# SD vs On

The clearest difference is rating: On at 5.0 against SD's 3.7. On also leads on update cadence (every 3 weeks vs every 2 months). SD's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 17). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. On sells 2 one-off in-app purchases. SD asks for nothing beyond the download.

On holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 9 and 6 respectively.

SD ships an update every 2 months, On every 3 weeks. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SD | On |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (9 ratings)](https://appshunter.io/ios/app/sd-remote/id1487546591/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/on-axis/id6446842774/reviews)** |
| Number of ratings | **9** | 6 |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 55 MB | 20 MB |
| Requires iOS | **12.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sound Devices, LLC](https://appshunter.io/developer/418450388) | [OK-Sound](https://appshunter.io/developer/1679335942) |

## What reviewers say

### SD

[App page](https://appshunter.io/ios/app/sd-remote/id1487546591)

Control your Sound Devices 8-Series mixer-recorder remotely from your iPad or iPhone. Manage transport, edit metadata, take notes, monitor outputs, and adjust channel settings like faders, trims, and pan. View large-scale meters and timecode on all screens.

**Highlights:** Remote transport controls, Metadata editing, Take notes, Monitor outputs, Adjust faders, trims, and pan, Channel arming, disarming, solo, and mute, Large-scale channel meters, Timecode display

**Features:** macOS Compatibility

**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 SD free?

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

### Is On free?

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

### Which has better reviews, SD or On?

On is rated higher. SD averages 3.7 out of 5 from 9 ratings, while On averages 5.0 from 6 ratings.

### Do SD or On have ads?

Neither SD nor On shows ads.

### Which is updated more often, SD or On?

SD ships an update every 2 months, and On every 3 weeks. Most recently, SD was updated on October 1, 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.*