# On vs Stage Builder X

The clearest difference is price: On at Free against Stage Builder X's $19.99. Stage Builder X's advantage is in-app purchases (none vs 2) and iOS requirement (15.1 vs 17). On update cadence, ads and device support there is nothing between them.

On is free to download; Stage Builder X costs $19.99 up front. On sells 2 one-off in-app purchases. Stage Builder X asks for nothing beyond the download.

On ships an update every 3 weeks, Stage Builder X every 11 days. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | On | Stage Builder X |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/on-axis/id6446842774/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 36 MB |
| Requires iOS | 17 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [OK-Sound](https://appshunter.io/developer/1679335942) | [STURE MOSLAATTEN](https://appshunter.io/developer/1881018997) |

## What reviewers say

### 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 |


### Stage Builder X

[App page](https://appshunter.io/ios/app/stage-builder-x/id6759829164)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is On free?

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

### Is Stage Builder X free?

Stage Builder X costs $19.99, with no in-app purchases.

### Do On or Stage Builder X have ads?

Neither On nor Stage Builder X shows ads.

### Which is updated more often, On or Stage Builder X?

On ships an update every 3 weeks, and Stage Builder X every 11 days. Most recently, On was updated on November 3, 2026 and Stage Builder X on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*