# On vs Seymour Events

On and Seymour Events are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. On sells 2 one-off in-app purchases and Seymour Events sells 4 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

On ships an update every 3 weeks, Seymour Events every 5 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | On | Seymour Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/on-axis/id6446842774/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 4 MB |
| Requires iOS | 17 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OK-Sound](https://appshunter.io/developer/1679335942) | [Gregory Mena](https://appshunter.io/developer/1756222078) |

## 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 |


### Seymour Events

[App page](https://appshunter.io/ios/app/seymour-events/id6526466297)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Plan Monthly | $19.99 | per month |
| Pro Plan Monthly | $29.99 | per month |
| Standard Plan Annual | $149.00 | per year |
| Pro Plan Annual | $199.99 | per year |


## Frequently asked questions

### Is On free?

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

### Is Seymour Events free?

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

### Do On or Seymour Events have ads?

Neither On nor Seymour Events shows ads.

### Which is updated more often, On or Seymour Events?

On ships an update every 3 weeks, and Seymour Events every 5 weeks. Most recently, On was updated on November 3, 2026 and Seymour Events on November 4, 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.*