# EDC Acoustics Rapid vs On

The clearest difference is price: On at Free against EDC Acoustics Rapid's $35.99. On also leads on update cadence (every 3 weeks vs every 2 months). EDC Acoustics Rapid's advantage is in-app purchases (none vs 2) and iOS requirement (15.0 vs 17). On ads and device support there is nothing between them.

On is free to download; EDC Acoustics Rapid costs $35.99 up front. On sells 2 one-off in-app purchases. EDC Acoustics Rapid asks for nothing beyond the download.

EDC Acoustics Rapid ships an update every 2 months, On every 3 weeks. The most recent releases landed on September 22, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | EDC Acoustics Rapid | On |
| --- | --- | --- |
| Price | $35.99 | **Free** |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/on-axis/id6446842774/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 122 MB | 20 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EDC Acoustics](https://appshunter.io/developer/1490519511) | [OK-Sound](https://appshunter.io/developer/1679335942) |

## What reviewers say

### EDC Acoustics Rapid

[App page](https://appshunter.io/ios/app/edc-acoustics-rapid/id6444543668)

Configure and tune EDC Acoustics speaker arrays with ease. Input room dimensions for perfect setup or utilize live FIR automatic tuning. This streamlined version offers essential features for audio system optimization.

**Highlights:** Preset recalls, Speaker array configuration, Room dimension input, Live FIR automatic tuning, Automatic dispersion limiting

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

**In-app purchases:** none


### On

[App page](https://appshunter.io/ios/app/on-axis/id6446842774)

This utility app helps audio professionals quickly measure and model audience areas for event and touring setups. It offers a streamlined workflow compatible with popular loudspeaker simulation programs, speeding up the design process. Users can create 3D models of listening areas and generate profiles along speaker axes.

**Highlights:** Audience area measurement, 3D listening area modeling, Speaker axis profiling, Bluetooth laser distance finder integration, Export to loudspeaker simulation software, 14-day free trial

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 14-day Trial | Free | one-time |
| Unlock App | $149.99 | one-time |


## Frequently asked questions

### Is EDC Acoustics Rapid free?

EDC Acoustics Rapid costs $35.99, with no in-app purchases.

### Is On free?

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

### Do EDC Acoustics Rapid or On have ads?

Neither EDC Acoustics Rapid nor On shows ads.

### Which is updated more often, EDC Acoustics Rapid or On?

EDC Acoustics Rapid ships an update every 2 months, and On every 3 weeks. Most recently, EDC Acoustics Rapid was updated on September 22, 2026 and On on October 7, 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.*