# FAC Phazer vs isxynth

The clearest difference is rating: FAC Phazer at 5.0 against isxynth's 3.7. FAC Phazer also leads on update cadence (every 4 months vs every 34 months) and ratings volume (30 vs 3). isxynth's advantage is in-app purchases (none vs 3) and review sentiment (100% vs 83%). On ads, monetization model and device support there is nothing between them.

FAC Phazer costs $9.99 and isxynth $7.99 up front. FAC Phazer sells 3 one-off in-app purchases. isxynth asks for nothing beyond the download.

FAC Phazer holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: FAC Phazer has 30 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 83% of FAC Phazer's written reviews are positive against 100% of isxynth's, so the app with the better star average is not the one people write more warmly about.

FAC Phazer ships an update every 4 months, isxynth every 34 months. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | FAC Phazer | isxynth |
| --- | --- | --- |
| Price | $9.99 | **$7.99** |
| Rating | **[5.0 (30 ratings)](https://appshunter.io/ios/app/fac-phazer/id1507540450/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/isxynth/id6450951503/reviews) |
| Number of ratings | **30** | 3 |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 34 months |
| Monetization | Paid | Paid |
| Size | 3 MB | 8 MB |
| Requires iOS | 16.4 | **11.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Frederic Corvest](https://appshunter.io/developer/1230164765) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## What reviewers say

### FAC Phazer

[App page](https://appshunter.io/ios/app/fac-phazer/id1507540450)

This music effect plugin offers a rich sonic palette inspired by classic guitar pedals and hardware synthesizers. It provides extensive control over phasing effects with adjustable LFOs, unique characters, and versatile modulation options for all instruments and genres.

**Highlights:** Inspired by classic phaser units, Adjustable LFO with tempo sync, Four unique sonic characters, External modulation and Step mode, Stereo phase modulation, Universal AUv3 purchase

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $14.99 | one-time |


### isxynth

[App page](https://appshunter.io/ios/app/isxynth/id6450951503)

This music effect plugin allows spectral cross synthesis and morphing between two input signals. It separates noise and tone components, offering controls for blending, freezing, and time-based delays. Gestures on controls can be recorded and played back for dynamic sound shaping.

**Highlights:** Spectral cross synthesis, Morphing between two input signals, Noise and tone component blending, Freeze control for spectral blurring, 3-second delay lines per input, Gesture recording and playback

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

**In-app purchases:** none


## Frequently asked questions

### Is FAC Phazer free?

FAC Phazer costs $9.99, and also offers in-app purchases.

### Is isxynth free?

isxynth costs $7.99, with no in-app purchases.

### Which has better reviews, FAC Phazer or isxynth?

FAC Phazer is rated higher. FAC Phazer averages 5.0 out of 5 from 30 ratings, while isxynth averages 3.7 from 3 ratings.

### Do FAC Phazer or isxynth have ads?

Neither FAC Phazer nor isxynth shows ads.

### Which is updated more often, FAC Phazer or isxynth?

FAC Phazer ships an update every 4 months, and isxynth every 34 months. Most recently, FAC Phazer was updated on September 22, 2026 and isxynth on September 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.*