# Zeitmaschine vs isxynth

The clearest difference is update cadence: Zeitmaschine at every 7 months against isxynth's every 34 months. Zeitmaschine also leads on price ($3.99 vs $7.99). isxynth's advantage is iOS requirement (11.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Zeitmaschine costs $3.99 and isxynth $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Zeitmaschine ships an update every 7 months, isxynth every 34 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Zeitmaschine | isxynth |
| --- | --- | --- |
| Price | **$3.99** | $7.99 |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/isxynth/id6450951503/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 34 months |
| Monetization | — | Paid |
| Size | 152 MB | 8 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Grohe & Giannakakis Applications GbR](https://appshunter.io/developer/1185329512) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## What reviewers say

### Zeitmaschine

[App page](https://appshunter.io/ios/app/zeitmaschine/id1185329513)

**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 Zeitmaschine free?

Zeitmaschine costs $3.99, with no in-app purchases.

### Is isxynth free?

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

### Do Zeitmaschine or isxynth have ads?

Neither Zeitmaschine nor isxynth shows ads.

### Which is updated more often, Zeitmaschine or isxynth?

Zeitmaschine ships an update every 7 months, and isxynth every 34 months. Most recently, Zeitmaschine was updated on October 29, 2026 and isxynth on October 30, 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.*