# Dexed Synth vs OB

The clearest difference is review sentiment: OB at 75% against Dexed Synth's 29%. OB also leads on rating (4.1 vs 3.1) and update cadence (every 10 days vs every 2 months). Dexed Synth's advantage is price ($3.99 vs $19.99) and chart position (#184 vs unranked). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Dexed Synth costs $3.99 and OB $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

OB holds the better App Store score, 4.1 against 3.1. Both are backed by a comparable volume of ratings — 43 and 15 respectively. Written reviews point the same way: 29% of Dexed Synth's written reviews are positive against 75% of OB's.

Dexed Synth ships an update every 2 months, OB every 10 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Dexed Synth | OB |
| --- | --- | --- |
| Price | **$3.99** | $19.99 |
| Rating | [3.1 (43 ratings)](https://appshunter.io/ios/app/dexed-synth/id1462551596/reviews) | **[4.1 (15 ratings)](https://appshunter.io/ios/app/ob-xd-3-auv3-synth/id6654915211/reviews)** |
| Number of ratings | **43** | 15 |
| Positive reviews | 28.8% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | **Free** | Paid |
| Best chart rank | **#184** | — |
| Size | 105 MB | 210 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [George Rosar](https://appshunter.io/developer/1462550889) | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) |

## What reviewers say

### Dexed Synth

[App page](https://appshunter.io/ios/app/dexed-synth/id1462551596)

**Currently charting:** #184 Top Paid · Music (US App Store)

This app brings a powerful FM synthesizer to your mobile device, offering a vast library of sounds. It integrates with popular DAWs and supports external MIDI controllers for enhanced control and performance.

**Highlights:** FM Synthesizer port, Over 20,000 cartridges with 32 patches each, AudioUnit AUv3 plugin support, MIDI controller input via USB, Lock scroll and parameter locking, MIDI CC mapping

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Dexed Synth free?

Dexed Synth costs $3.99, with no in-app purchases.

### Is OB free?

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

### Which has better reviews, Dexed Synth or OB?

OB is rated higher. Dexed Synth averages 3.1 out of 5 from 43 ratings, while OB averages 4.1 from 15 ratings.

### Do Dexed Synth or OB have ads?

Neither Dexed Synth nor OB shows ads.

### Which is updated more often, Dexed Synth or OB?

Dexed Synth ships an update every 2 months, and OB every 10 days. Most recently, Dexed Synth was updated on October 26, 2026 and OB on October 24, 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.*