synth engine, Multiple musical styles and modes, MIDI export and input, Customizable effects (chorus, delay, reverb), Offline functionality

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AUv3 Unlock | $2.99 | one-time |


## Frequently asked questions

### Is RAUSI free?

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

### Is 1981 FM free?

1981 FM is free to download, with in-app purchases available.

### Do RAUSI or 1981 FM have ads?

Neither RAUSI nor 1981 FM shows ads.

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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.*