# Classic FX vs isxynth

The clearest difference is rating: Classic FX at 4.6 against isxynth's 3.7. Classic FX also leads on update cadence (every 2 months vs every 34 months) and ratings volume (22 vs 3). isxynth's advantage is price ($7.99 vs $12.99) and review sentiment (100% vs 87%). On ads, in-app purchases, monetization model and device support there is nothing between them.

Classic FX costs $12.99 and isxynth $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Classic FX holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Classic FX has 22 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 87% of Classic FX'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.

Classic FX ships an update every 2 months, isxynth every 34 months. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Classic FX | isxynth |
| --- | --- | --- |
| Price | $12.99 | **$7.99** |
| Rating | **[4.6 (22 ratings)](https://appshunter.io/ios/app/classic-fx/id1471754938/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/isxynth/id6450951503/reviews) |
| Number of ratings | **22** | 3 |
| Positive reviews | 86.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 34 months |
| Monetization | Paid | Paid |
| Size | 12 MB | 8 MB |
| Requires iOS | 13.4 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Igor Vasiliev](https://appshunter.io/developer/424401626) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## What reviewers say

### Classic FX

[App page](https://appshunter.io/ios/app/classic-fx/id1471754938)

Enhance audio with a comprehensive sound effects processor. It offers equalization, reverb, and unique morphing capabilities to add brightness and expand soundscapes for instruments, vocals, and drums. Experiment with diverse effects and dynamic transitions for creative sound design.

**Highlights:** 22 unique processing algorithms, 40 diverse presets, Morphing between effect slots, Three-band equalizer, Algorithmic reverb, Envelope follower, Sequencer for rhythmic control

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Classic FX free?

Classic FX costs $12.99, with no in-app purchases.

### Is isxynth free?

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

### Which has better reviews, Classic FX or isxynth?

Classic FX is rated higher. Classic FX averages 4.6 out of 5 from 22 ratings, while isxynth averages 3.7 from 3 ratings.

### Do Classic FX or isxynth have ads?

Neither Classic FX nor isxynth shows ads.

### Which is updated more often, Classic FX or isxynth?

Classic FX ships an update every 2 months, and isxynth every 34 months. Most recently, Classic FX was updated on October 9, 2026 and isxynth on October 2, 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.*