# Sonic Synth vs ab vortEx X

The clearest difference is review sentiment: ab vortEx X at 88% against Sonic Synth's 0%. ab vortEx X also leads on rating (4.6 vs 3.0) and update cadence (every 2 months vs every 6 months). Sonic Synth's advantage is price ($1.99 vs $12.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Sonic Synth costs $1.99 and ab vortEx X $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ab vortEx X holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: ab vortEx X has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Sonic Synth's written reviews are positive against 88% of ab vortEx X's.

Sonic Synth ships an update every 6 months, ab vortEx X every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Sonic Synth | ab vortEx X |
| --- | --- | --- |
| Price | **$1.99** | $12.99 |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/sonic-synth-fm-synthesizer/id1104940736/reviews) | **[4.6 (8 ratings)](https://appshunter.io/ios/app/ab-vortex-x/id1660941137/reviews)** |
| Number of ratings | 1 | **8** |
| Positive reviews | 0.0% of reviews | **87.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 7 MB |
| Requires iOS | 13.0 | **11** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) | [Alejandro Cabrera Zuniga](https://appshunter.io/developer/1660382836) |

## What reviewers say

### Sonic Synth

[App page](https://appshunter.io/ios/app/sonic-synth-fm-synthesizer/id1104940736)

Create a wide variety of sounds with this FM synthesizer app. It features three independent oscillators, each capable of generating four unique waveforms, and offers a responsive touch keyboard for real-time performance. Enjoy high-quality audio with a 44100 Hz sample rate.

**Highlights:** 3 independent oscillators, 4 waveform types per oscillator, Volume, modulation, tone, and detune controls, Envelope filters (attack, sustain, release), Multitouch support, Responsive piano keyboard, Core MIDI support

**Features:** Vision Pro support

**In-app purchases:** none


### ab vortEx X

[App page](https://appshunter.io/ios/app/ab-vortex-x/id1660941137)

This app is a stereo-only abstract spacetime designer for creating unique reverberations. It functions as an AUv3 plugin for compatible iOS hosts or as a standalone application, offering control over sound reflection spread.

**Highlights:** Stereo-only spatial audio algorithms, AUv3 plugin compatibility, Standalone application mode, Touch screen interface, Control over sound reflection spread, Space, Time, Viscosity, Volumes controls

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sonic Synth free?

Sonic Synth costs $1.99, with no in-app purchases.

### Is ab vortEx X free?

ab vortEx X costs $12.99, with no in-app purchases.

### Which has better reviews, Sonic Synth or ab vortEx X?

ab vortEx X is rated higher. Sonic Synth averages 3.0 out of 5 from 1 ratings, while ab vortEx X averages 4.6 from 8 ratings.

### Do Sonic Synth or ab vortEx X have ads?

Neither Sonic Synth nor ab vortEx X shows ads.

### Which is updated more often, Sonic Synth or ab vortEx X?

Sonic Synth ships an update every 6 months, and ab vortEx X every 2 months. Most recently, Sonic Synth was updated on October 24, 2026 and ab vortEx X on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*