# OB vs HxMIDI Tools

The clearest difference is review sentiment: OB at 75% against HxMIDI Tools's 0%. OB also leads on ratings volume (15 vs 4). HxMIDI Tools's advantage is price (Free vs $19.99) and rating (4.5 vs 4.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

HxMIDI Tools is free to download; OB costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HxMIDI Tools holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 15 and 4 respectively. Written reviews complicate that: 75% of OB's written reviews are positive against 0% of HxMIDI Tools's, so the app with the better star average is not the one people write more warmly about.

OB ships an update every 10 days, HxMIDI Tools every 2 weeks. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | OB | HxMIDI Tools |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | [4.1 (15 ratings)](https://appshunter.io/ios/app/ob-xd-3-auv3-synth/id6654915211/reviews) | **[4.5 (4 ratings)](https://appshunter.io/ios/app/hxmidi-tools/id6737767548/reviews)** |
| Number of ratings | **15** | 4 |
| Positive reviews | **75.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | Paid | **Free** |
| Size | 210 MB | 6 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) | [CME PTE. LTD.](https://appshunter.io/developer/833376644) |

## What reviewers say

### OB

[App page](https://appshunter.io/ios/app/ob-xd-3-auv3-synth/id6654915211)

This app recreates a classic vintage synthesizer, offering rich, full-bodied tones for electronic music, recordings, and film scores. It features MPE support, an on-screen MIDI keyboard, and high-quality rendering for enhanced music production.

**Highlights:** Oberheim OB-X emulation, MPE support, On-screen MIDI keyboard, High-quality retina rendering, AUv3 improvements, Preset search with categories

**Features:** macOS Compatibility

**In-app purchases:** none


### HxMIDI Tools

[App page](https://appshunter.io/ios/app/hxmidi-tools/id6737767548)

This software allows owners of CME USB MIDI Host products to update firmware and fully configure their devices. Users can manage routing, mapping, and filtering of MIDI and USB inputs and outputs.

**Highlights:** Firmware updates for CME USB MIDI Hosts, Configure routing between MIDI and USB inputs/outputs, Filter incoming MIDI events, Map incoming MIDI events to others, Full product configuration

**In-app purchases:** none


## Frequently asked questions

### Is OB free?

OB costs $19.99, with no in-app purchases.

### Is HxMIDI Tools free?

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

### Which has better reviews, OB or HxMIDI Tools?

HxMIDI Tools is rated higher. OB averages 4.1 out of 5 from 15 ratings, while HxMIDI Tools averages 4.5 from 4 ratings.

### Do OB or HxMIDI Tools have ads?

Neither OB nor HxMIDI Tools shows ads.

### Which is updated more often, OB or HxMIDI Tools?

OB ships an update every 10 days, and HxMIDI Tools every 2 weeks. Most recently, OB was updated on October 30, 2026 and HxMIDI Tools 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.*