# Lorentz vs OB

The clearest difference is review sentiment: Lorentz at 90% against OB's 57%. Lorentz also leads on rating (4.8 vs 4.3) and price ($8.00 vs $14.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Lorentz costs $8.00 and OB $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Lorentz holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 24 and 64 respectively. Written reviews point the same way: 90% of Lorentz's written reviews are positive against 57% of OB's.

Lorentz ships an update monthly, OB every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Lorentz | OB |
| --- | --- | --- |
| Price | **$8.00** | $14.99 |
| Rating | **[4.8 (24 ratings)](https://appshunter.io/ios/app/lorentz-auv3-plug-in-synth/id1016055431/reviews)** | [4.3 (64 ratings)](https://appshunter.io/ios/app/ob-xd-auv3-synth/id1465262829/reviews) |
| Number of ratings | 24 | **64** |
| Positive reviews | **90.3% of reviews** | 57.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 7 MB | 25 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iceWorks, Inc.](https://appshunter.io/developer/347507439) | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) |

## What reviewers say

### Lorentz

[App page](https://appshunter.io/ios/app/lorentz-auv3-plug-in-synth/id1016055431)

This app offers an analog-style synthesizer with a unique resonator for experimental sound design. Explore a wide range of sonic possibilities with familiar analog tones and innovative resonator effects.

**Highlights:** AUv3 compatibility, Analog-style synthesis, Integrated resonator, Experimental sound creation, Wide sound design possibilities

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

**In-app purchases:** none


### OB

[App page](https://appshunter.io/ios/app/ob-xd-auv3-synth/id1465262829)

This app emulates the classic Oberheim OB-X synthesizer, offering its rich sound and behavior with added enhancements. It focuses on sonic quality and includes micro random detuning for authentic analog warmth. External effects are recommended to further shape its versatile soundscapes.

**Highlights:** Oberheim OB-X emulation, Recreates original sound and behavior, Added enhancements to original design, Micro random detuning, Rich and good sound quality

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🎶 Incredible sound quality
- ✨ Inspiring creative tool
- 🎹 Faithful emulation of classic synth
- 🎛️ Great for programming
- 🎚️ Useful presets

**What reviewers complain about**

- 🐛 Unusable UI on older devices
- 💻 Poor GUI scaling on iPad Pro
- 🎛️ Controls unresponsive or misaligned
- 📉 Limited functionality without updates
- 🤷‍♂️ No clear upgrade path

**Reported bugs**

- Crashes in Audiobus
- Cannot use in MIDI section of Audiobus
- Preset browser issues (scrolling, cut off banks)
- Automation bug with cutoff freq
- UI issues on iPad Pro (buttons misaligned, text cut off)

**Requested features**

- Add last/high priority for mono patches
- Increase polyphony to 8 voices
- MIDI Learn functionality
- Preset browser improvements (categories, scrolling)
- Adjustable keyboard size


## Frequently asked questions

### Is Lorentz free?

Lorentz costs $8.00, with no in-app purchases.

### Is OB free?

OB costs $14.99, with no in-app purchases.

### Which has better reviews, Lorentz or OB?

Lorentz is rated higher. Lorentz averages 4.8 out of 5 from 24 ratings, while OB averages 4.3 from 64 ratings.

### Do Lorentz or OB have ads?

Neither Lorentz nor OB shows ads.

### Which is updated more often, Lorentz or OB?

Lorentz ships an update monthly, and OB every 2 months. Most recently, Lorentz was updated on November 1, 2026 and OB on November 3, 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.*