# Black Audio Tool vs OpenBioMaps Forms

The clearest difference is price: OpenBioMaps Forms at Free against Black Audio Tool's $1.99. OpenBioMaps Forms also leads on update cadence (weekly vs every 24 months). Black Audio Tool's advantage is iOS requirement (15.6 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

OpenBioMaps Forms is free to download; Black Audio Tool costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Black Audio Tool ships an update every 24 months, OpenBioMaps Forms weekly. The most recent releases landed on August 24, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Black Audio Tool | OpenBioMaps Forms |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/black-audio-tool-bat/id6476655926/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Weekly** |
| Monetization | Paid | — |
| Size | 1 MB | 45 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Philippe Zay](https://appshunter.io/developer/1200498230) | [ECOLLAB](https://appshunter.io/developer/1777494456) |

## What reviewers say

### Black Audio Tool

[App page](https://appshunter.io/ios/app/black-audio-tool-bat/id6476655926)

This app is a versatile sound generation tool for exploring audio. It allows users to create and control a wide range of sounds, from classic waveforms to various noise colors, with built-in effects for further shaping. Designed for audiophiles, sound designers, and musicians, it offers precise real-time control for creative experimentation.

**Highlights:** Precise waveform generation, Multiple noise colors, Built-in reverb and distortion, Real-time parameter control, Infra sonic and ultra sonic modes, Audio recording to file

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

**In-app purchases:** none


### OpenBioMaps Forms

[App page](https://appshunter.io/ios/app/openbiomaps-forms/id6737706732)

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

**In-app purchases:** none


## Frequently asked questions

### Is Black Audio Tool free?

Black Audio Tool costs $1.99, with no in-app purchases.

### Is OpenBioMaps Forms free?

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

### Do Black Audio Tool or OpenBioMaps Forms have ads?

Neither Black Audio Tool nor OpenBioMaps Forms shows ads.

### Which is updated more often, Black Audio Tool or OpenBioMaps Forms?

Black Audio Tool ships an update every 24 months, and OpenBioMaps Forms weekly. Most recently, Black Audio Tool was updated on August 24, 2026 and OpenBioMaps Forms on September 12, 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.*