# Otoo vs NebulizerAU

The clearest difference is price: NebulizerAU at Free against Otoo's $6.99. NebulizerAU also leads on update cadence (daily vs every 6 days). Otoo's advantage is ratings volume (30 vs 4). On rating, ads, in-app purchases and device support there is nothing between them.

NebulizerAU is free to download; Otoo costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Otoo against 5.0 for NebulizerAU. That said, the two scores are not equally well evidenced: Otoo has 30 ratings behind it against 4, so its average is the more settled of the two.

Otoo ships an update every 6 days, NebulizerAU daily. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Otoo | NebulizerAU |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [5.0 (30 ratings)](https://appshunter.io/ios/app/otoo/id6759285903/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/nebulizerau/id6760477018/reviews) |
| Number of ratings | **30** | 4 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Daily** |
| Monetization | Paid | **Free** |
| Size | 64 MB | 2 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BeepStreet](https://appshunter.io/developer/321412321) | [Matthew Caldwell](https://appshunter.io/developer/993500585) |

## What reviewers say

### Otoo

[App page](https://appshunter.io/ios/app/otoo/id6759285903)

This music creation app offers a unique free-form sequencer for building beats and melodies. It supports built-in sounds, sampling, and AUv3 instruments, with live performance effects and song arrangement tools.

**Highlights:** Free-form step sequencer, Single-screen workflow, Built-in sounds and sampler, AUv3 instrument support, Performance Mode effects, Export WAV, MP3, and MIDI

**Features:** macOS Compatibility

**In-app purchases:** none


### NebulizerAU

[App page](https://appshunter.io/ios/app/nebulizerau/id6760477018)

This audio effect plugin emulates the sound of an old-school, warbly tape delay. It functions as an AUv3 effect, allowing it to be used on multiple tracks within various audio applications. It delivers a distinct lo-fi sound.

**Highlights:** AUv3 effect plugin, Tape delay emulation, Lo-fi sound character, Stackable on multiple tracks, Compatible with GarageBand, AUM

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Otoo free?

Otoo costs $6.99, with no in-app purchases.

### Is NebulizerAU free?

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

### Which has better reviews, Otoo or NebulizerAU?

Otoo and NebulizerAU are both rated 5.0 out of 5 on the App Store, from 30 and 4 ratings respectively.

### Do Otoo or NebulizerAU have ads?

Neither Otoo nor NebulizerAU shows ads.

### Which is updated more often, Otoo or NebulizerAU?

Otoo ships an update every 6 days, and NebulizerAU daily. Most recently, Otoo was updated on October 25, 2026 and NebulizerAU 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.*