Zeitmaschine vs isxynth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zeitmaschine
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Zeitmaschine is an audio engineering calculator with 4 different modes to compute tempo and distance related delay times, convert time related values and to calculate file sizes. DELAY TIME MODE Zeitmaschine is a delay time calculator with all divisors and multipliers relative to the time measurement you have done. Calculate delay times in milliseconds (ms) and beats per minute (bpm). Set the desired tempo via the tab-button, or write it down in ms/bpm, all options will be computed and a huge amount of 21 matched delay times will shown up at once, including dotted and triplet values. Take these determined times and put it to the delay time display of your effect or sound device, use it to set the right attack and release times of your dynamics (compressor/gate) or set the perfect pre delay time of your reverbs in addiction to the song tempo. Works with virtual-, 19“-, or stage devices (display needed). Zeitmaschine is a pretty quick app, brilliant for live engineering, where you can choose the perfect delay time in seconds, without scrolling the knobs of your FX-device back and forth. On the other hand you got an ultimate overview of alternative delay times, that´s great for doing experiments while mixing a track in a recording studio or in your DAW. You can use it on drums, vocals, guitars, ….you name it, and give them a complete new rhythmical structure. CONVERTER MODE Convert beats per minute to milliseconds, samples & hertz, depending on the audio sample rate. FILESIZE MODE Set the duration, bit depth, sample rate and channel number and get the filesize information for uncompressed files. Add the kbps rate to get the filesize for compressed files. DELAY LINE MODE Set the distance to main P.A. in meter or feet, add the temperature in Celsius or Fahrenheit and get the right delay times to delay the main P.A. to the backline and the line P.A. to the main P.A.
isxynth
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.
- 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
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isxysnth is spectral cross synthesis / morphing plugin it gets two input signals, splits each one into 2 parts containing noise and tone components and then allows morphing between all these elements. Freeze control allows spectral blurring-like effect for both input signals, two 3 second delay lines allow selection of different signal in time and also provide "freeze" effect you can process left and right channels on stereo source or use this effect as multi-input AUv3 - in that case it will use 2 stereo inputs. Standalone mode currently works only in "mono" mode - three XY controls set balance between tone and noise components, amount of freeze and set up morphing - both inputs have 3-second delay line; freeze button ("*") toggles off recording. - gestures on all the main controls (3 xy pads and two sliders) can be recorded and played back when appropriate button with ">" label is toggled on - in current version standalone app supports only mono (L + R as inputs I and II) processing
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Zeitmaschine | isxynth |
|---|---|---|
| Price | $3.99 — better | $7.99 |
| Rating | — | 3.7 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 7 months — better | Every 34 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 152 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Grohe & Giannakakis Applications GbR | Alexey Nadzharov |
In-app purchases
Zeitmaschine
No in-app purchases
isxynth
No in-app purchases









